Statewide CATEGORY 5 Draft 2024 Integrated Report (CWA Section 303(d) List / 305(b) Report)
2024 CALIFORNIA 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS*
 
 REGION  WATER BODY NAME WATER TYPE WATERSHED*
CALWATER / USGS HUC
  • POLLUTANT
    • POTENTIAL SOURCES
  • Relevant Notes
ESTIMATED AREA ASSESSED FIRST YEAR LISTED TMDL REQUIREMENT STATUS**  DATE***

Region 1

Big River Beach at Mendocino Bay

Coastal & Bay Shoreline

1113.300405  /  18010108
  • Indicator Bacteria
    • A Source Unknown

0.82 Miles

2010

5A

2022


Region 1

Bodega HU, Bodega Harbor HA

Bay & Harbor

1115.100003,1115.210000,1115.220000,1115.300002  /  18010111
  • Invasive Species
    • A Source Unknown

1318 Acres

2006

5A

2025


Region 1

Bodega HU, Estero Americano HA, Americano Creek

River & Stream

1115.300001,1115.300002,1115.300003  /  18010111
  • Nutrients
    • A Source Unknown

38 Miles

1996

5A

2025


Region 1

Bodega HU, Estero Americano HA, estuary

Estuary

1115.300001,1115.300002  /  18010111
  • Nutrients
    • A Source Unknown

199 Acres

1996

5A

2025
  • Sedimentation/Siltation
    • A Source Unknown

199 Acres

1992

5A

2025


Region 1

Bodega HU, Estero de San Antonio HA, Stemple Creek/Estero de San Antonio

River & Stream

1115.400001,1115.400002,1115.400003  /  18010111
  • Nutrients
    • A Source Unknown

74 Miles

2026

5A

2025
  • Sediment
    • A Source Unknown

74 Miles

2006

5A

2025


Region 1

Campbell Cove

Coastal & Bay Shoreline

1115.210000,1115.220000  /  18010111
  • Indicator Bacteria
    • A Source Unknown

0.24 Miles

2006

5A

2022


Region 1

Caspar Headlands State Beach

Coastal & Bay Shoreline

1113.300404,1113.300405  /  18010108
  • Indicator Bacteria
    • A Source Unknown

0.19 Miles

2010

5A

2022


Region 1

Clam Beach (near Mad River mouth)

Coastal & Bay Shoreline

1109.100101  /  18010102
  • Indicator Bacteria
    • A Source Unknown

2.3 Miles

2012

5A

2022


Region 1

Clam Beach (near Strawberry Creek)

Coastal & Bay Shoreline

1108.200002,1109.100200,1109.100300  /  18010102
  • Indicator Bacteria
    • A Source Unknown

1.3 Miles

2006

5A

2022


Region 1

Copco Lake

Lake & Reservoir

1105.380201,1105.380202  /  18010206
  • Cyanobacteria hepatotoxic microcystins
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Grazing-Related Sources
    • Road Construction
    • Silviculture

977 Acres

2006

5B

2010
    This listing applies to the Copco 1 and Copco 2 Reservoirs.
  • Mercury
    • A Source Unknown

977 Acres

2010

5A

2025
    This listing applies to Copco 1 Reservoir.


Region 1

Dead Lake

Lake & Reservoir

1103.110003  /  18010101
  • Mercury
    • A Source Unknown

25 Acres

2012

5A

2025


Region 1

Eel River HU, Lower Eel River HA (includes the Eel River Delta)

River & Stream

1111.110101,1111.110102,1111.110103,1111.110201,1111.110202,1111.110203,1111.110301,1111.110302,1111.110303,1111.120101,(Total Count: 20)  /  18010105
  • Aluminum
    • A Source Unknown

642 Miles

2010

5A

2025
    This listing for aluminum only applies to the mainstem Eel River in the Lower Eel River HA.
  • Oxygen, Dissolved
    • A Source Unknown

642 Miles

2010

5A

2021
    This listing only applies to McNulty Slough, which lies within the Eel River HU, Lower Eel River HA (includes the Eel River Delta) water body.
  • Sedimentation/Siltation
    • A Source Unknown

642 Miles

1994

5B

2007
  • Temperature, water
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

642 Miles

1996

5B

2007
    This listing does not apply to McNulty Slough, which lies within the Eel River HU, Lower Eel River HA (includes the Eel River Delta) water body.


Region 1

Eel River HU, Middle Fork HA, Eden Valley and Round Valley HSAs

River & Stream

1111.620602,1111.710101,1111.710102,1111.710204,1111.710404,1111.710406,1111.720201,1111.720202,1111.720400,1111.740402  /  18010103
  • Aluminum
    • A Source Unknown

2706 Miles

2010

5A

2025
    This listing for aluminum only applies to the mainstem Middle Fork Eel River in the Eel River HU, Middle Fork HA, Eden Valley and Round Valley HSAs water body.
  • Sedimentation/Siltation
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

2706 Miles

1994

5B

2003
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Nonpoint Source
    • Removal of Riparian Vegetation

2706 Miles

1996

5B

2003


Region 1

Eel River HU, Middle Main HA

River & Stream

1111.320104,1111.410102,1111.410303,1111.410501,1111.420101,1111.420102,1111.420203,1111.420601,1111.420604,1111.500605  /  18010103
  • Aluminum
    • A Source Unknown

1588 Miles

2010

5A

2025
    This listing for aluminum only applies to the mainstem Eel River in the "Eel River HU, Middle Main HA".
  • Sedimentation/Siltation
    • A Source Unknown
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

1588 Miles

1994

5B

2005
  • Temperature, water
    • A Source Unknown

1588 Miles

1996

5B

2005
    This listing for temperature impairment only applies to the tributaries to the Middle Main Eel River (from Dos Rios to the South Fork).


Region 1

Eel River HU, North Fork HA, Lower North Fork Eel River Watershed

River & Stream

1111.420402,1111.500101,1111.500102,1111.500104,1111.500203,1111.500601,1111.500602,1111.500603,1111.500605,1111.500607  /  18010104
  • Aluminum
    • A Source Unknown

606 Miles

2010

5A

2031
    This listing only applies to the North Fork Eel River in the "Eel River HU, North Fork HA, Lower North Fork Eel River Watershed" waterbody.
  • Oxygen, Dissolved
    • A Source Unknown

606 Miles

2014

5A

2031
    This listing only applies to Asbill Creek in the "Eel River HU, North Fork HA, Lower North Fork Eel River Watershed" water body.
  • Sedimentation/Siltation
    • A Source Unknown

606 Miles

1994

5B

2002
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

606 Miles

1996

5B

2002
    The Lower North Fork Eel River Watershed is the area that drains into the North Fork Eel River south of the Six Rivers National Forest boundary with the River.
  • pH
    • A Source Unknown

606 Miles

2014

5A

2031
    This listing only applies to the North Fork Eel River within the Eel River HU, North Fork HA, Lower North Fork Eel River Watershed.


Region 1

Eel River HU, South Fork HA

River & Stream

1111.310202,1111.320101,1111.320102,1111.320103,1111.320201,1111.320203,1111.320301,1111.320302,1111.320806,1111.330102  /  18010108
  • Aluminum
    • A Source Unknown

1525 Miles

2010

5A

2031
    This listing for aluminum only applies to the mainstem South Fork Eel River in the South Fork Eel River HA. The listing does not include Elder Creek or any other tributary in the South Fork Eel River HA.
  • Sedimentation/Siltation
    • A Source Unknown

1525 Miles

1994

5B

1999
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Logging Road Construction/Maintenance
    • Removal of Riparian Vegetation
    • Silviculture

1525 Miles

1996

5B

1999
    This listing does not apply to Dutch Charlie Creek or Redwood Creek, both which lie within the Eel River HU, South Fork HA water body.
  • Total Dissolved Solids
    • A Source Unknown

1525 Miles

2012

5A

2031
    This listing only applies to the mainstem of the South Fork Eel River within the Eel River HU, South Fork HA water body.


Region 1

Eel River HU, Upper Main HA (Includes Tomki Creek)

River & Stream

1111.630201,1111.630202,1111.630203,1111.630401,1111.630501,1111.630502,1111.630503,1111.630603,1111.630704,1111.630706  /  18010110
  • Aluminum
    • A Source Unknown

3298 Miles

2010

5A

2031
    This listing only applies to the mainstem Eel River in the "Eel River HU, Upper Main HA (Includes Tomki Creek)" water body.
  • Sedimentation/Siltation
    • Agriculture-grazing
    • Construction/Land Development
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Harvesting, Restoration, Residue Management
    • Highway/Road/Bridge Construction
    • Logging Road Construction/Maintenance
    • Removal of Riparian Vegetation
    • Silvicultural Point Sources
    • Silviculture
    • Streambank Modification/Destabilization

3298 Miles

1994

5B

2004
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

3298 Miles

1996

5B

2004


Region 1

Eel River HU, Upper Main HA, Lake Pillsbury HSA, Lake Pillsbury

Lake & Reservoir

1111.630401,1111.630501,1111.630502,1111.630704  /  18010103
  • Mercury
    • A Source Unknown

1947 Acres

1998

5A

2012


Region 1

Eel River HU, Van Duzen River HA

River & Stream

1111.130101,1111.220401,1111.220403,1111.220501,1111.220505,1111.220604,1111.230102,1111.230104,1111.230201,1111.230204  /  18010105
  • Aluminum
    • A Source Unknown

1294 Miles

2010

5A

2031
    This listing only applies to Yager Creek in the Eel River HU, Van Duzen HA. It does not apply to any other streams in this water body.
  • Sedimentation/Siltation
    • Channel Erosion
    • Construction/Land Development
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Habitat Modification
    • Harvesting, Restoration, Residue Management
    • Logging Road Construction/Maintenance
    • Natural Sources
    • Removal of Riparian Vegetation
    • Silvicultural Point Sources
    • Silviculture
    • Streambank Modification/Destabilization

1294 Miles

1994

5B

1999


Region 1

Eureka Plain HU, Elk River Watershed, Lower Elk River and Martin Slough

River & Stream

1110.000401,1110.000402,1110.000700  / 
  • Indicator Bacteria
    • A Source Unknown

20 Miles

2012

5A

2025
    This listing only applies to the lower mainstem Elk River and Martin Slough, which lie within the Eureka Plain HU, Elk River Watershed, Lower Elk River and Martin Slough water body.
  • Sediment
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

20 Miles

2014

5B

2018


Region 1

Eureka Plain HU, Elk River Watershed, Upper Elk River

River & Stream

1110.000201,1110.000202,1110.000301,1110.000302,1110.000402  / 
  • Aluminum
    • A Source Unknown

96 Miles

2012

5A

2032
    Listing only applies to the Mainstem Elk River, South Fork Elk River, and North Fork Elk river within the Eureka Plain HU, Elk River Watershed, Upper Elk River water body.
  • Sediment
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

96 Miles

2014

5B

2018


Region 1

Eureka Plain HU, Freshwater Creek

River & Stream

1110.000101,1110.000102,1110.000103,1110.000104,1110.000105  /  18010105
  • Aluminum
    • A Source Unknown

114 Miles

2010

5A

2031
    This listing only applies to the mainstem of Freshwater Creek in the "Eureka Plain HU, Freshwater Creek" waterbody.
  • Sedimentation/Siltation
    • A Source Unknown

114 Miles

1998

5A

2017
    The Eureka Plain HU, Freshwater Creek includes the following Calwater Planning Watersheds (PWS): Upper Freshwater Creek (1110000101), Little Freshwater Creek (1110000103), Cloney Gulch (1110000102), Ryan Slough (1110000104), and Fay Slough (1110000105).


Region 1

Eureka Plain HU, Gannon Slough

River & Stream

1110.000502,1110.000503  /  18010105
  • Indicator Bacteria
    • A Source Unknown

2.7 Miles

2012

5A

2026
    This listing applies only to Campbell Creek, which lies within the Eureka Plain HU, Gannon Slough water body.


Region 1

Eureka Plain HU, Humboldt Bay

Bay & Harbor

1110.000105,1110.000106,1110.000107,1110.000401,1110.000402,1110.000502,1110.000503,1110.000601,1110.000602,1110.000603,(Total Count: 11)  /  18010105
  • Dioxin Toxic Equivalents
    • A Source Unknown
    • Industrial Point Sources
    • Waste Storage/Storage Tank Leaks (above ground)

16075 Acres

2006

5A

2031
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

16075 Acres

2002

5A

2025


Region 1

Eureka Plain HU, Jacoby Creek watershed

River & Stream

1110.000503,1110.000504  /  18010102
  • Aluminum
    • A Source Unknown

28 Miles

2010

5A

2031
    This listing applies only to the mainstem Jacoby Creek in the "Eureka Plain HU, Jacoby Creek watershed" waterbody.
  • Sediment
    • A Source Unknown

28 Miles

2002

5A

2019
    The Eureka Plain HU, Jacoby Creek watershed includes the following Calwater Planning Watersheds (PWS): 110.00010 and 110.00013.


Region 1

Eureka Plain HU, Jolly Giant Creek

River & Stream

1110.000501  /  18010102
  • Indicator Bacteria
    • A Source Unknown

2.1 Miles

2012

5A

2025
    This listing applies to the mainstem of Jolly Giant Creek.


Region 1

Eureka Plain HU, Salmon Creek

River & Stream

1110.000602,1110.000604,1110.000605  /  18010105
  • Aluminum
    • A Source Unknown

33 Miles

2010

5A

2031
    This listing only applies to the mainstem Salmon Creek in the "Eureka Plain HU, Salmon Creek" waterbody.
  • Manganese
    • A Source Unknown

33 Miles

2014

5A

2031
    This listing only applies to the mainstem of Salmon Creek in the Eureka Plain HU, Salmon Creek waterbody.


Region 1

Greenwood State Beach

Coastal & Bay Shoreline

1113.500707,1113.610001,1113.610002,1113.620001,1113.630002  / 
  • Indicator Bacteria
    • A Source Unknown

0.39 Miles

2014

5A

2022


Region 1

Hare Creek Beach

Coastal & Bay Shoreline

1113.200401,1113.200402,1113.200403  /  18010108
  • Indicator Bacteria
    • A Source Unknown

0.11 Miles

2010

5A

2022


Region 1

Iron Gate Reservoir

Lake & Reservoir

1105.370203,1105.380201  /  18010206
  • Cyanobacteria hepatotoxic microcystins
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

916 Acres

2006

5B

2010
  • Mercury
    • A Source Unknown

916 Acres

2012

5A

2025


Region 1

Klamath River HU, Lost River HA, Tule Lake and Mt Dome HSAs

River & Stream

10590000  /  18010204
  • Arsenic
    • A Source Unknown

773 Miles

2014

5A

2032
  • Mercury
    • A Source Unknown

773 Miles

2012

5A

2032
    This listing applies only to the Klamath Straits Drain, which lies within the Klamath River HU, Lost River HA, Tule Lake and Mt Dome HSA water body.
  • Nutrients
    • Agricultural Return Flows
    • Agricultural Water Diversion
    • Agriculture
    • Agriculture-irrigation tailwater
    • Agriculture-subsurface drainage
    • Drainage/Filling Of Wetlands
    • Habitat Modification
    • Natural Sources
    • Nonpoint Source
    • Removal of Riparian Vegetation
    • Specialty Crop Production
    • Water Diversions

773 Miles

1996

5B

2008
    The Klamath River HU, Lost River HA, Tule Lake and Mt Dome includes the following Hydrologic Sub Areas (HSAs): Mt. Dome HSA 105.91 and Tule Lake HSA 105.92.
  • Oxygen, Dissolved
    • Agricultural Return Flows
    • Agriculture
    • Agriculture-irrigation tailwater
    • Internal Nutrient Cycling (primarily lakes)
    • Natural Sources

773 Miles

2012

5B

2008
  • pH (high)
    • Agricultural Return Flows
    • Agriculture
    • Agriculture-irrigation tailwater
    • Internal Nutrient Cycling (primarily lakes)
    • Natural Sources

773 Miles

2012

5B

2008


Region 1

Klamath River HU, Lower HA, Klamath Glen HSA

River & Stream

1105.110201,1105.110306,1105.110501,1105.110504,1105.110505,1105.110506,1105.110701,1105.110801,1105.110804,1106.110304  /  18010102
  • Aluminum
    • A Source Unknown

1299 Miles

2010

5A

2031
    This listing only applies to the mainstem Klamath River within the "Klamath River HU, Lower Klamath HA, Klamath Glen HSA" waterbody.
  • Nutrients
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

1299 Miles

1996

5B

2010
  • Organic Enrichment/Low Dissolved Oxygen
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

1299 Miles

1998

5B

2010
    This listing only applies to the mainstem Klamath River within the "Klamath River HU, Lower HA, Klamath Glen HSA" waterbody.
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

1299 Miles

1996

5A

2025
    It is not the State Water Board's intent that this listing affect other actions related to decommissioning and removal of dams on the Klamath River.
  • Temperature, water
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Flow Alteration/Regulation/Modification
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Removal of Riparian Vegetation
    • Road Construction
    • Silviculture

1299 Miles

1996

5B

    RWQCB staff recommend that the USEPA should not remove the mainstem Klamath River at Klamath Glen (within the Yurok Tribal Reservation boundary) from the section 303(d) list for this pollutant, because applicable water quality standards for the pollutant are being exceeded.


Region 1

Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

River & Stream

1105.120302,1105.210305,1105.310102,1105.310205,1105.310403,1105.310406,1105.310407,1105.310601,1105.310604,1105.310705  /  18010211
  • Cyanobacteria hepatotoxic microcystins
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

4324 Miles

2010

5B

2010
    This listing applies to the mainstem Klamath River in the Klamath River Hydrologic Unit, Middle and Lower Klamath River Hydrologic Areas, Scott River to Trinity River reach.
  • Nutrients
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

4324 Miles

1996

5B

2010
  • Organic Enrichment/Low Dissolved Oxygen
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

4324 Miles

1998

5B

2010
    This listing only applies to the portion of the mainstem Klamath River that lies within the Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River water body.
  • Sediment
    • A Source Unknown

4324 Miles

2010

5A

2025
    This listing for sediment only applies to the mainstem of the following waterbodies in the Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River: China Creek, Grider Creek, Thompson Creek, and Walker Creek. The following streams are not significantly altered by anthropogenic activities, and are reference streams, which indicates attainment of sediment water quality objectives: (1) Portuguese Creek and its Tributaries; (2) Fort Goff Creek and its Tributaries; (3) Cedar Creek and its tributaries; (4) Clear Creek and its tributaries from the headwaters to the confluence with Tenmile Creek; (5) Twin Valley Creek and its tributaries; (6) Canyon Creek and its tributaries from the headwaters to confluence with Seiad Creek; (7) Elk Creek and its tributaries from the headwaters to Bear Creek; (8) Ten Mile Creek and its tributaries; and (9) North Fork Dillon Creek and its tributaries from the from the headwaters to Vann Creek.
  • Temperature, water
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Flow Alteration/Regulation/Modification
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Removal of Riparian Vegetation
    • Road Construction
    • Silviculture

4324 Miles

1996

5B

2010
    This listing does not apply to the following streams, which lie within the Klamath River HU, Salmon River HA water body : (1) Portuguese Creek and its Tributaries, (2) Cedar Creek and its Tributaries, (3) Twin Valley Creek and its, (4) North Fork Dillon Creek and its Tributaries from the headwaters to Vann Creek, (5) Canyon Creek and its Tributaries from the headwaters to confluence with Seiad Creek, (6) Elk Creek and its Tributaries from the headwaters to Bear Creek, (7) Tenmile Creek and its Tributaries, (8) Clear Creek and its Tributaries from the headwaters to the confluence with Tenmile Creek, (9) Fort Goff Creek and its Tributaries.


Region 1

Klamath River HU, Middle HA, Iron Gate Dam to Scott River

River & Stream

1105.350105,1105.350304,1105.350306,1105.350504,1105.360101,1105.360205,1105.360303,1105.360304,1105.370101,1105.370204  /  18010208
  • Aluminum
    • A Source Unknown

1638 Miles

2010

5A

2031
    This listing only applies to the portion of the mainstem Klamath River that lies within the Klamath River HU, Middle HA, Iron Gate Dam to Scott River water body.
  • Cyanobacteria hepatotoxic microcystins
    • Agriculture
    • Grazing-Related Sources
    • Habitat Modification
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

1638 Miles

2010

5B

2010
    This listing applies to the mainstem Klamath River in the Klamath River Hydrologic Unit, Middle Klamath River Hydrologic Area, Iron Gate Dam to Scott River reach.
  • Nutrients
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

1638 Miles

1998

5B

2010
  • Organic Enrichment/Low Dissolved Oxygen
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Road Construction
    • Silviculture

1638 Miles

1996

5B

2010
    This listing only applies to the portion of the mainstem Klamath River that lies within the Klamath River HU, Middle HA, Iron Gate Dam to Scott River water body.
  • Sediment
    • A Source Unknown

1638 Miles

2010

5A

2025
    This listing for sediment only applies to the mainstem of the following waterbodies in the Klamath River HU, Middle HA, Iron Gate Dam to the Scott River: Beaver Creek, Cow Creek, Deer Creek, Hungry Creek, and West Fork Beaver Creek.
  • Temperature, water
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Flow Alteration/Regulation/Modification
    • Grazing-Related Sources
    • Irrigated Crop Production
    • Logging Road Construction/Maintenance
    • Removal of Riparian Vegetation
    • Road Construction
    • Silviculture

1638 Miles

1998

5B

2010
    The Klamath River HU, Middle HA, Iron Gate Dam to Scott River includes the following Hydrologic Sub Areas (HSAs) : Beaver Creek HSA 105.35 and Hornbrook HSA 105.36.


Region 1

Klamath River HU, Scott River HA

River & Stream

1105.410102,1105.410201,1105.410303,1105.410305,1105.410306,1105.420105,1105.420404,1105.420405,1105.420701,1105.420903  /  18010210
  • Aluminum
    • A Source Unknown

2444 Miles

2010

5A

2025
    This listing only applies to the middle mainstem Scott River from Young's Dam to Boulder Creek, which lies within the Klamath River HU, Scott River HA water body.
  • Biostimulatory Conditions
    • A Source Unknown

2444 Miles

2012

5A

2025
    This listing only applies to the middle mainstem Scott River from Young's Dam to Boulder Creek, which lies within the Klamath River HU, Scott River HA water body.
  • Oxygen, Dissolved
    • A Source Unknown

2444 Miles

2012

5A

2031
    This listing only applies to the middle mainstem Scott River from Young's Dam to Boulder Creek and Snicktaw Creek, which lie within the "Klamath River HU, Scott River HA" water body.
  • Sedimentation/Siltation
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Habitat Modification
    • Logging Road Construction/Maintenance
    • Other
    • Removal of Riparian Vegetation

2444 Miles

1996

5B

2006
    This listing does not apply to (1) Mill Creek and its Tributaries from the headwaters to the confluence with Etna Creek or (2) Canyon Creek and its Tributaries from the headwaters to the downstream boundary of the Marble Mountain Wilderness, which lie within the Klamath River HU, Scott River HA water body.
  • Temperature, water
    • Agricultural Return Flows
    • Agricultural Water Diversion
    • Domestic Use of Ground Water
    • Flow Alteration/Regulation/Modification
    • Hydromodification
    • Other
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization
    • Water Diversions

2444 Miles

1996

5B

2006
    This listing does not apply to (1) Mill Creek and its Tributaries from the headwaters to the confluence with Etna Creek and (2) Canyon Creek and its Tributaries from the headwaters to the downstream boundary of the Marble Mountain Wilderness, which lie within the Klamath River HU, Scott River HA water body. RWQCB staff recommend that the USEPA should not remove the portions of this water body within the QVIR boundary from the section 303(d) list for temperature because applicable water quality standards for the pollutant are being exceeded.
  • pH
    • A Source Unknown

2444 Miles

2012

5A

2025
    This listing only applies to the middle mainstem Scott River from Young's Dam to Boulder Creek and Shackleford Creek above Campbell Lake, which lie within the Klamath River HU, Scott River HA water body.


Region 1

Klamath River HU, Shasta River HA

River & Stream

1105.500201,1105.500203,1105.500302,1105.500402,1105.500603,1105.500709,1105.500801,1105.500803,1105.500902,1105.501003  /  18010208
  • Aluminum
    • A Source Unknown

1403 Miles

2010

5A

2031
    This listing only applies to the mainstem Shasta River, which lies within the "Klamath River HU, Shasta River HA" water body.
  • Organic Enrichment/Low Dissolved Oxygen
    • Agriculture-irrigation tailwater
    • Agriculture-storm runoff
    • Dairies
    • Dam Construction
    • Flow Alteration/Regulation/Modification
    • Habitat Modification
    • Hydromodification
    • Minor Municipal Point Source-dry and/or wet weather discharge

1403 Miles

1800

5B

2007
  • Temperature, water
    • Agriculture-irrigation tailwater
    • Flow Alteration/Regulation/Modification
    • Habitat Modification
    • Removal of Riparian Vegetation

1403 Miles

1996

5B

2007


Region 1

Luffenholtz Beach

Coastal & Bay Shoreline

1108.100002,1108.100002,1108.100002,1108.100002,1108.100003,1108.100003,1108.100003,1108.200001,1108.200001,1108.200001,(Total Count: 16)  /  18010102
  • Indicator Bacteria
    • A Source Unknown

0.44 Miles

2006

5A

2022


Region 1

MacKerricher State Park (near Mill Creek)

Coastal & Bay Shoreline

1113.200504,1113.200505,1113.200506,1113.200507  /  18010108
  • Indicator Bacteria
    • A Source Unknown

1.2 Miles

2010

5A

2022


Region 1

Mackerricher State Park (near Virgin Creek)

Coastal & Bay Shoreline

1113.200504,1113.200505,1113.200506,1113.200507  /  18010108
  • Indicator Bacteria
    • A Source Unknown

0.86 Miles

2012

5A

2022


Region 1

Mad River HU, Mad River

River & Stream

1107.300103,1109.100103,1109.300201,1109.300302,1109.300404,1109.300405,1109.300503,1109.300602,1109.400301,1109.400302  /  18010104
  • Aluminum
    • A Source Unknown

1882 Miles

2010

5A

2031
    This listing only applies to the mainstem Mad River which lies within the "Mad River HU, Mad River" water body.
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

1882 Miles

1994

5B

2007
  • Temperature, water
    • A Source Unknown

1882 Miles

2002

5A

2031
  • Turbidity
    • A Source Unknown

1882 Miles

1994

5A

2031


Region 1

Mad River HU, Norton Creek

River & Stream

1109.100200  /  18010102
  • Indicator Bacteria
    • A Source Unknown

7.1 Miles

2012

5A

2025
    This listing applies only to the mainstem of Widow White Creek, which lies within the Mad River HU.


Region 1

Mendocino Coast HU, Albion River HA, Albion River

River & Stream

1113.400001,1113.400002,1113.400003,1113.400006  /  18010108
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Logging Road Construction/Maintenance
    • Nonpoint Source
    • Removal of Riparian Vegetation
    • Silviculture

98 Miles

1994

5B

2001
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

98 Miles

2006

5A

2019


Region 1

Mendocino Coast HU, Big River HA, Berry Gulch

River & Stream

1113.300402,1113.300403  /  18010108
  • Oxygen, Dissolved
    • A Source Unknown

28 Miles

2012

5A

2025
    This listing only applies to Rocky Gulch, the Little North Fork, and Manley Gulch which lie within the "Mendocino Coast HU, Big River HA, Berry Gulch" water body.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

28 Miles

1800

5A

2025
    This listing only applies to the Little North Fork, which lies within the Mendocino Coast HU, Big River HA, Berry Gulch water body.


Region 1

Mendocino Coast HU, Big River HA, Big River

River & Stream

1113.300101,1113.300102,1113.300103,1113.300104,1113.300201,1113.300202,1113.300203,1113.300301,1113.300302,1113.300303,(Total Count: 15)  /  18010108
  • Oxygen, Dissolved
    • A Source Unknown

448 Miles

2012

5A

2025
    This listing only applies to Cookhouse Gulch, the mainstem Big River, and Railroad Gulch which lie within the "Mendocino Coast HU, Big River HA, Big River" water body.
  • Sedimentation/Siltation
    • Disturbed Sites (Land Develop.)
    • Flow Alteration/Regulation/Modification
    • Logging Road Construction/Maintenance
    • Nonpoint Source
    • Removal of Riparian Vegetation
    • Road Construction
    • Silviculture

448 Miles

1994

5B

2004
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

448 Miles

1996

5A

2019


Region 1

Mendocino Coast HU, Garcia River HA, Garcia River

River & Stream

1113.700101,1113.700102,1113.700103,1113.700104,1113.700105,1113.700201,1113.700202,1113.700203,1113.700204,1113.700205,(Total Count: 12)  /  18010109
  • Sediment
    • A Source Unknown

243 Miles

1994

5B

2002
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

243 Miles

2002

5A

2019
    Elevated temperatures impacting cold water fisheries in these reaches and sub_areas: Planning Units 113.70010 (Pardaloe Creek), 113.70011, 12, 13, 14, 20, 21 and the entire mainstem Garcia River from Pardaloe Creek to the estuary, which includes that portion of 113.70022, 23, 24, 25, and 26. February 2002- The Garcia River TMDL for sediment has been adopted by NCRWQCB and approved by SWRCB and Office of Administrative Law. It is possible that voluntary compliance with measures in this TMDL will improve conditions related to temperature prior to development of a TMDL for temperature.


Region 1

Mendocino Coast HU, Gualala River HA, Gualala River

River & Stream

1113.810002,1113.810003,1113.820001,1113.820003,1113.820004,1113.830002,1113.830003,1113.840302,1113.840304,1113.850101  /  18010109
  • Aluminum
    • A Source Unknown

685 Miles

2010

5A

2025
    This listing for aluminum only applies to the mainstem Gualala River in the Gualala River HA.
  • Sedimentation/Siltation
    • Disturbed Sites (Land Develop.)
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Harvesting, Restoration, Residue Management
    • Highway/Road/Bridge Construction
    • Land Development
    • Logging Road Construction/Maintenance
    • Nonpoint Source
    • Removal of Riparian Vegetation
    • Silviculture
    • Specialty Crop Production

685 Miles

1994

5B

2004
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

685 Miles

2002

5A

2019
    The Gualala River is listed for temperature, with the exception of the Little North Fork and its tributaries.


Region 1

Mendocino Coast HU, Navarro River HA

River & Stream

1113.500104,1113.500201,1113.500303,1113.500304,1113.500401,1113.500404,1113.500603,1113.500703,1113.500706,1113.500707  /  18010109
  • Nickel
    • A Source Unknown

786 Miles

2012

5A

2031
    This listing only applies to the mainstem Navarro River in the "Mendocino Coast HU, Navarro River HA" waterbody.
  • Sedimentation/Siltation
    • Agriculture
    • Agriculture-grazing
    • Channel Erosion
    • Construction/Land Development
    • Disturbed Sites (Land Develop.)
    • Drainage/Filling Of Wetlands
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Habitat Modification
    • Harvesting, Restoration, Residue Management
    • Highway/Road/Bridge Construction
    • Irrigated Crop Production
    • Land Development
    • Logging Road Construction/Maintenance
    • Nonirrigated Crop Production
    • Nonpoint Source
    • Range Grazing-Riparian
    • Range Grazing-Riparian and/or Upland
    • Range Grazing-Upland
    • Removal of Riparian Vegetation
    • Resource Extraction
    • Silvicultural Point Sources
    • Silviculture
    • Specialty Crop Production
    • Streambank Modification/Destabilization
    • Water Diversions

786 Miles

1994

5B

2000
  • Temperature, water
    • Agricultural Return Flows
    • Agriculture
    • Drainage/Filling Of Wetlands
    • Flow Alteration/Regulation/Modification
    • Habitat Modification
    • Nonpoint Source
    • Removal of Riparian Vegetation
    • Resource Extraction
    • Streambank Modification/Destabilization
    • Water Diversions

786 Miles

1996

5B

2000


Region 1

Mendocino Coast HU, Noyo River HA, Noyo River

River & Stream

1113.200101,1113.200102,1113.200103,1113.200104,1113.200105,1113.200106,1113.200201,1113.200202,1113.200301,1113.200302,(Total Count: 12)  /  18010108
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Nonpoint Source
    • Removal of Riparian Vegetation
    • Silviculture

344 Miles

1994

5B

1999
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

344 Miles

2006

5A

2019
    This listing only applies to the following areas of the Noyo River watershed: (1) The Noyo River mainstem from the confluence of Duffy Gulch downstream to the confluence with Hayshed Gulch, (2) The South Fork Noyo River mainstem from the confluence of Kass Creek downstream to the confluence with Noyo River mainstem, (3) The Little North Fork Noyo River, (4) Duffy Gulch, and (5) Kass Creek tributaries.


Region 1

Mendocino Coast HU, Noyo River HA, Pudding Creek

River & Stream

1113.200501,1113.200508  /  18010108
  • Indicator Bacteria
    • A Source Unknown

41 Miles

2012

5A

2025
    This listing applies only to Pudding Creek Lagoon, which lies within the Mendocino Coast HU, Noyo River HA, Pudding Creek water body.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

41 Miles

2006

5A

2031
    This listing only applies to the mainstem of Pudding Creek, which lies within the Mendocino Coast HU, Noyo River HA, Pudding Creek water body. This is a refinement of the original 2006 303 (d) listing and reflects the extent of impairment as documented by the data submitted.


Region 1

Mendocino Coast HU, Rockport HA, Ten Mile River HSA

River & Stream

1113.130101,1113.130102,1113.130201,1113.130202,1113.130203,1113.130204,1113.130301,1113.130302,1113.130303,1113.130304,(Total Count: 14)  /  18010108
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Harvesting, Restoration, Residue Management
    • Logging Road Construction/Maintenance
    • Removal of Riparian Vegetation
    • Silviculture

252 Miles

1996

5B

2000
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

252 Miles

2002

5A

2025
    This listing does not apply to Mill Creek, Gulch 11, Churchman Creek, Little Bear Haven Creek, Buckhorn Creek, Booth Gulch, Smith Creek, Bear Haven Creek, and the Little North Fork Ten Mile River, all of which lie within the Mendocino Coast HU, Rockport HA, Ten Mile River HSA water body.


Region 1

Moonstone County Park

Coastal & Bay Shoreline

1108.100002,1108.200002  /  18010102
  • Indicator Bacteria
    • A Source Unknown

0.93 Miles

2010

5A

2022


Region 1

Navarro River Beach

Coastal & Bay Shoreline

1113.400003,1113.400004,1113.400005,1113.500707,1113.610002  / 
  • Indicator Bacteria
    • A Source Unknown

0.53 Miles

2014

5A

2022


Region 1

Old Home Beach

Coastal & Bay Shoreline

1108.100002  /  18010102
  • Indicator Bacteria
    • A Source Unknown

0.11 Miles

2012

5A

2022


Region 1

Plaskett Lake

Lake & Reservoir

1111.730203  /  18010104
  • Mercury
    • A Source Unknown

6.3 Acres

2012

5A

2031


Region 1

Pudding Creek Beach

Coastal & Bay Shoreline

1113.200507,1113.200508  /  18010108
  • Indicator Bacteria
    • A Source Unknown

0.16 Miles

2010

5A

2022


Region 1

Redwood Creek HU, Redwood Creek

River & Stream

1107.100103,1107.100201,1107.100203,1107.200101,1107.200102,1107.200201,1107.200202,1107.200302,1107.200401,1107.300103  /  18010102
  • Aluminum
    • A Source Unknown

524 Miles

2010

5A

2031
    This listing only applies to the mainstem of Redwood Creek in the "Redwood Creek HU, Redwood Creek" waterbody.
  • Sedimentation/Siltation
    • Construction/Land Development
    • Disturbed Sites (Land Develop.)
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Harvesting, Restoration, Residue Management
    • Logging Road Construction/Maintenance
    • Natural Sources
    • Range Grazing-Riparian
    • Removal of Riparian Vegetation
    • Silviculture
    • Streambank Modification/Destabilization

524 Miles

1994

5B

1998
  • Temperature, water
    • A Source Unknown

524 Miles

2002

5A

2031
    This listing does not apply to Larry Dam Creek, Little Lost Man Creek, Lost Man Creek, Prairie Creek, and Tom McDonald Creek which lie within the "Redwood Creek HU, Redwood Creek" water body.


Region 1

Russian Gulch

Coastal & Bay Shoreline

1113.200402,1113.300403,1113.300404,1113.300405,1113.400004  / 
  • Indicator Bacteria
    • A Source Unknown

0.08 Miles

2014

5A

2022


Region 1

Russian River HU, Lower Russian River HA, Austin Creek HSA

River & Stream

1114.110402,1114.120001,1114.120002,1114.120003,1114.120004,1114.120005  /  18010109
  • Oxygen, Dissolved
    • A Source Unknown

151 Miles

2010

5A

2032
    This listing only applies to the mainstem of Austin Creek in the "Russian River HU, Lower Russian River HA, Austin Creek HSA" waterbody.
  • Sedimentation/Siltation
    • A Source Unknown
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

151 Miles

1998

5A

2025
    Sediment impacts in Russian River tributaries prompted listing entire Russian River watershed for sediment.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

151 Miles

2002

5A

2031


Region 1

Russian River HU, Lower Russian River HA, Guerneville HSA

River & Stream

1114.110101,1114.110102,1114.110103,1114.110104,1114.110301,1114.110302,1114.110303,1114.110304,1114.110401,1114.110402,(Total Count: 12)  /  18010111
  • Aluminum
    • A Source Unknown

249 Miles

2010

5A

2025
    The listing only applies to the mainstem Russian River: (1) at Healdsburg Memorial Beach from the railroad bridge to highway 101 and (2) from Fife Creek to Dutch Bill Creek, which lie within the Russian River HU, Lower Russian River HA, Guerneville HSA water body.
  • Indicator Bacteria
    • A Source Unknown

249 Miles

2002

5A

2020
    This listing only applies to (1) the mainstem Russian River at Healdsburg Memorial Beach from the railroad bridge to the Highway 101 bridge, (2) the mainstem Russian River from Fife Creek to Dutch Bill Creek, and (3) the mainstem of Dutch Bill Creek.
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

249 Miles

1998

5A

2025
    Sediment impacts in Russian River tributaries prompted listing entire Russian River watershed for sediment TMDL.
  • Specific Conductivity
    • A Source Unknown

249 Miles

2010

5A

2025
    This listing only applies to the mainstem Russian River at Healdsburg Memorial Beach from the railroad bridge to the Highway 101 bridge, which lies within the "Russian River HU, Lower Russian River HA, Guerneville HSA" water body.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

249 Miles

2002

5A

2019


Region 1

Russian River HU, Lower Russian River HA, Guerneville HSA, Green Valley Creek watershed

River & Stream

1114.110103,1114.110201,1114.110202  /  18010111
  • Indicator Bacteria
    • A Source Unknown

50 Miles

2010

5A

2020
  • Oxygen, Dissolved
    • A Source Unknown

50 Miles

2010

5A

2021
    This listing only applies to Green Valley Creek in the "Russian River HU, Lower Russian River HA, Guerneville HSA, Green Valley Creek watershed" water body.


Region 1

Russian River HU, Middle Russian River HA, Big Sulphur Creek HSA

River & Stream

1114.250101,1114.260101,1114.260102,1114.260103,1114.260104,1114.260201,1114.260202,1114.260203,1114.260204  /  18010110
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

180 Miles

1998

5A

2025
    Sediment impacts in Russian River tributaries prompted listing entire Russian River watershed for sediment .
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

180 Miles

2002

5A

2019
    The most sensitive beneficial uses supported by the Russian River include uses associated with the cold water fishery and municipal and domestic supply. The Russian River provides habitat for coho salmon and steelhead trout, which are listed as a threatened species under the federal Endangered Species Act. Temperature data collected from 1997 to 2000 in the Russian River watershed indicate that high temperature levels may be a source of impairment of cold water fisheries in the watershed.


Region 1

Russian River HU, Middle Russian River HA, Geyserville HSA

River & Stream

1114.250101,1114.250103,1114.250104,1114.250302,1114.250402,1114.250403,1114.250404,1114.250501,1114.250502,1114.310701  /  18010110
  • Aluminum
    • A Source Unknown

436 Miles

2010

5A

2031
    This listing only applies to the mainstem Russian River in the "Russian River HU, Middle Russian River HA, Geyserville HSA" waterbody.
  • Diazinon
    • A Source Unknown

436 Miles

2010

5A

2025
    This listing applies only to Foss Creek which lies within the "Russian River HU, Middle Russian River HA, Geyserville HSA" waterbody.
  • Indicator Bacteria
    • A Source Unknown

436 Miles

2010

5A

2020
    The listing only applies to Stream 1 on Fitch Mountain, which lies within the Russian River HU, Middle Russian River HA, Geyserville HSA water body.
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

436 Miles

1998

5A

2025
    Sediment impacts in Russian River tributaries prompted listing entire Russian River watershed for sediment TMDL.
  • Specific Conductivity
    • A Source Unknown

436 Miles

2010

5A

2031
    This listing only applies to the mainstem Russian River in the "Russian River HU, Lower Russian River HA, Geyserville HSA" waterbody.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

436 Miles

2002

5A

2031


Region 1

Russian River HU, Middle Russian River HA, Laguna HSA, mainstem Laguna de Santa Rosa

River & Stream

1114.210001,1114.210002,1114.220103,1114.230201  / 
  • Indicator Bacteria
    • A Source Unknown

16 Miles

2012

5A

2020
  • Mercury
    • A Source Unknown

16 Miles

2012

5A

2025
  • Oxygen, Dissolved
    • A Source Unknown

16 Miles

2012

5A

2023
    The Laguna de Santa Rosa was added to the 303(d) List in 1990 for high levels of ammonia and low dissolved oxygen (DO) concentrations. A TMDL was completed for the Laguna for ammonia and dissolved oxygen in 1995. The TMDL concluded that high ammonia levels in the Laguna were the result of point and non-point source nitrogen inputs of various forms. Low dissolved oxygen concentrations were a result of inputs of organic matter and nutrients which stimulate algal growth and subsequently cause depressed dissolved oxygen levels when the algae dies and decays. The TMDL took the form of a Waste Reduction Strategy (WRS) which addressed the reduction of nitrogen loading from point and non-point sources. With the implementation of the WRS and operational improvements at the City of Santa Rosa Waste Water Treatment Plant as well as improvements in waste storage and disposal activities at local dairies, nitrogen inputs to the Laguna were significantly reduced. Following implementation of the WRS and the subsequent attainment of nitrogen-ammonia interim concentration goals, as stated in the WRS, the Laguna was removed from the 303(d) List for ammonia and dissolved oxygen in 1998, pursuant to a recommendation by US EPA. However, dissolved oxygen levels in the Laguna continue to fall below the Regional Water Board Basin Plan minimum DO objective of 7.0 mg/L and in many cases fluctuate significantly on a daily and seasonal basis. Preliminary TMDL linkage analysis and modeling results by Regional Water Board staff provide evidence that total phosphorus concentrations drive algal biomass and therefore drive dissolved oxygen concentrations. Regional Water Board staff conclude that reductions in total phosphorus are needed to reduce algal biomass and thus reduce the biostimulatory response (increase dissolved oxygen levels).
  • Phosphorus
    • A Source Unknown

16 Miles

2012

5A

2023
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

16 Miles

2012

5A

2023
    The entire Russian River watershed (including the mainstem Laguna de Santa Rosa) is listed for sedimentation.
  • Temperature, water
    • A Source Unknown

16 Miles

2012

5A

2023
    Entire Russian River watershed (including the mainstem Laguna de Santa Rosa) is listed for temperature. The most sensitive beneficial uses supported by the Russian River include uses associated with the cold water fishery and municipal and domestic supply. The Russian River provides habitat for coho salmon and steelhead trout, which are listed as a threatened species under the federal Endangered Species Act. Temperature data collected from 1997 to 2000 in the Russian River watershed indicate that high temperature levels may be a source of impairment of cold water fisheries in the watershed.


Region 1

Russian River HU, Middle Russian River HA, Laguna HSA, tributaries to the Laguna de Santa Rosa (except Santa Rosa Creek and its tributaries)

River & Stream

1114.210001,1114.210002,1114.210003,1114.230201  / 
  • Indicator Bacteria
    • A Source Unknown

117 Miles

2012

5A

2020
  • Oxygen, Dissolved
    • A Source Unknown

117 Miles

2012

5A

2023
    This listing only applies to the mainstem of Colgan Creek, which lies within the "Russian River HU, Middle Russian River HA, Laguna HSA, tributaries to the Laguna de Santa Rosa (except Santa Rosa Creek and its tributaries)" water body.
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

117 Miles

2012

5A

2023
    The entire Russian River watershed (including the tributaries to the Laguna de Santa Rosa) is listed for sedimentation.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

117 Miles

2012

5A

2023
    Entire Russian River watershed (including tributaries to the Laguna de Santa Rosa) is listed for temperature. The most sensitive beneficial uses supported by the Russian River include uses associated with the cold water fishery and municipal and domestic supply. The Russian River provides habitat for coho salmon and steelhead trout, which are listed as a threatened species under the federal Endangered Species Act. Temperature data collected from 1997 to 2000 in the Russian River watershed indicate that high temperature levels may be a source of impairment of cold water fisheries in the watershed.


Region 1

Russian River HU, Middle Russian River HA, Mark West HSA, Windsor Creek and its tributaries

River & Stream

1114.230201,1114.230202  / 
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

47 Miles

2012

5A

2023
    Russian River Watershed tributary sediment impairments led to listing of entire watershed for sediment.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

47 Miles

2012

5A

2023
    The most sensitive beneficial uses supported by the Russian River include uses associated with the cold water fishery and municipal and domestic supply. The Russian River provides habitat for coho salmon and steelhead trout, which are listed as a threatened species under the federal Endangered Species Act. Temperature data collected from 1997 to 2000 in the Russian River watershed indicate that high temperature levels may be a source of impairment of cold water fisheries in the watershed.


Region 1

Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa

River & Stream

1114.110102,1114.230201  / 
  • Aluminum
    • A Source Unknown

5.3 Miles

2012

5A

2025
  • Manganese
    • A Source Unknown

5.3 Miles

2012

5A

2025
  • Oxygen, Dissolved
    • A Source Unknown

5.3 Miles

2012

5A

2023
    The mainstem Laguna de Santa Rosa, including the portion of the mainstem Mark West Creek below the confluence with the Laguna, was added to the 303(d) List in 1990 for high levels of ammonia and low dissolved oxygen (DO) concentrations. A TMDL was completed for the Laguna for ammonia and dissolved oxygen in 1995. The TMDL concluded that high ammonia levels in the Laguna were the result of point and non-point source nitrogen inputs of various forms. Low dissolved oxygen concentrations were a result of inputs of organic matter and nutrients which stimulate algal growth and subsequently cause depressed dissolved oxygen levels when the algae dies and decays. The TMDL took the form of a Waste Reduction Strategy (WRS) which addressed the reduction of nitrogen loading from point and non-point sources. With the implementation of the WRS and operational improvements at the City of Santa Rosa Waste Water Treatment Plant as well as improvements in waste storage and disposal activities at local dairies, nitrogen inputs to the Laguna were significantly reduced. Following implementation of the WRS and the subsequent attainment of nitrogen-ammonia interim concentration goals, as stated in the WRS, the Laguna was removed from the 303(d) List for ammonia and dissolved oxygen in 1998, pursuant to a recommendation by US EPA. However, dissolved oxygen levels in the mainstem Laguna and mainstem Mark West Creek below the confluence with the Laguna continue to fall below the Regional Water Board Basin Plan minimum DO objective of 7.0 mg/L and in many cases fluctuate significantly on a daily and seasonal basis. Based on the latest available information, it appears that the nutrient driving biostimulatory conditions in the mainstem Laguna de Santa Rosa and mainstem Mark West Creek below the confluence with the Laguna is phosphorus. Preliminary TMDL linkage analysis and modeling results by Regional Water Board staff provide evidence that total phosphorus concentrations drive algal biomass and therefore drive dissolved oxygen concentrations. Regional Water Board staff conclude that reductions in total phosphorus are needed to reduce algal biomass and thus reduce the biostimulatory response (increase dissolved oxygen levels).
  • Phosphorus
    • A Source Unknown

5.3 Miles

2012

5A

2023
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

5.3 Miles

2012

5A

2023
    Russian River Watershed tributary sediment impairments led to listing of entire watershed for sediment.
  • Temperature, water
    • Other

5.3 Miles

2012

5A

2023
    The most sensitive beneficial uses supported by the Russian River include uses associated with the cold water fishery and municipal and domestic supply. The Russian River provides habitat for coho salmon and steelhead trout, which are listed as a threatened species under the federal Endangered Species Act. Temperature data collected from 1997 to 2000 in the Russian River watershed indicate that high temperature levels may be a source of impairment of cold water fisheries in the watershed.


Region 1

Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa

River & Stream

1114.230101,1114.230102,1114.230103,1114.230104,1114.230201,1114.230202  / 
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

25 Miles

2012

5A

2023
    Russian River Watershed tributary sediment impairments led to listing of entire watershed for sediment.
  • Temperature, water
    • Other

25 Miles

2012

5A

2023
    The most sensitive beneficial uses supported by the Russian River include uses associated with the cold water fishery and municipal and domestic supply. The Russian River provides habitat for coho salmon and steelhead trout, which are listed as a threatened species under the federal Endangered Species Act. Temperature data collected from 1997 to 2000 in the Russian River watershed indicate that high temperature levels may be a source of impairment of cold water fisheries in the watershed.


Region 1

Russian River HU, Middle Russian River HA, Mark West HSA, tributaries to Mark West Creek (except Windsor Creek and its tributaries)

River & Stream

1114.230101,1114.230102,1114.230103,1114.230104,1114.230201,1114.230202  / 
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

67 Miles

2012

5A

2023
    Russian River Watershed tributary sediment impairments led to listing of entire watershed for sediment.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

67 Miles

2012

5A

2023
    The most sensitive beneficial uses supported by the Russian River include uses associated with the cold water fishery and municipal and domestic supply. The Russian River provides habitat for coho salmon and steelhead trout, which are listed as a threatened species under the federal Endangered Species Act. Temperature data collected from 1997 to 2000 in the Russian River watershed indicate that high temperature levels may be a source of impairment of cold water fisheries in the watershed.


Region 1

Russian River HU, Middle Russian River HA, Santa Rosa HSA, mainstem Santa Rosa Creek

River & Stream

1114.210002,1114.220102,1114.220103,1114.220104  / 
  • Indicator Bacteria
    • A Source Unknown

21 Miles

2012

5A

2020
  • Manganese
    • A Source Unknown

21 Miles

2014

5A

2031
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

21 Miles

2012

5A

2023
    The entire Russian River watershed (including Santa Rosa Creek) is listed for sedimentation.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

21 Miles

2012

5A

2023
    The entire Russian River watershed (including Santa Rosa Creek) is listed for temperature.


Region 1

Russian River HU, Middle Russian River HA, Santa Rosa HSA, tributaries to Santa Rosa Creek

River & Stream

1114.220101,1114.220102,1114.220103,1114.220104,1114.220201,1114.220202,1114.220203  / 
  • Indicator Bacteria
    • A Source Unknown

112 Miles

2012

5A

2020
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

112 Miles

2012

5A

2023
    The entire Russian River watershed (including tributaries to Santa Rosa Creek) is listed for sedimentation.
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

112 Miles

2012

5A

2023
    The entire Russian River watershed (including tributaries to Santa Rosa Creek) is listed for temperature.


Region 1

Russian River HU, Middle Russian River HA, Warm Springs HSA

River & Stream

1114.240102,1114.240103,1114.240202,1114.240203,1114.240301,1114.240302,1114.240305,1114.240402,1114.240602,1114.240603  /  18010110
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

528 Miles

1998

5A

2025
    Sediment impacts in Russian River tributaries prompted listing entire Russian River watershed for sediment .
  • Temperature, water
    • A Source Unknown

528 Miles

2002

5A

2024


Region 1

Russian River HU, Middle Russian River HA, Warm Springs HSA, Lake Sonoma [Reservoir]

Lake & Reservoir

1114.240202,1114.240203,1114.240302,1114.240305,1114.240401  /  18010110
  • Mercury
    • A Source Unknown

2639 Acres

2002

5A

2012


Region 1

Russian River HU, Upper Russian River HA, Coyote Valley HSA

River & Stream

1114.320101,1114.320103,1114.320105,1114.320106,1114.320107,1114.320400,1114.320502,1114.320503,1114.320600,5513.540104  /  18010110
  • Aluminum
    • A Source Unknown

323 Miles

2010

5A

2031
    This listing only applies to the mainstem Russian River in the "Russian River HU, Upper Russian River HA, Coyote Valley HSA" waterbody.
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

323 Miles

1998

5A

2025
    Russian River Watershed tributary sediment impairments led to listing of entire watershed for sediment .
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

323 Miles

2002

5A

2019
    The most sensitive beneficial uses supported by the Russian River include uses associated with the cold water fishery and municipal and domestic supply. The Russian River provides habitat for coho salmon and steelhead trout, which are listed as a threatened species under the federal Endangered Species Act. Temperature data collected from 1997 to 2000 in the Russian River watershed indicate that high temperature levels may be a source of impairment of cold water fisheries in the watershed.


Region 1

Russian River HU, Upper Russian River HA, Coyote Valley HSA, Lake Mendocino [Reservoir]

Lake & Reservoir

1114.320600  /  18010110
  • Mercury
    • A Source Unknown

1698 Acres

2006

5A

2012


Region 1

Russian River HU, Upper Russian River HA, Forsythe Creek HSA

River & Stream

1114.330101,1114.330102,1114.330200,1114.330301,1114.330302,1114.330303,1114.330304,1114.330305  /  18010110
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

256 Miles

1998

5A

2025
    Russian River Watershed tributary sediment impairments led to listing of entire watershed for sediment .
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

256 Miles

2002

5A

2019
    The most sensitive beneficial uses supported by the Russian River include uses associated with the cold water fishery and municipal and domestic supply. The Russian River provides habitat for coho salmon and steelhead trout, which are listed as a threatened species under the federal Endangered Species Act. Temperature data collected from 1997 to 2000 in the Russian River watershed indicate that high temperature levels may be a source of impairment of cold water fisheries in the watershed.


Region 1

Russian River HU, Upper Russian River HA, Ukiah HSA

River & Stream

1114.310200,1114.310602,1114.310603,1114.310701,1114.310702,1114.310803,1114.310900,1114.311005,1114.311102,1114.311104  /  18010110
  • Aluminum
    • A Source Unknown

753 Miles

2010

5A

2025
    This listing only applies to mainstem Russian River and East Fork Russian River which lie within the Russian River HU, Upper Russian River HA, Ukiah HSA water body.
  • Manganese
    • A Source Unknown

753 Miles

2012

5A

2031
    This listing only applies to the Mainstem Russian River and East Fork Russian River within the "Russian River HU, Upper Russian River HA, Ukiah HSA" waterbody.
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation
    • Streambank Modification/Destabilization

753 Miles

1998

5A

2025
    Russian River Watershed tributary sediment impairments led to listing of entire watershed for sediment .
  • Temperature, water
    • A Source Unknown

753 Miles

2002

5A

2024


Region 1

Ruth Lake

Lake & Reservoir

1109.400301,1109.400302  /  18010102
  • Mercury
    • A Source Unknown

1075 Acres

2010

5A

2025


Region 1

Santa Rosa Hydrologic Subarea, Spring Lake (Santa Rosa Creek Reservoir)

Lake & Reservoir

1114.220201  / 
  • Mercury
    • A Source Unknown

72 Acres

2014

5A

2031


Region 1

Shastina, Lake

Lake & Reservoir

1105.500707,1105.500708  /  18010207
  • Mercury
    • A Source Unknown

1681 Acres

2010

5A

2021


Region 1

Smith River HU, Delilah Creek

River & Stream

1103.110003,1103.110004  / 
  • Copper
    • A Source Unknown

2.2 Miles

2014

5A

2032


Region 1

Smith River HU, Elk Creek

River & Stream

1103.110002,1103.110003  / 
  • Oxygen, Dissolved
    • A Source Unknown

3.2 Miles

2014

5A

2031


Region 1

Smith River HU, Martin Ranch Northwest, minor unnamed coastal stream

River & Stream

1103.110002,1103.110003  / 
  • Oxygen, Dissolved
    • A Source Unknown

1.4 Miles

2014

5A

2031


Region 1

Smith River HU, Tilas Slough

River & Stream

1103.110003  / 
  • Copper
    • A Source Unknown

1.6 Miles

2014

5A

2033


Region 1

Trinidad HU, Little River HA

River & Stream

1107.200302,1108.200001,1108.200002,1108.200003  /  18010102
  • Indicator Bacteria
    • A Source Unknown

85 Miles

2012

5A

2025
    This listing applies only to the mainstem of the Little River, which lies within the Trinidad HU, Little River HA water body.


Region 1

Trinidad State Beach

Coastal & Bay Shoreline

1108.100002  /  18010102
  • Indicator Bacteria
    • A Source Unknown

1.1 Miles

2006

5A

2022


Region 1

Trinity Lake (was Claire Engle Lake)

Lake & Reservoir

1106.400701,1106.400703,1106.400704,1106.400705,1106.400710,1106.400803,1106.400804,1106.400805,1106.400806,1106.400807,(Total Count: 16)  /  18010211
  • Mercury
    • A Source Unknown

15587 Acres

2006

5A

2019


Region 1

Trinity River HU, Lower Trinity HA

River & Stream

1106.110201,1106.110203,1106.110401,1106.110402,1106.130103,1106.140105,1106.150103,1106.150205,1106.150401,1106.150702  /  18010212
  • Aluminum
    • A Source Unknown

3931 Miles

2010

5A

2031
    This listing only applies to the mainstem Trinity River in the "Trinity River HU, Lower Trinity HA" waterbody.
  • Sedimentation/Siltation
    • Channel Erosion
    • Dam Construction
    • Drainage/Filling Of Wetlands
    • Erosion/Siltation
    • Flow Alteration/Regulation/Modification
    • Habitat Modification
    • Harvesting, Restoration, Residue Management
    • Hydromodification
    • Logging Road Construction/Maintenance
    • Mine Tailings
    • Natural Sources
    • Removal of Riparian Vegetation
    • Resource Extraction
    • Silvicultural Point Sources
    • Silviculture
    • Streambank Modification/Destabilization
    • Surface Mining
    • Upstream Impoundment

3931 Miles

1994

5B

2001
    This listing does not apply to the following water bodies, which lie within the Trinity River HU, Lower Trinity HA: the New River and its tributaries, Big French Creek and its tributaries, the North Fork Trinity River and its tributaries, including the East Fork North Fork Trinity River and its tributaries, and Manzanita Creek and its tributaries.


Region 1

Trinity River HU, South Fork HA

River & Stream

1106.210301,1106.230301,1106.230402,1106.230701,1106.250103,1106.250202,1106.250304,1106.250406,1106.250407,1106.250506  /  18010104
  • Boron
    • A Source Unknown

4201 Miles

2014

5A

2032
    This listing only applies to the South Fork Trinity River in the "Trinity River HU, South Fork HA" waterbody.
  • Sedimentation/Siltation
    • Flow Alteration/Regulation/Modification
    • Nonpoint Source
    • Range Grazing-Riparian
    • Removal of Riparian Vegetation
    • Silviculture
    • Streambank Modification/Destabilization

4201 Miles

1994

5B

2001
  • Temperature, water
    • Flow Alteration/Regulation/Modification
    • Removal of Riparian Vegetation

4201 Miles

2002

5A

2019


Region 1

Trinity River HU, Upper HA, Trinity River, East Fork

River & Stream

1106.400301,1106.400302,1106.400303,1106.400304,1106.400401,1106.400402,1106.400403,1106.400404,1106.400710  /  18010211
  • Mercury
    • A Source Unknown

331 Miles

2006

5A

2019
    The Trinity River HU, Upper HA, Trinity River, East Fork includes the following Calwater Super Planning Watersheds (SPWs): Mumbo Creek SPW 106.40030 and Blue Ridge SPW 106.40040.
  • Sedimentation/Siltation
    • Channel Erosion
    • Dam Construction
    • Flow Alteration/Regulation/Modification
    • Habitat Modification
    • Harvesting, Restoration, Residue Management
    • Hydromodification
    • Logging Road Construction/Maintenance
    • Mine Tailings
    • Natural Sources
    • Nonpoint Source
    • Placer Mining
    • Removal of Riparian Vegetation
    • Resource Extraction
    • Silviculture
    • Streambank Modification/Destabilization
    • Subsurface Mining

331 Miles

1994

5B

2001
    The Trinity River HU, Upper HA, Trinity River, East Fork includes the following Calwater Super Planning Watersheds (SPWs): Mumbo Creek SPW 106.40030 and Blue Ridge SPW 106.40040.


Region 1

Van Damme State Park (beach area)

Coastal & Bay Shoreline

1113.400004  /  18010108
  • Indicator Bacteria
    • A Source Unknown

0.52 Miles

2010

5A

2022


Region 2

Alameda Creek

River & Stream

2204.200400,2204.300409,2204.300501,2204.300502,2204.300503,2204.300507,2204.300508,2204.300802,2204.300803  /  18050003
  • Ammonia
    • A Source Unknown

41 Miles

2024

5A

2037
  • Diazinon
    • Other Urban Runoff
    • Surface Runoff

41 Miles

1998

5B

2007
    This listing was made by USEPA for the 1998 303(d) list. For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Oxygen, Dissolved
    • A Source Unknown

41 Miles

2024

5A

2037
    The 4 dissolved oxygen exceedances were at 3 stations in the lower flood control channel of Alameda Creek; therefore, this listing only applies to the lower section below Niles Canyon at Old Canyon Rd. crossing. This is an area approximately 6.8 miles long from Old Canyon Rd to Ardenwood Drive crossing, the lowest point of Alameda Creek according to the Integrated Report map).
  • Toxicity
    • A Source Unknown

41 Miles

2014

5A

2037


Region 2

Anderson Reservoir

Lake & Reservoir

2205.300501,2205.300502  /  18050003
  • Mercury
    • A Source Unknown

1022 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

1022 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Arroyo Las Positas

River & Stream

2204.300602, 2204.300900  /  18050004
  • Ammonia
    • A Source Unknown

15 Miles

2024

5A

2037
  • Chloride
    • A Source Unknown

15 Miles

2024

5A

2037
  • Diazinon
    • Urban Runoff/Storm Sewers

15 Miles

2002

5B

2007
    For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Eutrophication
    • A Source Unknown

15 Miles

2010

5A

2037
    This TMDL completion date was updated to 2037
  • Temperature, water
    • A Source Unknown

15 Miles

2010

5A

2037
  • pH
    • A Source Unknown

15 Miles

2024

5A

2037


Region 2

Arroyo Mocho

River & Stream

2204.300301,2204.300302,2204.300303,2204.300900  /  18050004
  • Diazinon
    • Urban Runoff/Storm Sewers

35 Miles

1998

5B

2007
    For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Eutrophication
    • A Source Unknown

35 Miles

2024

5A

2037
  • Temperature, water
    • A Source Unknown

35 Miles

2010

5A

2037
  • Toxicity
    • A Source Unknown

35 Miles

2010

5A

2037
  • pH
    • A Source Unknown

35 Miles

2010

5A

2037
    Elevated pH in Arroyo Mocho is likely due to nuisance algae growth. See listing decision for eutrophication (decision ID 154554).


Region 2

Arroyo Seco subwatershed (Alameda County, tributary to Arroyo Las Positas)

River & Stream

2204.300601, 2204.300604, 2204.300900  / 
  • Ammonia
    • A Source Unknown

14 Miles

2024

5A

2037
  • Toxicity
    • A Source Unknown

14 Miles

2024

5A

2037


Region 2

Belmont Creek (San Mateo)

River & Stream

2204.400303, 2204.400400  / 
  • Toxicity
    • A Source Unknown

4.1 Miles

2024

5A

2037


Region 2

Berryessa Creek subwatershed (Santa Clara County, tributary to Lower Penitencia Creek)

River & Stream

2205.300704, 2205.300800  /  18050003
  • Ammonia
    • A Source Unknown

15 Miles

2024

5A

2037


Region 2

Bon Tempe Reservoir

Lake & Reservoir

2201.130204  /  18050005
  • Mercury
    • A Source Unknown

121 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Briones Reservoir

Lake & Reservoir

2206.600101,2206.600105  /  18050002
  • Mercury
    • A Source Unknown

1076 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Calaveras Reservoir

Lake & Reservoir

2204.300408,2204.300409  /  18050004
  • Mercury
    • A Source Unknown

1503 Acres

2010

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Campbell Percolation Ponds

Lake & Reservoir

2205.400500  / 
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

36 Acres

2024

5A

2037


Region 2

Carquinez Strait

Estuary

2206.100000, 2206.500405, 2206.600202, 2207.100000, 2207.210301, 2207.330001, 2207.330002  /  18050001
  • Chlordane
    • A Source Unknown

526 Acres

2002

5A

2037
    This listing was made by USEPA. This TMDL completion date was updated to 2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

526 Acres

2002

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

526 Acres

1998

5A

2037
    This listing was originally made by USEPA. This TMDL completion date was updated to 2037
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

526 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

526 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6, 7,8,-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

526 Acres

1998

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • A Source Unknown

526 Acres

1996

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

526 Acres

1998

5B

2010
    This listing covers non dioxin-like PCBs. Interim health advisory for fish is in place.
  • PCBs (Polychlorinated biphenyls) (dioxin-like)
    • A Source Unknown

526 Acres

1998

5B

2010
    The specific dioxin like compounds are 3,4,4,5-TCB (81), 3,3,3,3-TCB (77), 3,3,4,4,5-PeCB (126), 3,3,4,4,4,4-HxCB (169), 2,3,3,4,4-PeCB (105), 2,3,4,4,5-PeCB (114), 2,3,4,4,5-PeCB (118), 2,3,4,4,5-PeCB (123), 2,3,3,4,4,5-HxCB (156), 2,3,3,4,4,5-HxCB (157), 2,3,4,4,5,5,-HxCB (167), 2,3,3,4,4,5,5-HpCB (189). This listing was made by USEPA.
  • Selenium
    • Exotic Species
    • Major Industrial Point Source
    • Natural Sources

526 Acres

1998

5B

2016


Region 2

Castro Valley Creek (Alameda)

River & Stream

2204.200203  / 
  • Fipronil
    • Other Urban Runoff
    • Surface Runoff

5 Miles

2024

5B

2007
  • Indicator Bacteria
    • A Source Unknown

5 Miles

2024

5A

2037
  • Toxicity
    • A Source Unknown
    • Other Urban Runoff
    • Surface Runoff

5 Miles

2024

5B

2007


Region 2

Central Basin, San Francisco (part of SF Bay, Lower)

Bay & Harbor

20440010  /  18050004
  • Chlordane
    • A Source Unknown

40 Acres

1998

5A

2037
    This listing was made by USEPA. This TMDL completion date was updated to 2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

40 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

40 Acres

1998

5A

2037
    This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

40 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

40 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6,7,8-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

40 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • Atmospheric Deposition
    • Industrial Point Sources
    • Minor Industrial Point Source
    • Municipal Point Sources
    • Natural Sources
    • Nonpoint Source
    • Resource Extraction

40 Acres

1992

5B

2008
    Current data indicate fish consumption and wildlife consumption impacted uses: health consumption advisory in effect for multiple fish species including striped bass and shark. Major source is historic: gold mining sediments and local mercury mining; most significant ongoing source is erosion and drainage from abandoned mines; moderate to low level inputs from point sources.
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • A Source Unknown

40 Acres

1800

5A

2037
    This TMDL completion date was updated to 2037.
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

40 Acres

1998

5B

2010
    This listing covers non dioxin-like PCBs. Interim health advisory for fish in place.
  • PCBs (Polychlorinated biphenyls) (dioxin-like)
    • A Source Unknown

40 Acres

1998

5B

2010
    The specific dioxin like compounds are 3,4,4,5-TCB (81), 3,3,3,3-TCB (77), 3,3,4,4,5-PeCB (126), 3,3,4,4,4,4-HxCB (169), 2,3,3,4,4-PeCB (105), 2,3,4,4,5-PeCB (114), 2,3,4,4,5-PeCB (118), 2,3,4,4,5-PeCB (123), 2,3,3,4,4,5-HxCB (156), 2,3,3,4,4,5-HxCB (157), 2,3,4,4,5,5,-HxCB (167), 2,3,3,4,4,5,5-HpCB (189). This listing was made by USEPA.
  • Selenium
    • A Source Unknown

40 Acres

1990

5A

2037
    Affected use is one branch of the food chain; most sensitive indicator is hatchability in nesting diving birds, significant contributions from oil refineries (control program in place) and agriculture (carried downstream by rivers); exotic species may have made food chain more susceptible to accumulation of selenium; health consumption advisory in effect for scaup and scoter (diving ducks). This TMDL completion date was updated to 2037.


Region 2

Codornices Creek

River & Stream

20330011  /  18050002
  • Temperature, water
    • A Source Unknown

2 Miles

2010

5A

2037
  • Toxicity
    • A Source Unknown

2 Miles

2010

5A

2037
  • Trash
    • A Source Unknown

2 Miles

2010

5C

2029


Region 2

Coyote Creek (Santa Clara Co.)

River & Stream

2205.100000, 2205.200003, 2205.300103, 2205.300201, 2205.300202, 2205.300301, 2205.300302, 2205.300501, 2205.300502, 2205.300800,(Total Count: 11)  /  18050003
  • Bifenthrin
    • Other Urban Runoff
    • Surface Runoff

58 Miles

2014

5B

2007
  • Cypermethrin
    • Other Urban Runoff
    • Surface Runoff

58 Miles

2014

5B

2007
  • Diazinon
    • A Source Unknown
    • Other Urban Runoff
    • Surface Runoff

58 Miles

1998

5B

2007
  • Mercury
    • A Source Unknown

58 Miles

2014

5B

2008
  • Oxygen, Dissolved
    • A Source Unknown

58 Miles

2014

5A

2037
  • Pyrethroids
    • Other Urban Runoff
    • Surface Runoff

58 Miles

2024

5B

2007
  • Toxicity
    • A Source Unknown

58 Miles

2014

5A

2037
    The impairment is based on sediment toxicity data.
  • Trash
    • A Source Unknown

58 Miles

2010

5C

2029


Region 2

Coyote Point County Park (San Francisco Bay, Lower)

Coastal & Bay Shoreline

20440021  /  18050004
  • Indicator Bacteria
    • A Source Unknown

0.57 Miles

2014

5A

2037


Region 2

Coyote Reservoir

Lake & Reservoir

20530032  /  18050003
  • Mercury
    • A Source Unknown

570 Acres

2014

5A

2037


Region 2

Del Valle Reservoir

Lake & Reservoir

2204.300203,2204.300204  /  18050004
  • Mercury
    • A Source Unknown

150 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

150 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Ellis Creek subwatershed (Sonoma County, tributary to Petaluma River)

River & Stream

2206.300101, 2206.300400  / 
  • Indicator Bacteria
    • A Source Unknown

5.8 Miles

2024

5B

2021
  • Oxygen, Dissolved
    • A Source Unknown

5.8 Miles

2024

5A

2037


Region 2

Encinal Beach (San Francisco Bay, Central)

Coastal & Bay Shoreline

2204.100000  /  18050004
  • Indicator Bacteria
    • A Source Unknown

0.08 Miles

2014

5A

2037


Region 2

Erckenbrack Park (San Mateo County)

Coastal & Bay Shoreline

2204.400400  / 
  • Indicator Bacteria
    • A Source Unknown

0.08 Miles

2024

5A

2037


Region 2

Frey Creek subwatershed (Sonoma County, tributary to Sonoma Creek)

River & Stream

2206.400101, 2206.400103  / 
  • Indicator Bacteria
    • See TMDL documentation

4 Miles

2024

5B

2008
  • Oxygen, Dissolved
    • A Source Unknown

4 Miles

2024

5A

2037


Region 2

Golden Hinde Beach

Coastal & Bay Shoreline

 /  18050005
  • Indicator Bacteria
    • A Source Unknown

0.13 Miles

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Guadalupe River

River & Stream

2205.300800,2205.400500,2205.500400  /  18050003
  • Bifenthrin
    • Other Urban Runoff
    • Surface Runoff

19 Miles

2014

5B

2007
  • Chlordane
    • A Source Unknown

19 Miles

2014

5A

2037
  • Diazinon
    • A Source Unknown
    • Other Urban Runoff
    • Surface Runoff

19 Miles

1998

5B

2007
    This listing was made by USEPA for the 1998 303(d) list. For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Mercury
    • A Source Unknown

19 Miles

1988

5B

2010
  • Pyrethroids
    • Other Urban Runoff
    • Surface Runoff

19 Miles

2024

5B

2007
  • Toxicity
    • Other Urban Runoff
    • Surface Runoff

19 Miles

2014

5B

2007
  • Trash
    • A Source Unknown

19 Miles

2010

5C

2029


Region 2

Guadalupe Slough

River & Stream

2205.500400  /  18050003
  • Toxicity
    • A Source Unknown

5.8 Miles

2014

5A

2037
    The impairment is based on water column toxicity data. This TMDL completion date was updated to 2037.


Region 2

Gull Park (San Mateo County)

Coastal & Bay Shoreline

2204.400400  / 
  • Indicator Bacteria
    • A Source Unknown

0.08 Miles

2024

5A

2037


Region 2

Henne, Lake

Lake & Reservoir

2206.500202  /  18050002
  • Mercury
    • A Source Unknown

17 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Hennessey Lake

Lake & Reservoir

 /  18050002
  • Mercury
    • A Source Unknown

763 Acres

2024

5A

2037


Region 2

Islais Creek Channel

Estuary

2204.100000,2204.400102  /  18050004
  • Ammonia
    • A Source Unknown

75 Acres

2002

5A

2037
    This TMDL completion date was updated to 2037
  • Chlordane
    • A Source Unknown

75 Acres

1800

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

75 Acres

1800

5A

2037
    This TMDL completion date was updated to 2037
  • Hydrogen Sulfide
    • A Source Unknown

75 Acres

2002

5A

2037
    This TMDL completion date was updated to 2037.
  • Indicator Bacteria
    • A Source Unknown

75 Acres

2024

5A

2037
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • A Source Unknown

75 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.
  • Toxicity
    • A Source Unknown

75 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Kirker Creek

River & Stream

2207.310102,2207.310300,2207.340100,2207.340200  /  18050001
  • Pyrethroids
    • Channelization
    • Surface Runoff
    • Urban Runoff--Erosion and Sedimentation

8 Miles

2010

5B

2007
  • Toxicity
    • A Source Unknown

8 Miles

2010

5A

2037
    This TMDL completion date was updated to 2037.
  • Trash
    • A Source Unknown

8 Miles

2010

5C

2029


Region 2

Kiteboard Beach (San Francisco Bay, Lower)

Coastal & Bay Shoreline

2204.100000,2204.400400  /  18050004
  • Indicator Bacteria
    • A Source Unknown

0.09 Miles

2014

5A

2037


Region 2

Lafayette Reservoir

Lake & Reservoir

2207.320102  /  18050001
  • Mercury
    • A Source Unknown

107 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

107 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Laguna Creek (Alameda County)

River & Stream

2205.200003  / 
  • Ammonia
    • A Source Unknown

5.6 Miles

2024

5A

2037


Region 2

Lagunitas Creek

River & Stream

2201.110000,2201.120302,2201.130201,2201.130203,2201.130204,2201.130204,2201.130301  /  18050005
  • Indicator Bacteria
    • A Source Unknown

1.8 Miles

2024

5B

2007
  • Nutrients
    • A Source Unknown

1.8 Miles

1996

5A

2037
    Tributary to Tomales Bay. TMDLs will be developed as part of evolving watershed management effort. Additional monitoring and assessment needed. This TMDL completion date was updated to 2037.
  • Pathogens
    • A Source Unknown

1.8 Miles

1992

5B

2007
  • Sedimentation/Siltation
    • A Source Unknown

1.8 Miles

1996

5B

2016
    Tributary to Tomales Bay. TMDLs will be developed as part of evolving watershed management effort. Additional monitoring and assessment needed.


Region 2

Lake Chabot (Alameda Co)

Lake & Reservoir

2204.200300  /  18050004
  • Chlordane
    • A Source Unknown

308 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

308 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

308 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037
  • Mercury
    • A Source Unknown

308 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

308 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Lake Chabot (Solano Co)

Lake & Reservoir

2206.500405  /  18050002
  • Mercury
    • A Source Unknown

98 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Lake Herman

Lake & Reservoir

2207.210301,2207.210302  /  18050001
  • Mercury
    • A Source Unknown

107 Acres

1992

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Lake Merced

Lake & Reservoir

2202.100000  /  18050006
  • Oxygen, Dissolved
    • A Source Unknown

308 Acres

2014

5A

2037
    This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • pH
    • A Source Unknown

308 Acres

2002

5A

2037
    This listing was made by USEPA. This TMDL completion date was updated to 2037.


Region 2

Lake Merritt

Lake & Reservoir

2204.200400  /  18050004
  • Oxygen, Dissolved
    • A Source Unknown

148 Acres

2024

5A

2037
  • Trash
    • A Source Unknown

148 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Lake Temescal

Lake & Reservoir

 /  18050002
  • Mercury
    • A Source Unknown

9.4 Acres

2024

5A

2037


Region 2

Las Trampas Creek subwatershed (Contra Costa County, tributary to Walnut Creek)

River & Stream

2207.320101, 2207.320102, 2207.320202  /  18050001
  • Toxicity
    • A Source Unknown

18 Miles

2024

5A

2037


Region 2

Laurel Creek (San Mateo County)

River & Stream

2204.400303, 2204.400400  /  18050004
  • Bifenthrin
    • Other Urban Runoff
    • Surface Runoff

5.4 Miles

2024

5B

2007
  • Diazinon
    • A Source Unknown

5.4 Miles

1998

5B

2007
    This listing was made by USEPA for the 1998 303(d) list. For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Pyrethroids
    • Other Urban Runoff
    • Surface Runoff

5.4 Miles

2024

5B

2007
  • Toxicity
    • A Source Unknown

5.4 Miles

2024

5A

2037


Region 2

Laurel Creek (Solano County)

River & Stream

2207.230101, 2207.230200  /  18050001
  • Bifenthrin
    • Other Urban Runoff
    • Surface Runoff

8.4 Miles

2014

5B

2007
  • Oxygen, Dissolved
    • A Source Unknown
    • Agricultural Water Diversion

8.4 Miles

2024

5A

2037
  • Toxicity
    • Other Urban Runoff
    • Surface Runoff

8.4 Miles

2014

5B

2007


Region 2

Lexington Reservoir

Lake & Reservoir

20540020  /  18050003
  • Mercury
    • A Source Unknown

350 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Lichau Creek (Sonoma County)

River & Stream

2206.300103, 2206.300400  / 
  • Indicator Bacteria
    • A Source Unknown
    • Agriculture

7.8 Miles

2024

5B

2021
  • Oxygen, Dissolved
    • A Source Unknown

7.8 Miles

2024

5A

2037


Region 2

Los Gatos Creek, Lower

River & Stream

2205.400201,2205.400202,2205.400500  / 
  • Temperature, water
    • A Source Unknown

12 Miles

2014

5A

2037
    Lower Los Gatos Creek is the portion of the waterbody downstream of Lexington Reservoir.


Region 2

Lower Crystal Springs Reservoir

Lake & Reservoir

2204.400302,2204.400303  /  18050004
  • Mercury
    • A Source Unknown

583 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Lynch Creek subwatershed (Sonoma County, tributary to Petaluma River)

River & Stream

2206.300103, 2206.300400  / 
  • Indicator Bacteria
    • A Source Unknown

7.7 Miles

2024

5B

2021
  • Oxygen, Dissolved
    • A Source Unknown

7.7 Miles

2024

5A

2037


Region 2

Marlin Park

Coastal & Bay Shoreline

2204.400400  / 
  • Indicator Bacteria
    • A Source Unknown

0.09 Miles

2024

5A

2037


Region 2

Mission Creek Channel

Estuary

2204.400102  /  18050004
  • Ammonia
    • A Source Unknown

27 Acres

2002

5A

2037
    This TMDL completion date was updated to 2037
  • Chlordane
    • A Source Unknown

27 Acres

1800

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

27 Acres

1800

5A

2037
    This TMDL completion date was updated to 2037
  • Hydrogen Sulfide
    • A Source Unknown

27 Acres

2002

5A

2037
    This TMDL completion date was updated to 2037
  • Indicator Bacteria
    • A Source Unknown

27 Acres

2024

5A

2037
  • Lead
    • A Source Unknown

27 Acres

1800

5A

2037
    This TMDL completion date was updated to 2037
  • Mercury
    • A Source Unknown

27 Acres

2002

5A

2037
    This TMDL completion date was updated to 2037
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • A Source Unknown

27 Acres

2002

5A

2037
    This TMDL completion date was updated to 2037
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

27 Acres

1800

5B

2010
  • Silver
    • A Source Unknown

27 Acres

1800

5A

2037
    This TMDL completion date was updated to 2037
  • Zinc
    • A Source Unknown

27 Acres

1800

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Moraga Creek (Contra Costa County)

River & Stream

2204.200101, 2204.200103, 2206.600105  /  18050004
  • Toxicity
    • A Source Unknown

6.1 Miles

2024

5A

2037


Region 2

Mt. Diablo Creek

River & Stream

2207.310102,2207.310103,2207.310104  /  18050001
  • Diazinon
    • A Source Unknown

14 Miles

1998

5B

2007
    This listing was made by USEPA for the 1998 303(d) list. For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Toxicity
    • A Source Unknown

14 Miles

2010

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Napa River, Mare Island Strait

River & Stream

2206.100000  / 
  • Chlordane
    • A Source Unknown

3.8 Miles

2014

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

3.8 Miles

2014

5A

2037
    This TMDL completion date was updated to 2037
  • Mercury
    • A Source Unknown

3.8 Miles

2014

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

3.8 Miles

2014

5B

2010
  • Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
    • A Source Unknown

3.8 Miles

2016

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Napa River, tidal

River & Stream

2206.100000,2206.500405  / 
  • Indicator Bacteria
    • A Source Unknown

23 Miles

2024

5B

2006
  • Nutrients
    • Agriculture
    • Onsite Wastewater Systems (Septic Tanks)

23 Miles

2014

5A

2037
    This TMDL completion date was updated to 2037.
  • Pathogens
    • Agriculture
    • Onsite Wastewater Systems (Septic Tanks)

23 Miles

2014

5B

2001


Region 2

Nathanson Creek subwatershed (Sonoma County, tributary to Sonoma Creek)

River & Stream

2206.400201, 2206.400202  / 
  • Fipronil
    • Other Urban Runoff
    • Surface Runoff

9.5 Miles

2024

5B

2007
  • Indicator Bacteria
    • A Source Unknown

9.5 Miles

2024

5B

2008
  • Oxygen, Dissolved
    • A Source Unknown

9.5 Miles

2024

5A

2037
  • Pyrethroids
    • Other Urban Runoff
    • Surface Runoff

9.5 Miles

2024

5B

2007


Region 2

Nicasio Reservoir

Lake & Reservoir

 /  18050005
  • Mercury
    • A Source Unknown

862 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Oakland Inner Harbor

Bay & Harbor

2204.200400  / 
  • Indicator Bacteria
    • A Source Unknown

448 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Oakland Inner Harbor (Fruitvale Site, part of SF Bay, Lower)

Bay & Harbor

2204.200400  /  18050004
  • Chlordane
    • A Source Unknown

0.14 Acres

1998

5A

2037
    This listing was made by USEPA. This TMDL completion date was updated to 2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

0.14 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

0.14 Acres

1998

5A

2037
    This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

0.14 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

0.14 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6,7,8-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

0.14 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • A Source Unknown

0.14 Acres

1992

5B

2008
    Current data indicate fish consumption and wildlife consumption impacted uses: health consumption advisory in effect for multiple fish species including striped bass and shark. Major source is historic: gold mining sediments and local mercury mining; most significant ongoing source is erosion and drainage from abandoned mines; moderate to low level inputs from point sources.
  • PCBs (Polychlorinated biphenyls) (sediment)
    • A Source Unknown

0.14 Acres

2016

5B

2010
    This listing covers non dioxin-like PCBs. Interim health advisory for fish; uncertainty regarding water column concentration data.
  • Selenium
    • A Source Unknown

0.14 Acres

1990

5A

2037
    Affected use is one branch of the food chain; most sensitive indicator is hatchability in nesting diving birds, significant contributions from oil refineries (control program in place) and agriculture (carried downstream by rivers); exotic species may have made food chain more susceptible to accumulation of selenium; health consumption advisory in effect for scaup and scoter (diving ducks). This TMDL completion date was updated to 2037.
  • Toxicity
    • A Source Unknown

0.14 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Oakland Inner Harbor (Pacific Dry-dock Yard 1 Site, part of SF Bay, Lower)

Bay & Harbor

2204.100000, 2204.200400  /  18050004
  • Chlordane
    • A Source Unknown

0.26 Acres

1998

5A

2037
    This listing was made by USEPA.
  • Copper
    • A Source Unknown

0.26 Acres

1800

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

0.26 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

0.26 Acres

1998

5A

2037
    This listing was made by USEPA.
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

0.26 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

0.26 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6,7,8-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

0.26 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Lead
    • A Source Unknown

0.26 Acres

1800

5A

2037
  • Mercury
    • A Source Unknown

0.26 Acres

1992

5B

2008
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • A Source Unknown

0.26 Acres

1800

5A

2037
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

0.26 Acres

1998

5B

2010
    This listing covers non dioxin-like PCBs. Interim health advisory for fish; uncertainty regarding water column concentration data.
  • Selenium
    • A Source Unknown

0.26 Acres

1990

5A

2037
    Affected use is one branch of the food chain; most sensitive indicator is hatchability in nesting diving birds, significant contributions from oil refineries (control program in place) and agriculture (carried downstream by rivers); exotic species may have made food chain more susceptible to accumulation of selenium; health consumption advisory in effect for scaup and scoter (diving ducks). This TMDL completion date was updated to 2037.
  • Zinc
    • A Source Unknown

0.26 Acres

1800

5A

2037


Region 2

Oiger Ponds

Lake & Reservoir

2205.300501  /  18050003
  • Mercury
    • A Source Unknown

128 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Oyster Point Marina (San Francisco Bay, Lower)

Coastal & Bay Shoreline

2204.100000,2204.400202  /  18050004
  • Indicator Bacteria
    • A Source Unknown

0.31 Miles

2014

5A

2037


Region 2

Pacific Ocean Montara State Beach

Coastal & Bay Shoreline

2202.210001,2202.210002,2202.220003  /  18050006
  • Indicator Bacteria
    • A Source Unknown

0.81 Miles

2014

5A

2037


Region 2

Pacific Ocean at Agate Beach (Marin County)

Coastal & Bay Shoreline

2201.300001, 2201.300001, 2201.300002, 2201.300005  / 
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • A Source Unknown

0.36 Miles

2024

5A

2037


Region 2

Pacific Ocean at Baker Beach

Coastal & Bay Shoreline

2201.300004,2202.100000,2203.100000,2203.200202,2203.400000,2204.400102  /  18050002
  • Indicator Bacteria
    • A Source Unknown

1.1 Miles

2006

5A

2037


Region 2

Pacific Ocean at Pillar Point

Coastal & Bay Shoreline

2202.210002  /  18050006
  • Mercury
    • A Source Unknown

0.63 Miles

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Paradise Cove Beach (San Francisco Bay, Central)

Coastal & Bay Shoreline

2203.100000,2203.200201  /  18050002
  • Indicator Bacteria
    • A Source Unknown

0.16 Miles

2014

5A

2037


Region 2

Permanente Creek

River & Stream

2205.500201,2205.500400  /  18050003
  • Diazinon
    • Urban Runoff/Storm Sewers

14 Miles

1998

5B

2007
    This listing was made by USEPA for the 1998 303(d) list. For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Selenium
    • A Source Unknown

14 Miles

2014

5A

2037
  • Toxicity
    • A Source Unknown

14 Miles

2010

5A

2037
  • Trash
    • A Source Unknown

14 Miles

2010

5C

2029


Region 2

Petaluma River

River & Stream

2206.300200,2206.300400  /  18050002
  • Diazinon
    • Other Urban Runoff
    • Surface Runoff

22 Miles

2002

5B

2007
    Data source: Abelli-Amen, Petaluma Tree Planters, 1999.
  • Fipronil
    • Other Urban Runoff
    • Surface Runoff

22 Miles

2024

5B

2007
  • Indicator Bacteria
    • Onsite Wastewater Systems (Septic Tanks)

22 Miles

2024

5B

2021
  • Nutrients
    • A Source Unknown

22 Miles

1998

5A

2037
    TMDL will be developed as part of ongoing watershed management effort. Additional monitoring and assessment needed. This TMDL completion date was updated to 2037.
  • Oxygen, Dissolved
    • A Source Unknown

22 Miles

2014

5A

2037
  • Sediment
    • A Source Unknown

22 Miles

2024

5A

2037
  • Trash
    • A Source Unknown

22 Miles

2010

5C

2029


Region 2

Petaluma River (tidal portion)

River & Stream

2206.300400  /  18050002
  • Diazinon
    • A Source Unknown

1.8 Miles

2002

5A

2037
    This TMDL completion date was updated to 2037
  • Indicator Bacteria
    • Onsite Wastewater Systems (Septic Tanks)

1.8 Miles

2024

5B

2021
  • Nickel
    • A Source Unknown

1.8 Miles

2002

5A

2037
    Exceedance of California Toxic Rule dissolved criteria and National Toxic Rule total criteria; elevated water and sediment tissue levels. This TMDL completion date was updated to 2037.
  • Nutrients
    • A Source Unknown

1.8 Miles

2002

5A

2037
    TMDL will be developed as part of ongoing watershed management effort. Additional monitoring and assessment needed. This TMDL completion date was updated to 2037.


Region 2

Pilarcitos Creek (below Pilarcitos Reservoir)

River & Stream

 /  18050006
  • Toxicity
    • A Source Unknown

11 Miles

2024

5A

2037


Region 2

Pilarcitos Lake

Lake & Reservoir

2202.220003  /  18050006
  • Mercury
    • A Source Unknown

97 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Pomponio Creek

River & Stream

2202.400200  /  18050006
  • Indicator Bacteria
    • A Source Unknown

7 Miles

2014

5A

2037


Region 2

Richardson Bay

Bay & Harbor

2203.100000,2203.200201,2203.200202  /  18050002
  • Chlordane
    • A Source Unknown

3855 Acres

1998

5A

2037
    This listing was made by USEPA. This TMDL completion date was updated to 2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

3855 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

3855 Acres

1998

5A

2037
    This listing was made by USEPA.
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

3855 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

3855 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6, 7,8,-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Indicator Bacteria
    • A Source Unknown
    • Boat Discharges/Vessel Wastes
    • Marinas and Recreational Boating

3855 Acres

2014

5B

2009
  • Invasive Species
    • A Source Unknown

3855 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • A Source Unknown

3855 Acres

1992

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

3855 Acres

1998

5B

2010
    This listing covers non dioxin-like PCBs. Interim health advisory for fish in place.
  • PCBs (Polychlorinated biphenyls) (dioxin-like)
    • A Source Unknown

3855 Acres

1998

5B

2010
    The specific dioxin like compounds are 3,4,4,5-TCB (81), 3,3,3,3-TCB (77), 3,3,4,4,5-PeCB (126), 3,3,4,4,4,4-HxCB (169), 2,3,3,4,4-PeCB (105), 2,3,4,4,5-PeCB (114), 2,3,4,4,5-PeCB (118), 2,3,4,4,5-PeCB (123), 2,3,3,4,4,5-HxCB (156), 2,3,3,4,4,5-HxCB (157), 2,3,4,4,5,5,-HxCB (167), 2,3,3,4,4,5,5-HpCB (189). This listing was made by USEPA.


Region 2

Sacramento San Joaquin Delta

Estuary

2207.250000, 2207.260000, 2207.340100, 2207.340200, 2207.400100, 2207.400200, 5510.000000, 6544.000000  /  18050001
  • Chlordane
    • A Source Unknown

582 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

582 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

582 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

582 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

582 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6, 7,8,-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

582 Acres

1998

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • A Source Unknown

582 Acres

1998

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

582 Acres

1998

5B

2010
    This listing covers non dioxin-like PCBs.Interim health advisory for fish.
  • PCBs (Polychlorinated biphenyls) (dioxin-like)
    • A Source Unknown

582 Acres

1998

5B

2010
    The specific dioxin like compounds are 3,4,4,5-TCB (81), 3,3,3,3-TCB (77), 3,3,4,4,5-PeCB (126), 3,3,4,4,4,4-HxCB (169), 2,3,3,4,4-PeCB (105), 2,3,4,4,5-PeCB (114), 2,3,4,4,5-PeCB (118), 2,3,4,4,5-PeCB (123), 2,3,3,4,4,5-HxCB (156), 2,3,3,4,4,5-HxCB (157), 2,3,4,4,5,5,-HxCB (167), 2,3,3,4,4,5,5-HpCB (189). This listing was made by USEPA.
  • Selenium
    • A Source Unknown

582 Acres

1998

5B

2016


Region 2

San Antonio Creek (Marin/Sonoma Co)

River & Stream

2206.300301,2206.300302,2206.300400,2206.300500  /  18050002
  • Diazinon
    • Urban Runoff/Storm Sewers

17 Miles

1998

5B

2007
    This listing was made by USEPA for the 1998 303(d) list. For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Indicator Bacteria
    • Onsite Wastewater Systems (Septic Tanks)

17 Miles

2024

5B

2021
  • Oxygen, Dissolved
    • A Source Unknown

17 Miles

2014

5A

2037


Region 2

San Francisco Bay, Central

Bay & Harbor

2201.300004,2202.100000,2203.100000,2203.200101,2203.200102,2203.200201,2203.200202,2203.300001,2203.400000,2204.100000,(Total Count: 13)  /  18050004
  • Chlordane
    • A Source Unknown

113105 Acres

1998

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

113105 Acres

1998

5A

2037
  • Dieldrin
    • A Source Unknown

113105 Acres

1998

5A

2037
    This listing was made by USEPA.
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

113105 Acres

1998

5A

2019
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

113105 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6,7,8-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

113105 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • Atmospheric Deposition
    • Industrial Point Sources
    • Municipal Point Sources
    • Natural Sources
    • Nonpoint Source
    • Resource Extraction

113105 Acres

1992

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

113105 Acres

1998

5B

2010
    This listing covers non dioxin-like PCBs.
  • PCBs (Polychlorinated biphenyls) (dioxin-like)
    • A Source Unknown

113105 Acres

1998

5B

2010
    The specific dioxin like compounds are 3,4,4,5-TCB (81), 3,3,3,3-TCB (77), 3,3,4,4,5-PeCB (126), 3,3,4,4,4,4-HxCB (169), 2,3,3,4,4-PeCB (105), 2,3,4,4,5-PeCB (114), 2,3,4,4,5-PeCB (118), 2,3,4,4,5-PeCB (123), 2,3,3,4,4,5-HxCB (156), 2,3,3,4,4,5-HxCB (157), 2,3,4,4,5,5,-HxCB (167), 2,3,3,4,4,5,5-HpCB (189). This listing was made by USEPA.
  • Selenium
    • Major Industrial Point Source
    • See TMDL documentation

113105 Acres

1990

5B

2016
  • Trash
    • A Source Unknown

113105 Acres

2010

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

San Francisco Bay, Lower

Bay & Harbor

2204.100000,2204.200400,2204.400101,2204.400102,2204.400201,2204.400202,2204.400400,2205.100000,2205.200003  /  18050004
  • Chlordane
    • A Source Unknown

147374 Acres

1998

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

147374 Acres

1998

5A

2037
  • Dieldrin
    • A Source Unknown

147374 Acres

1998

5A

2037
    This listing was made by USEPA.
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

147374 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

147374 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6, 7,8,-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

147374 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • A Source Unknown

147374 Acres

1992

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

147374 Acres

1998

5B

2010
    This listing covers non dioxin-like PCBs. Interim health advisory for fish in place.
  • PCBs (Polychlorinated biphenyls) (dioxin-like)
    • A Source Unknown

147374 Acres

1998

5B

2010
    The specific dioxin like compounds are 3,4,4,5-TCB (81), 3,3,3,3-TCB (77), 3,3,4,4,5-PeCB (126), 3,3,4,4,4,4-HxCB (169), 2,3,3,4,4-PeCB (105), 2,3,4,4,5-PeCB (114), 2,3,4,4,5-PeCB (118), 2,3,4,4,5-PeCB (123), 2,3,3,4,4,5-HxCB (156), 2,3,3,4,4,5-HxCB (157), 2,3,4,4,5,5,-HxCB (167), 2,3,3,4,4,5,5-HpCB (189). This listing was made by USEPA.
  • Trash
    • A Source Unknown

147374 Acres

2010

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

San Francisco Bay, South

Bay & Harbor

2204.100000, 2205.100000, 2205.200003, 2205.500400  /  18050003
  • Chlordane
    • A Source Unknown

1360 Acres

1990

5A

2037
    This listing was made by USEPA.
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

1360 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

1360 Acres

1998

5A

2037
    This listing was made by USEPA.
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

1360 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

1360 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6,7,8-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

1360 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • A Source Unknown

1360 Acres

1992

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

1360 Acres

1992

5B

2010
  • PCBs (Polychlorinated biphenyls) (dioxin-like)
    • A Source Unknown

1360 Acres

1992

5B

2010
    The specific dioxin like compounds are 3,4,4,5-TCB (81), 3,3,3,3-TCB (77), 3,3,4,4,5-PeCB (126), 3,3,4,4,4,4-HxCB (169), 2,3,3,4,4-PeCB (105), 2,3,4,4,5-PeCB (114), 2,3,4,4,5-PeCB (118), 2,3,4,4,5-PeCB (123), 2,3,3,4,4,5-HxCB (156), 2,3,3,4,4,5-HxCB (157), 2,3,4,4,5,5,-HxCB (167), 2,3,3,4,4,5,5-HpCB (189). This listing was made by USEPA.
  • Selenium
    • A Source Unknown

1360 Acres

1998

5A

2037


Region 2

San Geronimo Creek (Marin)

River & Stream

2201.130202, 2201.130203  / 
  • Indicator Bacteria
    • See TMDL documentation

5.2 Miles

2024

5B

2007
  • Oxygen, Dissolved
    • A Source Unknown

5.2 Miles

2024

5A

2037


Region 2

San Gregorio Creek (San Mateo County)

River & Stream

2202.230001, 2202.230002, 2202.300002, 2202.300004, 2202.300004, 2202.400105, 2202.400200  /  18050006
  • Indicator Bacteria
    • A Source Unknown

11 Miles

2014

5A

2037
    A Water Quality Improvement Plan (Plan) has been developed to restore water quality by improving sediment and habitat conditions in San Gregorio Creek. The Plan examines the water quality problem, identifies sources of sediment contamination, and specifies actions to improve water quality. This plan will help with the portion of the pathogen loading coming from grazing. Moreover, Water Board staff are working on septic issues through San Mateo County's Local Area Management Plans for onsite wastewater treatement systems.
  • Sediment
    • Agriculture-grazing
    • Highway/Road/Bridge Construction
    • Land Development
    • Logging Road Construction/Maintenance
    • Water Diversions

11 Miles

2024

5C

2041


Region 2

San Leandro Bay (part of SF Bay, Lower)

Bay & Harbor

2204.100000, 2204.200400  /  18050004
  • Chlordane
    • A Source Unknown

88 Acres

1998

5A

2037
    This listing was made by USEPA. This TMDL completion date was updated to 2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

88 Acres

1800

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

88 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

88 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

88 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6,7,8-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

88 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Lead
    • A Source Unknown

88 Acres

1800

5A

2037
  • Mercury
    • A Source Unknown

88 Acres

1992

5B

2008
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • A Source Unknown

88 Acres

1800

5A

2037
  • PCBs (Polychlorinated biphenyls)
    • Other Urban Runoff

88 Acres

2024

5B

2010
  • Zinc
    • A Source Unknown

88 Acres

1800

5A

2037


Region 2

San Leandro Creek, Lower

River & Stream

2204.200101,2204.200102,2204.200300,2204.200400  /  18050004
  • Chlordane
    • A Source Unknown

11 Miles

2010

5A

2037
  • Diazinon
    • Other Urban Runoff
    • Surface Runoff

11 Miles

1998

5B

2007
  • Pyrethroids
    • Other Urban Runoff
    • Surface Runoff

11 Miles

2024

5B

2007
  • Toxicity
    • Other Urban Runoff
    • Surface Runoff

11 Miles

2010

5B

2007
  • Trash
    • A Source Unknown

11 Miles

2010

5C

2029


Region 2

San Mateo Creek, Lower

River & Stream

2204.400201,2204.400303,2204.400400  /  18050004
  • Chlordane
    • A Source Unknown

7.4 Miles

2010

5A

2037
  • Indicator Bacteria
    • A Source Unknown

7.4 Miles

2024

5A

2037
  • Pyrethroids
    • Other Urban Runoff
    • Surface Runoff

7.4 Miles

2024

5B

2007
  • Toxicity
    • A Source Unknown

7.4 Miles

2010

5A

2037
    This waterbody was already listed for sediment toxicity in a previous listing round. Thus, this is not a new listing. The previous decision field is in error because it is referring to the previous decision for water toxicity. Now that water and sediment toxicity are combined, the current listing will be for toxicity, but it is important to keep in mind that the toxicity is for the sediment compartment.


Region 2

San Pablo Bay

Bay & Harbor

2206.100000,2206.200003,2206.300400,2206.400201,2206.500405,2206.600104,2206.600201,2206.600202  /  18050002
  • Chlordane
    • A Source Unknown

110423 Acres

1998

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

110423 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

110423 Acres

1998

5A

2037
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

110423 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

110423 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6, 7,8,-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

110423 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • A Source Unknown

110423 Acres

1990

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

110423 Acres

1998

5B

2010
  • PCBs (Polychlorinated biphenyls) (dioxin-like)
    • A Source Unknown

110423 Acres

1998

5B

2010
    The specific dioxin like compounds are 3,4,4,5-TCB (81), 3,3,3,3-TCB (77), 3,3,4,4,5-PeCB (126), 3,3,4,4,4,4-HxCB (169), 2,3,3,4,4-PeCB (105), 2,3,4,4,5-PeCB (114), 2,3,4,4,5-PeCB (118), 2,3,4,4,5-PeCB (123), 2,3,3,4,4,5-HxCB (156), 2,3,3,4,4,5-HxCB (157), 2,3,4,4,5,5,-HxCB (167), 2,3,3,4,4,5,5-HpCB (189). This listing was made by USEPA.
  • Selenium
    • A Source Unknown
    • See TMDL documentation

110423 Acres

1990

5B

2016


Region 2

San Pablo Reservoir

Lake & Reservoir

2206.600102  /  18050002
  • Chlordane
    • A Source Unknown

785 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

785 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037
  • Heptachlor epoxide
    • A Source Unknown

785 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.
  • Mercury
    • A Source Unknown

785 Acres

2002

5A

2037
    This TMDL completion date was updated to 2037.
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

785 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.
  • Toxaphene
    • A Source Unknown

785 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

San Tomas Aquinas Creek (Santa Clara County)

River & Stream

2205.500400,2205.500500  /  18050003
  • Toxicity
    • A Source Unknown

18 Miles

2024

5A

2037
  • Trash
    • A Source Unknown

18 Miles

2010

5C

2029


Region 2

Saratoga Creek

River & Stream

2205.500400,2205.500500  /  18050003
  • Ammonia
    • A Source Unknown

19 Miles

2024

5A

2037
  • Diazinon
    • A Source Unknown

19 Miles

1998

5B

2007
    This listing was made by USEPA for the 1998 303(d) list. For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Toxicity
    • A Source Unknown

19 Miles

2024

5A

2037
  • Trash
    • A Source Unknown

19 Miles

2010

5C

2029


Region 2

Schell Creek (Sonoma County)

River & Stream

2206.400201  /  18050002
  • Indicator Bacteria
    • Onsite Wastewater Systems (Septic Tanks)

4.5 Miles

2024

5B

2008
  • Oxygen, Dissolved
    • A Source Unknown

4.5 Miles

2024

5A

2037


Region 2

Shadow Cliffs Reservoir

Lake & Reservoir

2204.300900  /  18050004
  • Mercury
    • A Source Unknown

143 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

143 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Sonoma Creek, tidal

River & Stream

2206.400201  / 
  • Nutrients
    • Agriculture
    • Onsite Wastewater Systems (Septic Tanks)

9.9 Miles

2014

5A

2037
    This TMDL completion date was updated to 2037.
  • Pathogens
    • Onsite Wastewater Systems (Septic Tanks)

9.9 Miles

2014

5B

2008


Region 2

Soulajule Reservoir

Lake & Reservoir

2201.120102  /  18050005
  • Mercury
    • Mine Tailings

49 Acres

2006

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • Atmospheric Deposition

49 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

South San Ramon Creek subwatershed (Contra Costa and Alameda counties, Tributary to Arroyo de la Laguna)

River & Stream

2204.300704, 2204.300705, 2204.300706, 2204.300801, 2204.300806, 2204.300900  / 
  • Ammonia
    • A Source Unknown

36 Miles

2024

5A

2037
  • Bifenthrin
    • Other Urban Runoff
    • Surface Runoff

36 Miles

2024

5B

2007
  • Cyfluthrin
    • Other Urban Runoff
    • Surface Runoff

36 Miles

2024

5B

2007
  • Imidacloprid
    • Other Urban Runoff
    • Surface Runoff

36 Miles

2024

5B

2007
  • Pyrethroids
    • Other Urban Runoff
    • Surface Runoff

36 Miles

2024

5B

2007


Region 2

Stevens Creek

River & Stream

2205.500301,2205.500302,2205.500400  /  18050003
  • Aluminum
    • A Source Unknown

21 Miles

2024

5A

2037
  • Diazinon
    • A Source Unknown
    • Other Urban Runoff
    • Surface Runoff

21 Miles

1998

5B

2007
    This listing was made by USEPA for the 1998 303(d) list. For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Temperature, water
    • A Source Unknown

21 Miles

2010

5A

2037
  • Toxicity
    • A Source Unknown

21 Miles

2006

5A

2037
  • Trash
    • A Source Unknown

21 Miles

2010

5C

2029
  • Turbidity
    • A Source Unknown

21 Miles

2024

5A

2037


Region 2

Stevens Creek Reservoir

Lake & Reservoir

 /  18050003
  • Chlordane
    • A Source Unknown

83 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

83 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037
  • Mercury
    • A Source Unknown

83 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

83 Acres

2006

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Suisun Bay

Bay & Harbor

2207.100000, 2207.210400, 2207.230200, 2207.240000, 2207.250000, 2207.310104, 2207.340100, 2207.400200  /  18050001
  • Chlordane
    • Agriculture

3806 Acres

1998

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

3806 Acres

1998

5A

2037
    This TMDL completion date was updated to 2037
  • Dieldrin
    • A Source Unknown

3806 Acres

1998

5A

2037
    This listing was made by USEPA.
  • Dioxin compounds (including 2,3,7,8-TCDD)
    • A Source Unknown

3806 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,6,7,8-HxCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,4,6,7,8-HpCDD, and OCDD. This listing was made by USEPA. This TMDL completion date was updated to 2037
  • Furan Compounds
    • A Source Unknown

3806 Acres

1998

5A

2037
    The specific compounds are 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 2,3,4,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,6,7,8-HxCDF, 1,2,3,7,8,9-HxCDF, 2,3,4,6,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8,9-HpCDF, and OCDF. This listing was made by USEPA. This TMDL completion date was updated to 2037.
  • Invasive Species
    • A Source Unknown

3806 Acres

2006

5A

2037
    Disrupt natural benthos; change pollutant availability in food chain; disrupt food availability to native species. This TMDL completion date was updated to 2037.
  • Mercury
    • A Source Unknown

3806 Acres

1990

5B

2008
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

3806 Acres

1998

5B

2010
    This listing covers non-dioxin-like PCBs. Interim health advisory for fish in place.
  • PCBs (Polychlorinated biphenyls) (dioxin-like)
    • A Source Unknown

3806 Acres

1998

5B

2010
    The specific dioxin-like compounds are 3,4,4,5-TCB (81), 3,3,3,3-TCB (77), 3,3,4,4,5-PeCB (126), 3,3,4,4,4,4-HxCB (169), 2,3,3,4,4-PeCB (105), 2,3,4,4,5-PeCB (114), 2,3,4,4,5-PeCB (118), 2,3,4,4,5-PeCB (123), 2,3,3,4,4,5-HxCB (156), 2,3,3,4,4,5-HxCB (157), 2,3,4,4,5,5-HxCB (167), 2,3,3,4,4,5,5-HpCB (189). This listing was made by USEPA.
  • Selenium
    • See TMDL documentation

3806 Acres

1990

5B

2016


Region 2

Suisun Creek

River & Stream

2207.210400, 2207.220001, 2207.220002, 2207.220003, 2207.230200  /  18050001
  • Oxygen, Dissolved
    • A Source Unknown

23 Miles

2014

5A

2037
  • Temperature, water
    • A Source Unknown

23 Miles

2010

5A

2037


Region 2

Suisun Marsh Wetlands

Wetland, Tidal

2207.100000, 2207.210301, 2207.210400, 2207.230200, 2207.240000, 2207.250000, 2207.260000  /  18050001
  • Mercury
    • Historic Land Management Activities

66339 Acres

2010

5B

2018
  • Nutrients
    • A Source Unknown

66339 Acres

1996

5A

2037
    Additional monitoring and assessment needed. This TMDL completion date was updated to 2037.
  • Organic Enrichment/Low Dissolved Oxygen
    • Historic Land Management Activities

66339 Acres

1996

5B

2018
  • Salinity/TDS/Chlorides
    • A Source Unknown

66339 Acres

1996

5A

2037
    Additional monitoring and assessment needed. This TMDL completion date was updated to 2037.
  • Temperature, water
    • A Source Unknown

66339 Acres

2024

5A

2038
    This listing only applies to Montezuma/Nurse Slough Complex


Region 2

Suisun Slough

Estuary

2207.210400, 2207.230200  /  18050001
  • Diazinon
    • A Source Unknown

169 Acres

1998

5B

2007
    This listing was made by USEPA for the 1998 303(d) list. For 2006, diazinon was moved by USEPA from the 303(d) list to this being addressed list because of a completed USEPA approved TMDL.
  • Mercury
    • Historic Land Management Activities

169 Acres

2014

5B

2018
    Suisun Slough is part of Suisun Marsh so the TMDL for the Marsh will address impairments in associated sloughs.
  • Oxygen, Dissolved
    • Historic Land Management Activities

169 Acres

2014

5B

2018
    Suisun Slough is part of Suisun Marsh so slough impairments will be addressed by the TMDL for Suisun Marsh.
  • Temperature, water
    • A Source Unknown

169 Acres

2024

5A

2038


Region 2

Tomales Bay

Bay & Harbor

1115.300002,1115.300002,2201.110000,2201.120301,2201.120302,2201.120303,2201.130301,2201.140000,2201.210002,2201.210002  /  18050005
  • Indicator Bacteria
    • Agriculture-animal
    • Onsite Wastewater Systems (Septic Tanks)

1297 Acres

2024

5B

2007
  • Mercury
    • A Source Unknown

1297 Acres

1992

5B

2012
  • Nutrients
    • A Source Unknown

1297 Acres

1992

5A

2037
    TMDL will be developed as part of ongoing watershed management effort. This TMDL completion date was updated to 2037.
  • Sediment
    • A Source Unknown

1297 Acres

2024

5A

2037


Region 2

Upper San Leandro Reservoir

Lake & Reservoir

2204.200101,2204.200103  /  18050004
  • Mercury
    • A Source Unknown

758 Acres

2014

5A

2037
    This TMDL completion date was updated to 2037.


Region 2

Vasona Lake

Lake & Reservoir

20540050  /  18050003
  • Chlordane
    • A Source Unknown

52 Acres

2014

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

52 Acres

2014

5A

2037
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

52 Acres

2014

5A

2037


Region 2

Walker Creek

River & Stream

2201.110000,2201.120101,2201.120103,2201.120201,2201.120202,2201.120303  /  18050005
  • Indicator Bacteria
    • Agriculture-animal
    • Onsite Wastewater Systems (Septic Tanks)

17 Miles

2024

5B

2007
  • Mercury
    • Mine Tailings

17 Miles

1992

5B

2008
  • Nutrients
    • A Source Unknown

17 Miles

1992

5A

2037
    Tributary to Tomales Bay. TMDLs will be developed as part of evolving watershed management effort. Additional monitoring and assessment needed. This TMDL completion date was updated to 2037.
  • Sediment
    • A Source Unknown

17 Miles

2024

5A

2037
  • Toxicity
    • A Source Unknown

17 Miles

2014

5A

2037


Region 2

Washington Creek subwatershed (Sonoma County, tributary to Petaluma River)

River & Stream

2206.300103, 2206.300400  / 
  • Indicator Bacteria
    • Onsite Wastewater Systems (Septic Tanks)

8.4 Miles

2024

5B

2021
  • Oxygen, Dissolved
    • A Source Unknown

8.4 Miles

2024

5A

2037


Region 3

Alamo Creek

River & Stream

31230071  /  18060007
  • Toxicity
    • A Source Unknown

9 Miles

2014

5A

2023


Region 3

Alisal Creek (Monterey County)

River & Stream

3309.110000,3309.200003,3309.700903,3309.700905  /  18060011
  • Ammonia
    • Agriculture
    • Grazing-Related Sources

13 Miles

2014

5B

2015
  • Bensulide
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2020

5B

2018
  • Chlorophyll-a
    • Agriculture
    • Grazing-Related Sources
    • Natural Sources

13 Miles

2010

5B

2015
  • Chlorpyrifos
    • Agriculture

13 Miles

2020

5B

2011
  • Cyhalothrin, Lambda
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2020

5B

2018
  • Cypermethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2020

5B

2018
  • Dimethoate
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Imidacloprid
    • No Source Analysis Available

13 Miles

2020

5A

2027
  • Malathion
    • No Source Analysis Available

13 Miles

2020

5A

2025
  • Methomyl
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Nitrate
    • Agriculture

13 Miles

2002

5B

2015
  • Organophosphate Pesticides
    • Agriculture

13 Miles

2020

5B

2011
  • Oxyfluorfen
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Permethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2020

5B

2018
  • Sodium
    • A Source Unknown

13 Miles

2010

5A

2027
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

13 Miles

2014

5A

2035


Region 3

Alisal Slough (Monterey County)

River & Stream

3309.110000  /  18060011
  • Ammonia
    • Agriculture
    • Grazing-Related Sources

11 Miles

2014

5B

2015
  • Diazinon
    • Agriculture

11 Miles

2010

5B

2011
  • Imidacloprid
    • No Source Analysis Available

11 Miles

2020

5A

2035
  • Malathion
    • No Source Analysis Available

11 Miles

2014

5A

2025
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

11 Miles

2010

5B

2015
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

11 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

11 Miles

2014

5A

2035


Region 3

Aptos Creek

River & Stream

3304.130201,3304.130203,3304.130204  /  18060001
  • Aluminum
    • No Source Analysis Available

8.6 Miles

2020

5A

2037
  • Benthic Community Effects
    • No Source Analysis Available

8.6 Miles

2020

5A

2035
  • Indicator Bacteria
    • Collection System Failure
    • Natural Sources
    • Other Urban Runoff
    • Urban Runoff/Storm Sewers

8.6 Miles

2014

5B

2011
  • Sedimentation/Siltation
    • A Source Unknown

8.6 Miles

1990

5A

2027


Region 3

Arana Gulch

River & Stream

3304.120501,3304.120503  /  18060001
  • Chlorpyrifos
    • A Source Unknown

4.8 Miles

2010

5B

2015
  • Escherichia coli (E. coli)
    • No Source Analysis Available

4.8 Miles

2010

5A

2035
  • Toxicity
    • No Source Analysis Available

4.8 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

4.8 Miles

2010

5A

2035


Region 3

Arroyo Burro Creek

River & Stream

3315.320003  /  18060013
  • Arsenic
    • No Source Analysis Available

6.3 Miles

2010

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

6.3 Miles

2010

5A

2035
  • Nitrate
    • No Source Analysis Available

6.3 Miles

2010

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

6.3 Miles

2014

5A

2035
  • Selenium
    • No Source Analysis Available

6.3 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

6.3 Miles

2014

5A

2035


Region 3

Arroyo De La Cruz Lagoon

River & Stream

3310.120003  / 
  • Copper
    • No Source Analysis Available

0.51 Miles

2020

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

0.51 Miles

2014

5A

2035
  • Total Coliform
    • No Source Analysis Available

0.51 Miles

2020

5A

2035


Region 3

Arroyo Grande Creek (below Lopez Lake)

River & Stream

3310.310104,3310.310203,3310.310205,3310.310206  /  18060006
  • Benthic Community Effects
    • No Source Analysis Available

13 Miles

2014

5A

2035
  • Cadmium
    • No Source Analysis Available

13 Miles

2010

5A

2035
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

13 Miles

2014

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

13 Miles

2010

5A

2035
  • Molybdenum
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Nickel
    • No Source Analysis Available

13 Miles

2010

5A

2035
  • Nitrate
    • No Source Analysis Available

13 Miles

2010

5A

2035
  • Pyrethroids
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Selenium
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

13 Miles

2014

5A

2035
  • pH
    • No Source Analysis Available

13 Miles

2010

5A

2035


Region 3

Arroyo Paredon

River & Stream

3315.340003,3315.340004  /  18060013
  • Boron
    • No Source Analysis Available

5.3 Miles

2006

5A

2035
  • Chloride
    • No Source Analysis Available

5.3 Miles

2010

5A

2035
  • Copper
    • No Source Analysis Available

5.3 Miles

2010

5A

2035
  • Diazinon
    • Agriculture

5.3 Miles

2010

5B

2013
  • Fecal Coliform
    • No Source Analysis Available

5.3 Miles

2010

5A

2035
  • Nickel
    • No Source Analysis Available

5.3 Miles

2010

5A

2035
  • Nitrate
    • Agriculture

5.3 Miles

2006

5B

2014
  • Oxygen, Dissolved
    • No Source Analysis Available

5.3 Miles

2014

5A

2035
  • Selenium
    • No Source Analysis Available

5.3 Miles

2020

5A

2035
  • Sodium
    • No Source Analysis Available

5.3 Miles

2010

5A

2035
  • Specific Conductivity
    • No Source Analysis Available

5.3 Miles

2014

5A

2035
  • Temperature, water
    • No Source Analysis Available

5.3 Miles

2020

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

5.3 Miles

2014

5B

2013
  • pH
    • No Source Analysis Available

5.3 Miles

2010

5A

2035


Region 3

Arroyo Seco River

River & Stream

3309.300000,3309.600301,3309.600302,3309.600303,3309.600306,3309.600307,3309.600308,3309.600403  /  18060005
  • Temperature, water
    • No Source Analysis Available

43 Miles

2010

5A

2035
    Impaired reach is from the confluence with Tassajara Creek downstream to the confluence with the Salinas River.
  • pH
    • No Source Analysis Available

43 Miles

2010

5A

2035


Region 3

Atascadero Creek (San Luis Obispo County)

River & Stream

3309.811404  /  18060005
  • Escherichia coli (E. coli)
    • No Source Analysis Available

5.5 Miles

2010

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

5.5 Miles

2014

5A

2035
  • Toxicity
    • No Source Analysis Available

5.5 Miles

2020

5A

2035


Region 3

Atascadero Creek (Santa Barbara County)

River & Stream

3315.310001,3315.310003  /  18060013
  • Arsenic
    • No Source Analysis Available

6.2 Miles

2010

5A

2035
  • Benthic Community Effects
    • A Source Unknown

6.2 Miles

2014

5A

2034
  • Chloride
    • No Source Analysis Available

6.2 Miles

2010

5A

2035
  • Enterococcus
    • A Source Unknown

6.2 Miles

2010

5A

2027
  • Manganese
    • No Source Analysis Available

6.2 Miles

2020

5A

2035
  • Nitrate
    • No Source Analysis Available

6.2 Miles

2010

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

6.2 Miles

2014

5A

2035
  • Selenium
    • No Source Analysis Available

6.2 Miles

2020

5A

2035
  • Sodium
    • No Source Analysis Available

6.2 Miles

2010

5A

2035
  • Temperature, water
    • No Source Analysis Available

6.2 Miles

2010

5A

2035
  • Total Dissolved Solids
    • No Source Analysis Available

6.2 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

6.2 Miles

2014

5A

2035
  • pH
    • No Source Analysis Available

6.2 Miles

2010

5A

2035


Region 3

Beach Road Ditch

River & Stream

3305.100301  /  18060002
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.4 Miles

2010

5B

2016
  • Oxygen, Dissolved
    • A Source Unknown

3.4 Miles

2014

5A

2018
  • Turbidity
    • A Source Unknown

3.4 Miles

2010

5A

2023
  • pH
    • A Source Unknown

3.4 Miles

2010

5A

2027


Region 3

Bell Creek (Santa Barbara Co)

River & Stream

3315.100103  /  18060013
  • Escherichia coli (E. coli)
    • No Source Analysis Available

1 Miles

2014

5A

2035
  • Nitrate
    • Agriculture

1 Miles

2006

5B

2013
  • Selenium
    • No Source Analysis Available

1 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

1 Miles

2014

5A

2035


Region 3

Bennett Slough

River & Stream

3306.000004  /  18060011
  • Chlorophyll-a
    • A Source Unknown

1.9 Miles

2010

5A

2018
  • Oxygen, Dissolved
    • A Source Unknown

1.9 Miles

2014

5A

2018
  • Turbidity
    • A Source Unknown

1.9 Miles

2010

5A

2023
  • pH
    • A Source Unknown

1.9 Miles

2010

5A

2018


Region 3

Big Creek (Big Sur Coast)

River & Stream

3308.000501,3308.000503  /  18060006
  • pH
    • Natural Sources

6.6 Miles

2010

5A

2035


Region 3

Blanco Drain

River & Stream

3309.110000  /  18060011
  • DDD (Dichlorodiphenyldichloroethane)
    • No Source Analysis Available

9.2 Miles

2014

5A

2035
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

9.2 Miles

2014

5A

2035
  • DDT (Dichlorodiphenyltrichloroethane)
    • No Source Analysis Available

9.2 Miles

2014

5A

2035
  • Diazinon
    • Agriculture

9.2 Miles

2010

5B

2011
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

9.2 Miles

2010

5B

2015
  • Selenium
    • No Source Analysis Available

9.2 Miles

2020

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

9.2 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

9.2 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

9.2 Miles

2010

5A

2035


Region 3

Blosser Channel

River & Stream

3312.100300  /  18060008
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Groundwater Loadings
    • Natural Sources

2 Miles

2014

5B

2016
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

2 Miles

2014

5B

2015
  • Chlorpyrifos
    • Agriculture

2 Miles

2010

5B

2015
  • DDE (Dichlorodiphenyldichloroethylene)
    • Agriculture
    • Urban Runoff/Storm Sewers

2 Miles

2014

5B

2015
  • Diazinon
    • Agriculture

2 Miles

2010

5B

2016
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

2 Miles

2010

5B

2016
  • Permethrin
    • Agriculture
    • No Source Analysis Available
    • Urban Runoff/Storm Sewers

2 Miles

2014

5B

2014
  • Temperature, water
    • No Source Analysis Available

2 Miles

2010

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

2 Miles

2014

5B

2015
  • Turbidity
    • No Source Analysis Available

2 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

2 Miles

2010

5A

2035


Region 3

Bradley Canyon Creek

River & Stream

3312.100204,3312.100300  /  18060008
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Groundwater Loadings
    • Natural Sources

20 Miles

2014

5B

2016
  • Chlorpyrifos
    • Agriculture

20 Miles

2014

5B

2015
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

20 Miles

2006

5B

2016
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

20 Miles

2014

5B

2016
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

20 Miles

2014

5B

2015
  • Turbidity
    • No Source Analysis Available

20 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

20 Miles

2010

5A

2035


Region 3

Bradley Channel

River & Stream

31210030  /  18060008
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

3.7 Miles

2014

5B

2016
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

3.7 Miles

2014

5B

2015
  • Chlorpyrifos
    • Agriculture

3.7 Miles

2010

5B

2015
  • Cypermethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

3.7 Miles

2014

5B

2015
  • DDE (Dichlorodiphenyldichloroethylene)
    • Agriculture
    • Urban Runoff/Storm Sewers

3.7 Miles

2014

5B

2015
  • Diazinon
    • Agriculture

3.7 Miles

2010

5B

2015
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Urban Runoff/Storm Sewers

3.7 Miles

2014

5B

2013
  • Imidacloprid
    • No Source Analysis Available

3.7 Miles

2020

5A

2027
  • Linuron
    • No Source Analysis Available

3.7 Miles

2020

5A

2035
  • Malathion
    • Agriculture

3.7 Miles

2014

5B

2015
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

3.7 Miles

2006

5B

2016
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

3.7 Miles

2020

5B

2015
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

3.7 Miles

2014

5B

2015
  • Turbidity
    • No Source Analysis Available

3.7 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

3.7 Miles

2010

5A

2035


Region 3

Branciforte Creek

River & Stream

3304.120501,3304.120503  /  18060001
  • Chlorpyrifos
    • A Source Unknown

9.9 Miles

2010

5B

2015
  • Enterococcus
    • Collection System Failure
    • Onsite Wastewater Systems (Septic Tanks)
    • Transient encampments
    • Urban Runoff/Storm Sewers

9.9 Miles

2010

5B

2011
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Onsite Wastewater Systems (Septic Tanks)
    • Transient encampments
    • Urban Runoff/Storm Sewers

9.9 Miles

2010

5B

2011
  • Sedimentation/Siltation
    • Channel Erosion
    • Erosion/Siltation
    • Highway/Road/Bridge Construction
    • Hydromodification

9.9 Miles

2002

5B

2004
  • Toxicity
    • No Source Analysis Available

9.9 Miles

2014

5A

2035


Region 3

Cachuma, Lake

Lake & Reservoir

3314.400101,3314.400102,3314.510504,3314.510605,3314.510702,3314.510800,3314.510901,3314.510902,3314.520000  /  18060010
  • Mercury
    • No Source Analysis Available

3169 Acres

2014

5A

2035


Region 3

Camp Evers Creek

River & Stream

3304.120504  /  18060001
  • Escherichia coli (E. coli)
    • No Source Analysis Available

0.81 Miles

2014

5A

2035
  • pH
    • A Source Unknown

0.81 Miles

2010

5A

2027


Region 3

Canada De La Gaviota

River & Stream

3315.100301,3315.100302,3315.100403  /  18060013
  • Arsenic
    • No Source Analysis Available

7.1 Miles

2010

5A

2035
  • Boron
    • No Source Analysis Available

7.1 Miles

2006

5A

2035
  • Chloride
    • No Source Analysis Available

7.1 Miles

2010

5A

2035
  • Copper
    • No Source Analysis Available

7.1 Miles

2010

5A

2035
  • Nickel
    • No Source Analysis Available

7.1 Miles

2010

5A

2035
  • Selenium
    • No Source Analysis Available

7.1 Miles

2020

5A

2035
  • Sodium
    • No Source Analysis Available

7.1 Miles

2010

5A

2035


Region 3

Canada Del Capitan

River & Stream

3315.100204  /  18060013
  • Toxicity
    • A Source Unknown

5.8 Miles

2014

5A

2027


Region 3

Canada Del Refugio

River & Stream

3315.100202  /  18060013
  • Chloride
    • No Source Analysis Available

6.9 Miles

2010

5A

2035
  • Sodium
    • No Source Analysis Available

6.9 Miles

2010

5A

2035


Region 3

Carmel River

River & Stream

3307.000101,3307.000103,3307.000104,3307.000302,3307.000401,3307.000403,3307.000404,3307.000405,3307.000502,3307.000503  /  18060012
  • Benthic Community Effects
    • No Source Analysis Available

39 Miles

2014

5A

2035
  • Toxicity
    • No Source Analysis Available

39 Miles

2014

5A

2035
    The spatial extent of the impairment is limited to the reach between Highway 1 bridge and the Pacific Ocean.


Region 3

Carnadero Creek (Uvas Creek below Bloomfield Road)

River & Stream

3305.300200  /  18060002
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Domestic Animals/Livestock
    • Urban Runoff/Storm Sewers

3.2 Miles

2010

5B

2010
  • Imidacloprid
    • No Source Analysis Available

3.2 Miles

2020

5A

2027
  • Nitrate
    • Agriculture
    • Grazing-Related Sources
    • Natural Sources
    • Urban Runoff/Storm Sewers

3.2 Miles

2010

5B

2016
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

3.2 Miles

2014

5B

2016
  • Toxicity
    • No Source Analysis Available

3.2 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

3.2 Miles

2010

5A

2035


Region 3

Carneros Creek (Monterey County)

River & Stream

3306.000001,3306.000002,3306.000004,3306.000006  /  18060011
  • Ammonia
    • No Source Analysis Available

12 Miles

2014

5A

2025
  • Chlorophyll-a
    • No Source Analysis Available

12 Miles

2010

5A

2018
  • Chlorpyrifos
    • No Source Analysis Available

12 Miles

2020

5A

2035
  • Copper
    • No Source Analysis Available

12 Miles

2020

5A

2035
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

12 Miles

2020

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

12 Miles

2010

5A

2035
  • Nitrate
    • No Source Analysis Available

12 Miles

2010

5A

2025
  • Organophosphate Pesticides
    • No Source Analysis Available

12 Miles

2020

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

12 Miles

2014

5A

2025
  • Turbidity
    • No Source Analysis Available

12 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

12 Miles

2010

5A

2035


Region 3

Carneros Creek (Santa Barbara County)

River & Stream

3315.310002,3315.310003  /  18060013
  • Enterococcus
    • A Source Unknown

6.1 Miles

2010

5A

2027
  • Escherichia coli (E. coli)
    • No Source Analysis Available

6.1 Miles

2010

5A

2035
  • Nitrate
    • Agriculture

6.1 Miles

2010

5B

2014
  • Specific Conductivity
    • No Source Analysis Available

6.1 Miles

2014

5A

2035
  • Toxicity
    • No Source Analysis Available

6.1 Miles

2014

5A

2035


Region 3

Carpinteria Creek (below Gobernador Creek)

River & Stream

3315.340001,3315.340003  / 
  • Chloride
    • A Source Unknown

2.3 Miles

2014

5A

2027
  • Escherichia coli (E. coli)
    • No Source Analysis Available

2.3 Miles

2014

5A

2035
  • Nitrate
    • No Source Analysis Available

2.3 Miles

2014

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

2.3 Miles

2014

5A

2035
  • Sodium
    • A Source Unknown

2.3 Miles

2014

5A

2027
  • Toxicity
    • No Source Analysis Available

2.3 Miles

2014

5A

2035


Region 3

Carpinteria Marsh (El Estero)

Estuary

3315.340003  /  18060013
  • Nutrients
    • No Source Analysis Available

201 Acres

1994

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

201 Acres

2014

5A

2035
  • Priority Organics
    • A Source Unknown

201 Acres

1992

5A

2027


Region 3

Casmalia Canyon Creek

River & Stream

3313.000401,3313.000402  /  18060009
  • Sedimentation/Siltation
    • A Source Unknown

5 Miles

2006

5A

2027


Region 3

Castroville Slough

Coastal & Bay Shoreline

3309.120001  / 
  • Nitrate
    • No Source Analysis Available

11 Miles

2020

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

11 Miles

2020

5A

2035
  • pH
    • No Source Analysis Available

11 Miles

2020

5A

2035


Region 3

Chesbro Reservoir

Lake & Reservoir

3305.200104,3305.300200  /  18060002
  • DDT (Dichlorodiphenyltrichloroethane)
    • No Source Analysis Available

235 Acres

2014

5A

2035
  • Mercury
    • No Source Analysis Available

235 Acres

2010

5A

2035


Region 3

Cholame Creek

River & Stream

3317.000503,3317.000904,3317.000906  /  18060004
  • Boron
    • Natural Sources

8.8 Miles

2002

5B

2014
  • Chloride
    • A Source Unknown

8.8 Miles

2010

5A

2027
  • Oxygen, Dissolved
    • No Source Analysis Available

8.8 Miles

2014

5A

2035
    The impaired reach length is 1 mile and centered on Bitterwater Road.
  • Sodium
    • A Source Unknown

8.8 Miles

2010

5A

2027
  • Specific Conductivity
    • A Source Unknown

8.8 Miles

2014

5A

2027


Region 3

Chorro Creek

River & Stream

3310.220001,3310.220002,3310.220003,3310.270000  /  18060006
  • Benthic Community Effects
    • No Source Analysis Available

15 Miles

2014

5A

2035
  • Chloride
    • A Source Unknown

15 Miles

2014

5A

2027
  • Chromium
    • No Source Analysis Available

15 Miles

2014

5A

2035
  • Nickel
    • No Source Analysis Available

15 Miles

2010

5A

2035
  • Nutrients
    • Agriculture
    • Domestic Animals/Livestock
    • Flow Alteration/Regulation/Modification
    • Minor Municipal Point Source-dry and/or wet weather discharge
    • Natural Sources
    • Nonpoint Source

15 Miles

1998

5B

2007
  • Sedimentation/Siltation
    • Agriculture
    • Channel Erosion
    • Erosion/Siltation
    • Grazing-Related Sources
    • Highway/Road/Bridge Construction
    • Land Development

15 Miles

1990

5B

2004
  • Sodium
    • Municipal Point Sources

15 Miles

2014

5B

2007
  • Total Dissolved Solids
    • Municipal Point Sources

15 Miles

2014

5B

2007
  • Toxicity
    • No Source Analysis Available

15 Miles

2014

5A

2035


Region 3

Chualar Creek

River & Stream

30919000  /  18060011
  • Ammonia
    • Acid Mine Drainage
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

14 Miles

2014

5B

2015
  • Bensulide
    • No Source Analysis Available

14 Miles

2020

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

14 Miles

2014

5B

2018
  • Chlorpyrifos
    • Agriculture

14 Miles

2010

5B

2011
  • Cyhalothrin, Lambda
    • Agriculture
    • Urban Runoff/Storm Sewers

14 Miles

2014

5B

2018
  • Diazinon
    • Agriculture

14 Miles

2010

5B

2011
  • Dimethoate
    • No Source Analysis Available

14 Miles

2014

5A

2035
  • Escherichia coli (E. coli)
    • Domestic Animals/Livestock
    • Illegal dumping
    • Natural Sources

14 Miles

2010

5B

2012
  • Fecal Coliform
    • Domestic Animals/Livestock
    • Illegal dumping
    • Natural Sources

14 Miles

2010

5B

2012
  • Imidacloprid
    • No Source Analysis Available

14 Miles

2020

5A

2035
  • Malathion
    • No Source Analysis Available

14 Miles

2014

5A

2025
  • Methomyl
    • No Source Analysis Available

14 Miles

2020

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

14 Miles

2010

5B

2015
  • Organophosphate Pesticides
    • Agriculture
    • Urban Runoff/Storm Sewers

14 Miles

2020

5B

2011
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

14 Miles

2014

5B

2015
  • Permethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

14 Miles

2014

5B

2018
  • Temperature, water
    • No Source Analysis Available

14 Miles

2010

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

14 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

14 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

14 Miles

2010

5A

2035


Region 3

Chualar Creek, South Branch

River & Stream

30911010  /  18060011
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.1 Miles

2014

5B

2015
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.1 Miles

2010

5B

2015
  • Temperature, water
    • No Source Analysis Available

3.1 Miles

2014

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

3.1 Miles

2020

5B

2018
  • Turbidity
    • No Source Analysis Available

3.1 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

3.1 Miles

2010

5A

2035


Region 3

Chumash Creek

River & Stream

3310.220001  /  18060006
  • Escherichia coli (E. coli)
    • A Source Unknown

2.1 Miles

2014

5A

2027
  • Oxygen, Dissolved
    • A Source Unknown

2.1 Miles

2026

5A

2027


Region 3

Cieneguitas Creek

River & Stream

3315.310001,3315.310003  /  18060013
  • Enterococcus
    • A Source Unknown

3.2 Miles

2010

5A

2027
  • Escherichia coli (E. coli)
    • No Source Analysis Available

3.2 Miles

2010

5A

2035
  • Nitrate
    • No Source Analysis Available

3.2 Miles

2010

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

3.2 Miles

2014

5A

2035


Region 3

Corcoran Lagoon

Wetland, Freshwater

3304.130104  /  18060001
  • Total Coliform
    • A Source Unknown

12 Acres

2010

5A

2027
  • pH
    • A Source Unknown

12 Acres

2010

5A

2027


Region 3

Corralitos Creek

River & Stream

3305.100102,3305.100301  /  18060002
  • Turbidity
    • No Source Analysis Available

14 Miles

2010

5A

2035
    The impaired length is between Browns Valley Road and the confluence with Salsipuedes Creek.
  • pH
    • No Source Analysis Available

14 Miles

2010

5A

2035


Region 3

Cuyama River (above Twitchell Reservoir)

River & Stream

31230060  /  18060007
  • Boron
    • No Source Analysis Available

96 Miles

2010

5A

2035
    The impaired length is between Twitchell Reservoir and the Highway 33 Bridge
  • Chloride
    • No Source Analysis Available

96 Miles

2010

5A

2035
    The impaired length is between Twitchell Reservoir and the Highway 33 Bridge.
  • Sodium
    • No Source Analysis Available

96 Miles

2010

5A

2035
    Impaired reach is from Twitchell Reservoir to Highway 33 bridge.
  • Specific Conductivity
    • No Source Analysis Available

96 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

96 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

96 Miles

2010

5A

2035


Region 3

Dairy Creek

River & Stream

3310.220001,3310.220003  /  18060006
  • Enterococcus
    • A Source Unknown

4.7 Miles

2014

5A

2027
  • Escherichia coli (E. coli)
    • A Source Unknown

4.7 Miles

2010

5A

2027
    The impaired reach does not include the fenced area within the cattle exclusion (between stations DAM and DAU). Data indicate the reach within the fenced area is not impaired.
  • Oxygen, Dissolved
    • Grazing-Related Sources

4.7 Miles

2014

5A

2027


Region 3

Devereux Creek

River & Stream

3315.310003  /  18060013
  • Oxygen, Dissolved
    • No Source Analysis Available

1.1 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

1.1 Miles

2010

5A

2035


Region 3

Don Dahvee Creek (Monterey County)

River & Stream

3307.000502,3309.500402  /  18060012
  • Copper
    • No Source Analysis Available

1.9 Miles

2010

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

1.9 Miles

2010

5A

2035
  • Lead
    • No Source Analysis Available

1.9 Miles

2010

5A

2035
  • Zinc
    • No Source Analysis Available
    • Urban Runoff/Storm Sewers

1.9 Miles

2010

5A

2035


Region 3

Dos Pueblos Canyon Creek

River & Stream

3315.100101  /  18060013
  • Sodium
    • No Source Analysis Available

7.1 Miles

2010

5A

2035


Region 3

El Encanto Creek (Phelps Ditch) (Santa Barbara County)

River & Stream

3315.310002,3315.310003  / 
  • Escherichia coli (E. coli)
    • No Source Analysis Available

2.7 Miles

2020

5A

2035
  • Nitrate
    • No Source Analysis Available

2.7 Miles

2020

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

2.7 Miles

2020

5A

2035
  • pH
    • No Source Analysis Available

2.7 Miles

2020

5A

2035


Region 3

Elkhorn Slough

Estuary

3306.000002,3306.000003,3306.000004,3309.120002  /  18060011
  • Copper
    • No Source Analysis Available

3180 Acres

2020

5A

2035
  • DDT (Dichlorodiphenyltrichloroethane)
    • No Source Analysis Available

3180 Acres

2020

5A

2035
  • Dieldrin
    • No Source Analysis Available

3180 Acres

2020

5A

2035
  • Nitrate
    • No Source Analysis Available

3180 Acres

2014

5A

2025
  • Oxygen, Dissolved
    • No Source Analysis Available

3180 Acres

2014

5A

2025
  • Pesticides
    • A Source Unknown

3180 Acres

1990

5A

2027
  • Sedimentation/Siltation
    • A Source Unknown

3180 Acres

1996

5A

2027
  • Total Coliform
    • No Source Analysis Available

3180 Acres

2010

5A

2035
  • pH
    • No Source Analysis Available

3180 Acres

2010

5A

2035


Region 3

Espinosa Slough

River & Stream

3309.110000  /  18060011
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

1 Miles

2014

5B

2015
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

1 Miles

2020

5B

2018
  • Diazinon
    • Agriculture

1 Miles

2010

5B

2011
  • Malathion
    • No Source Analysis Available

1 Miles

2014

5A

2025
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

1 Miles

2010

5B

2015
  • Pesticides
    • A Source Unknown

1 Miles

1996

5A

2027
  • Priority Organics
    • A Source Unknown

1 Miles

1996

5A

2027
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

1 Miles

2020

5B

2018
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

1 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

1 Miles

2010

5A

2025
  • pH
    • No Source Analysis Available

1 Miles

2010

5A

2035


Region 3

Estrella River

River & Stream

3309.811904,3317.000503,3317.000507,3317.000604,3317.000605,3317.000606,3317.000701,3317.000704,3317.000706,3317.000708,(Total Count: 11)  /  18060004
  • Boron
    • Natural Sources

29 Miles

2010

5B

2014
  • Chloride
    • No Source Analysis Available

29 Miles

2010

5A

2035
    The water bearing formations in this watershed are Alluvium and Cuyama Morales Formations. These formations are likely to contribute to elevated salt levels and pH in the surface water and therefore this may be a natural condition.
  • Escherichia coli (E. coli)
    • No Source Analysis Available

29 Miles

2010

5A

2035
  • Sodium
    • No Source Analysis Available

29 Miles

2010

5A

2035
  • Toxicity
    • A Source Unknown

29 Miles

2014

5A

2023
  • Turbidity
    • No Source Analysis Available

29 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

29 Miles

2010

5A

2035


Region 3

Franklin Creek (Santa Barbara County)

River & Stream

3315.340003,3315.340004  /  18060013
  • Aluminum
    • No Source Analysis Available

2.9 Miles

2020

5A

2037
  • Chlorpyrifos
    • No Source Analysis Available

2.9 Miles

2010

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

2.9 Miles

2010

5A

2035
  • Imidacloprid
    • No Source Analysis Available

2.9 Miles

2020

5A

2027
  • Nitrate
    • Agriculture
    • Construction/Land Development
    • Natural Sources
    • Urban Runoff--Industrial Permitted
    • Urban Runoff/Storm Sewers

2.9 Miles

2006

5B

2019
  • Selenium
    • No Source Analysis Available

2.9 Miles

2020

5A

2035
  • Sodium
    • No Source Analysis Available

2.9 Miles

2010

5A

2035
  • Toxicity
    • No Source Analysis Available

2.9 Miles

2014

5A

2035
  • pH
    • No Source Analysis Available

2.9 Miles

2010

5A

2035


Region 3

Furlong Creek

River & Stream

3305.300200,3305.400304  /  18060002
  • Escherichia coli (E. coli)
    • No Source Analysis Available

8.5 Miles

2010

5A

2035
  • Fecal Coliform
    • Collection System Failure
    • Domestic Animals/Livestock
    • Urban Runoff/Storm Sewers

8.5 Miles

2010

5B

2010
  • Imidacloprid
    • No Source Analysis Available

8.5 Miles

2020

5A

2027
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

8.5 Miles

2010

5B

2016
  • Selenium
    • No Source Analysis Available

8.5 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

8.5 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

8.5 Miles

2010

5A

2035


Region 3

Gabilan Creek

River & Stream

3309.110000,3309.200002,3309.200003,3309.700902  /  18060005
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

9.5 Miles

2014

5B

2015
  • Benthic Community Effects
    • No Source Analysis Available

9.5 Miles

2020

5A

2035
  • Copper
    • No Source Analysis Available

9.5 Miles

2020

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

9.5 Miles

2010

5A

2035
  • Fecal Coliform
    • Collection System Failure
    • Domestic Animals/Livestock
    • Illegal dumping
    • Transient encampments
    • Urban Runoff/Storm Sewers

9.5 Miles

2002

5B

2012
  • Imidacloprid
    • No Source Analysis Available

9.5 Miles

2020

5A

2027
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

9.5 Miles

2006

5B

2015
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

9.5 Miles

2014

5B

2015
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

9.5 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

9.5 Miles

2010

5A

2025
  • pH
    • No Source Analysis Available

9.5 Miles

2010

5A

2035


Region 3

Glen Annie Canyon Creek

River & Stream

3315.310002,3315.310003  / 
  • Enterococcus
    • A Source Unknown

4.8 Miles

2014

5A

2027
  • Escherichia coli (E. coli)
    • No Source Analysis Available

4.8 Miles

2014

5A

2035
  • Nitrate
    • Agriculture

4.8 Miles

2014

5B

2014
  • Oxygen, Dissolved
    • No Source Analysis Available

4.8 Miles

2014

5A

2035
  • Selenium
    • No Source Analysis Available

4.8 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

4.8 Miles

2014

5A

2035


Region 3

Goleta Slough/Estuary

Estuary

3315.310003  /  18060013
  • Enterococcus
    • No Source Analysis Available

167 Acres

2020

5A

2035
  • Indicator Bacteria
    • A Source Unknown
    • Natural Sources
    • Urban Runoff/Storm Sewers

167 Acres

2014

5A

2027
  • Oxygen, Dissolved
    • No Source Analysis Available

167 Acres

2014

5A

2035
  • Priority Organics
    • A Source Unknown

167 Acres

1990

5A

2027
  • pH
    • No Source Analysis Available

167 Acres

2010

5A

2035


Region 3

Greene Valley Creek (Santa Barbara County)

River & Stream

3312.100300  /  18060008
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.9 Miles

2014

5B

2016
  • Chlorpyrifos
    • Agriculture

3.9 Miles

2010

5B

2015
  • DDD (Dichlorodiphenyldichloroethane)
    • Agriculture
    • Urban Runoff/Storm Sewers

3.9 Miles

2014

5B

2015
  • DDE (Dichlorodiphenyldichloroethylene)
    • Agriculture
    • Urban Runoff/Storm Sewers

3.9 Miles

2014

5B

2015
  • Malathion
    • Agriculture

3.9 Miles

2014

5B

2015
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.9 Miles

2010

5B

2016
  • Selenium
    • No Source Analysis Available

3.9 Miles

2020

5A

2035
  • Temperature, water
    • No Source Analysis Available

3.9 Miles

2010

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

3.9 Miles

2014

5B

2015
  • Turbidity
    • No Source Analysis Available

3.9 Miles

2010

5A

2035


Region 3

Harkins Slough

River & Stream

3305.100301,3305.100303  /  18060002
  • Chlorophyll-a
    • No Source Analysis Available

7.3 Miles

2010

5A

2035
  • Indicator Bacteria
    • A Source Unknown
    • See TMDL documentation

7.3 Miles

2014

5B

2007
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

7.3 Miles

2014

5B

2016
  • Toxicity
    • No Source Analysis Available

7.3 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

7.3 Miles

2010

5A

2035


Region 3

Hartnell Gulch West Fork (Monterey County)

River & Stream

3309.500402  / 
  • Escherichia coli (E. coli)
    • No Source Analysis Available

1 Miles

2020

5A

2035


Region 3

Jalama Creek

River & Stream

3315.100501,3315.100502  /  18060013
  • Chloride
    • Natural Sources

11 Miles

2010

5B

2013
  • Escherichia coli (E. coli)
    • No Source Analysis Available

11 Miles

2010

5A

2035
  • Sodium
    • Natural Sources

11 Miles

2010

5B

2013


Region 3

Jameson Lake

Lake & Reservoir

3314.510405  /  18060010
  • Mercury
    • No Source Analysis Available

118 Acres

2014

5A

2035


Region 3

Laguna Lake

Lake & Reservoir

3310.240102  / 
  • Ammonia
    • No Source Analysis Available

102 Acres

2020

5A

2035
  • Microcystins
    • No Source Analysis Available

102 Acres

2024

5A

2035


Region 3

Las Tablas Creek

River & Stream

3309.811201,3309.811202,3309.811203,3309.811205  /  18060005
  • Metals
    • Inactive Mining

5.5 Miles

1990

5A

2027


Region 3

Las Tablas Creek, North Fork

River & Stream

3309.811205  /  18060005
  • Metals
    • Inactive Mining

6.9 Miles

1990

5A

2027


Region 3

Las Tablas Creek, South Fork

River & Stream

3309.811205  /  18060006
  • Metals
    • Inactive Mining

4.8 Miles

1990

5A

2027


Region 3

Las Vegas Creek

River & Stream

3315.310002,3315.310003  / 
  • Escherichia coli (E. coli)
    • No Source Analysis Available

3.1 Miles

2020

5A

2035


Region 3

Limekiln Creek

River & Stream

3308.000502  /  18060006
  • pH
    • No Source Analysis Available

3.5 Miles

2010

5A

2035


Region 3

Little Oso Flaco Creek

River & Stream

3312.100300  /  18060008
  • Benthic Community Effects
    • No Source Analysis Available

2.2 Miles

2020

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

2.2 Miles

2020

5B

2015
  • Imidacloprid
    • No Source Analysis Available

2.2 Miles

2020

5A

2035
  • Malathion
    • Agriculture

2.2 Miles

2014

5B

2015
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

2.2 Miles

2010

5B

2016
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

2.2 Miles

2014

5B

2016
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

2.2 Miles

2020

5B

2015
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

2.2 Miles

2014

5B

2015
  • Turbidity
    • No Source Analysis Available

2.2 Miles

2010

5A

2035


Region 3

Llagas Creek (above Chesbro Reservoir)

River & Stream

3305.200103,3305.200104  /  18060002
  • Temperature, water
    • No Source Analysis Available

9.4 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

9.4 Miles

2010

5A

2035


Region 3

Llagas Creek (below Chesbro Reservoir)

River & Stream

30530020  /  18060002
  • Benthic Community Effects
    • No Source Analysis Available

19 Miles

2020

5A

2035
  • Chloride
    • A Source Unknown

19 Miles

2002

5A

2027
    Impaired section for Chlorides is located downstream of confluence with Miller Slough (approximately 1 mile of stream near Southside Drive).
  • Chlorpyrifos
    • Agriculture

19 Miles

2010

5B

2013
  • Copper
    • No Source Analysis Available

19 Miles

2020

5A

2035
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Domestic Animals/Livestock
    • Urban Runoff/Storm Sewers

19 Miles

2010

5A

2035
  • Manganese
    • No Source Analysis Available

19 Miles

2020

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

19 Miles

2014

5B

2016
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

19 Miles

2014

5B

2016
  • Sedimentation/Siltation
    • Agriculture-grazing
    • Habitat Modification
    • Hydromodification
    • Irrigated Crop Production
    • Land Development
    • Resource Extraction
    • Silviculture

19 Miles

1996

5B

2007
    Impaired section for Sediment/Siltation is located between the confluence with Church Creek and the confluence with Pajaro River (approximately 9.5 miles of stream length).
  • Selenium
    • No Source Analysis Available

19 Miles

2020

5A

2035
  • Sodium
    • A Source Unknown
    • Nonpoint Source

19 Miles

2002

5A

2027
    Impaired section for Sodium is located downstream of confluence with Miller Slough (approximately 1 mile of stream near Southside Drive).
  • Specific Conductivity
    • No Source Analysis Available

19 Miles

2014

5A

2035
  • Total Dissolved Solids
    • A Source Unknown

19 Miles

2002

5A

2027
    Impaired section for Total Dissolved Solids is located between the confluence with Church Creek and the confluence with Pajaro River (approximately 9.5 miles of stream length).
  • Toxicity
    • Agriculture

19 Miles

2014

5B

2013
  • Turbidity
    • No Source Analysis Available

19 Miles

2010

5A

2035


Region 3

Lockhart Gulch

River & Stream

3304.120401  /  18060001
  • Oxygen, Dissolved
    • A Source Unknown

2.8 Miles

2014

5A

2027
  • pH
    • A Source Unknown

2.8 Miles

2010

5A

2027


Region 3

Lopez Lake

Lake & Reservoir

3310.310101,3310.310104  /  18060006
  • Anatoxin-A
    • No Source Analysis Available

569 Acres

2024

5A

2035


Region 3

Los Berros Creek

River & Stream

3310.310202,3310.310203  /  18060008
  • Chloride
    • A Source Unknown

14 Miles

2010

5A

2027
  • Nitrate
    • Agriculture
    • Atmospheric Deposition
    • Grazing-Related Sources
    • Natural Sources
    • Urban Runoff/Storm Sewers

14 Miles

2010

5B

2012
  • Sodium
    • A Source Unknown

14 Miles

2010

5A

2027
  • Toxicity
    • No Source Analysis Available

14 Miles

2014

5A

2035


Region 3

Los Osos Creek (Los Osos to Los Osos Creek Estuary)

River & Stream

3310.230001  / 
  • Nitrate
    • Agriculture
    • Grazing-Related Sources

3.8 Miles

2014

5B

2005
  • Oxygen, Dissolved
    • A Source Unknown

3.8 Miles

2014

5A

2027
    This listing was made by USEPA.
  • Sedimentation/Siltation
    • Erosion/Siltation

3.8 Miles

2014

5B

2004


Region 3

Los Osos Creek (upstream of Los Osos)

River & Stream

3310.230001  /  18060006
  • Oxygen, Dissolved
    • No Source Analysis Available

6.1 Miles

2014

5A

2035


Region 3

Los Osos Creek Estuary

River & Stream

3310.230001,3310.230002,3310.230003  / 
  • Nitrate
    • Agriculture
    • Grazing-Related Sources

0.99 Miles

2014

5B

2005
  • Oxygen, Dissolved
    • No Source Analysis Available

0.99 Miles

2014

5A

2035
    This listing was made by USEPA.
  • Turbidity
    • No Source Analysis Available

0.99 Miles

2014

5A

2035


Region 3

Love Creek

River & Stream

3304.120201  /  18060001
  • Sedimentation/Siltation
    • A Source Unknown

3.8 Miles

2002

5A

2027


Region 3

Main Street Channel

River & Stream

3312.100300  /  18060008
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

3.3 Miles

2014

5B

2016
  • Arsenic
    • No Source Analysis Available

3.3 Miles

2020

5A

2035
  • Benthic Community Effects
    • No Source Analysis Available

3.3 Miles

2020

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

3.3 Miles

2014

5B

2015
  • Chlorpyrifos
    • Agriculture

3.3 Miles

2010

5B

2015
  • Copper
    • No Source Analysis Available

3.3 Miles

2020

5A

2035
  • DDD (Dichlorodiphenyldichloroethane)
    • Agriculture
    • Urban Runoff/Storm Sewers

3.3 Miles

2014

5B

2015
  • DDE (Dichlorodiphenyldichloroethylene)
    • Agriculture
    • Urban Runoff/Storm Sewers

3.3 Miles

2014

5B

2015
  • Diazinon
    • Agriculture

3.3 Miles

2010

5B

2015
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Urban Runoff/Storm Sewers

3.3 Miles

2014

5B

2013
    The spatial extent of this listing is limited to sampling station 312MSS and downstream. Upstream of station 312MSS, the salinity is above the salinity threshold for the use of the E. coli water quality objective.
  • Imidacloprid
    • No Source Analysis Available

3.3 Miles

2020

5A

2027
  • Linuron
    • No Source Analysis Available

3.3 Miles

2020

5A

2035
  • Malathion
    • Agriculture

3.3 Miles

2014

5B

2015
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

3.3 Miles

2002

5B

2016
  • Permethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

3.3 Miles

2014

5B

2015
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

3.3 Miles

2020

5B

2015
  • Temperature, water
    • No Source Analysis Available

3.3 Miles

2010

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

3.3 Miles

2014

5B

2015
  • Turbidity
    • No Source Analysis Available

3.3 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

3.3 Miles

2010

5A

2035


Region 3

Maria Ygnacio Creek

River & Stream

3315.310001,3315.310003  /  18060013
  • Enterococcus
    • A Source Unknown

7.2 Miles

2010

5A

2027
  • Escherichia coli (E. coli)
    • No Source Analysis Available

7.2 Miles

2010

5A

2035
  • Sodium
    • No Source Analysis Available

7.2 Miles

2010

5A

2035
  • Turbidity
    • No Source Analysis Available

7.2 Miles

2010

5A

2035


Region 3

McEnery Spring

River & Stream

3304.120402  /  18060001
  • pH
    • A Source Unknown

0.09 Miles

2010

5A

2027


Region 3

McGowan Ditch

River & Stream

3305.100301  /  18060002
  • DDD (Dichlorodiphenyldichloroethane)
    • A Source Unknown

2.5 Miles

2014

5A

2027
  • DDE (Dichlorodiphenyldichloroethylene)
    • A Source Unknown

2.5 Miles

2014

5A

2027
  • Malathion
    • A Source Unknown

2.5 Miles

2014

5A

2027
  • Nitrate
    • A Source Unknown

2.5 Miles

2010

5A

2018
  • Oxyfluorfen
    • No Source Analysis Available

2.5 Miles

2020

5A

2035
  • Toxicity
    • A Source Unknown

2.5 Miles

2014

5A

2023


Region 3

Merrit Ditch

River & Stream

3309.110000  /  18060011
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

0.45 Miles

2014

5B

2015
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

0.45 Miles

2020

5B

2018
  • Clothianidin
    • No Source Analysis Available

0.45 Miles

2020

5A

2027
  • Copper
    • No Source Analysis Available

0.45 Miles

2020

5A

2035
  • Cypermethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

0.45 Miles

2020

5B

2018
  • Diazinon
    • Agriculture

0.45 Miles

2010

5B

2011
  • Escherichia coli (E. coli)
    • No Source Analysis Available

0.45 Miles

2020

5A

2035
  • Malathion
    • No Source Analysis Available

0.45 Miles

2014

5A

2025
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

0.45 Miles

2010

5B

2015
  • Permethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

0.45 Miles

2020

5B

2018
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

0.45 Miles

2020

5B

2018
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

0.45 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

0.45 Miles

2010

5A

2025
  • pH
    • No Source Analysis Available

0.45 Miles

2010

5A

2035


Region 3

Millers Canal

River & Stream

30530020  /  18060002
  • Aluminum
    • No Source Analysis Available

3.3 Miles

2024

5A

2037
  • Arsenic
    • No Source Analysis Available

3.3 Miles

2020

5A

2035
  • Chlorophyll-a
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.3 Miles

2010

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.3 Miles

2010

5B

2016
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.3 Miles

2014

5B

2016
  • Selenium
    • No Source Analysis Available

3.3 Miles

2020

5A

2035
  • Temperature, water
    • No Source Analysis Available

3.3 Miles

2010

5A

2035
  • Toxicity
    • No Source Analysis Available

3.3 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

3.3 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

3.3 Miles

2010

5A

2035


Region 3

Mission Creek (Santa Barbara County)

River & Stream

3315.320001  /  18060013
  • Chlordane
    • No Source Analysis Available

8.7 Miles

2014

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

8.7 Miles

1992

5A

2035
  • Fecal Coliform
    • No Source Analysis Available

8.7 Miles

1992

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

8.7 Miles

2014

5A

2035
  • Toxicity
    • No Source Analysis Available

8.7 Miles

2014

5A

2035


Region 3

Monterey Harbor

Bay & Harbor

3307.000502,3309.500401,3309.500402  /  18060012
  • Arsenic
    • A Source Unknown

114 Acres

2010

5A

2027
  • Copper
    • A Source Unknown

114 Acres

2010

5A

2027
  • Oxygen, Dissolved
    • A Source Unknown

114 Acres

2014

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

114 Acres

2014

5A

2027
  • Toxicity
    • A Source Unknown

114 Acres

2014

5A

2023


Region 3

Moore Creek

River & Stream

3304.110301,3304.120503  /  18060001
  • Escherichia coli (E. coli)
    • No Source Analysis Available

3.6 Miles

2010

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

3.6 Miles

2014

5A

2035
  • Specific Conductivity
    • No Source Analysis Available

3.6 Miles

2014

5A

2035
  • pH
    • No Source Analysis Available

3.6 Miles

2010

5A

2035


Region 3

Moro Cojo Slough (Monterey County)

Estuary

3309.120001  /  18060011
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

171 Acres

2014

5B

2015
  • Copper
    • No Source Analysis Available

171 Acres

2020

5A

2035
  • Nickel
    • No Source Analysis Available

171 Acres

2020

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

171 Acres

2014

5B

2015
    There is some evidence that the impairment is limited to the lower Slough, downstream of monitoring station 309-MC-SAL-2, however additional nitrate and biostimulatory response data are necessary to confirm that the upstream reach meets nitrate and biostimulatory TMDLs and water quality objectives.
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

171 Acres

1800

5B

2015
  • Pesticides
    • A Source Unknown

171 Acres

2002

5A

2027
  • Sedimentation/Siltation
    • A Source Unknown

171 Acres

2002

5A

2027
  • Selenium
    • No Source Analysis Available

171 Acres

2020

5A

2035
  • Total Coliform
    • No Source Analysis Available

171 Acres

2010

5A

2035
  • Toxicity
    • No Source Analysis Available

171 Acres

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

171 Acres

2010

5A

2035
  • pH
    • No Source Analysis Available

171 Acres

2010

5A

2035


Region 3

Morro Bay

Bay & Harbor

3310.210000,3310.220002,3310.230002,3310.270000  /  18060006
  • Arsenic
    • No Source Analysis Available

2971 Acres

1800

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

2971 Acres

2006

5A

2035
  • Sedimentation/Siltation
    • Agriculture
    • Erosion/Siltation
    • Grazing-Related Sources
    • Habitat Modification
    • Highway/Road/Bridge Construction
    • Land Development

2971 Acres

1994

5B

2004


Region 3

Moss Landing Harbor

Bay & Harbor

3305.100301,3306.000004,3306.000005,3309.110000,3309.120001  /  18060011
  • Arsenic
    • No Source Analysis Available

188 Acres

2010

5A

2035
  • Chlorpyrifos
    • Agriculture

188 Acres

2010

5B

2011
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

188 Acres

2014

5A

2027
  • Dieldrin
    • No Source Analysis Available

188 Acres

2010

5A

2035
  • Indicator Bacteria
    • A Source Unknown

188 Acres

2014

5A

2027
  • Nickel
    • A Source Unknown

188 Acres

2010

5A

2027
  • Oxygen, Dissolved
    • A Source Unknown

188 Acres

2014

5A

2018
  • PCBs (Polychlorinated biphenyls)
    • No Source Analysis Available

188 Acres

2014

5A

2035
  • Sedimentation/Siltation
    • A Source Unknown

188 Acres

1996

5A

2027
  • Toxicity
    • Agriculture

188 Acres

2014

5B

2011
  • pH
    • No Source Analysis Available

188 Acres

2010

5A

2035


Region 3

Mountain Charlie Gulch

River & Stream

3304.120402  /  18060001
  • Sedimentation/Siltation
    • A Source Unknown

4 Miles

2002

5A

2027


Region 3

Nacimiento Reservoir

Lake & Reservoir

3309.811001,3309.811002,3309.811003,3309.811102,3309.811104,3309.811202,3309.811203,3309.811204,3309.820000  /  18060005
  • Mercury
    • No Source Analysis Available

5495 Acres

1800

5A

2035


Region 3

Nacimiento River (below Nacimiento Reservoir)

River & Stream

30981175  /  18060005
  • pH
    • No Source Analysis Available

12 Miles

2010

5A

2035


Region 3

Natividad Creek

River & Stream

3309.110000,3309.200003,3309.700904  /  18060011
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Urban Runoff/Storm Sewers

7.2 Miles

2014

5B

2015
  • Benthic Community Effects
    • No Source Analysis Available

7.2 Miles

2020

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

7.2 Miles

2020

5B

2018
  • Chlorpyrifos
    • No Source Analysis Available

7.2 Miles

2010

5B

2011
  • Copper
    • No Source Analysis Available

7.2 Miles

2020

5A

2035
  • Diazinon
    • Agriculture

7.2 Miles

2010

5B

2011
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Domestic Animals/Livestock
    • Illegal dumping
    • Transient encampments
    • Urban Runoff/Storm Sewers

7.2 Miles

2010

5B

2012
  • Fecal Coliform
    • No Source Analysis Available

7.2 Miles

2020

5B

2012
  • Imidacloprid
    • No Source Analysis Available

7.2 Miles

2020

5A

2027
  • Malathion
    • No Source Analysis Available

7.2 Miles

2014

5A

2025
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

7.2 Miles

2006

5B

2015
  • Organophosphate Pesticides
    • Agriculture

7.2 Miles

2020

5B

2011
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

7.2 Miles

2014

5B

2015
  • Permethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

7.2 Miles

2020

5B

2018
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

7.2 Miles

2020

5B

2018
  • Temperature, water
    • No Source Analysis Available

7.2 Miles

2010

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

7.2 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

7.2 Miles

2010

5A

2025


Region 3

Newell Creek (Lower)

River & Stream

3304.120202,3304.120600  /  18060001
  • pH
    • A Source Unknown

1.8 Miles

2010

5A

2027


Region 3

Newell Creek (Upper)

River & Stream

3304.120600  /  18060001
  • Sedimentation/Siltation
    • A Source Unknown

3.3 Miles

2002

5A

2027


Region 3

Nipomo Creek

River & Stream

3312.100101,3312.100104,3312.100300  /  18060008
  • Escherichia coli (E. coli)
    • Domestic Animals/Livestock
    • Urban Runoff/Storm Sewers

9.5 Miles

2014

5B

2013
  • Fecal Coliform
    • Domestic Animals/Livestock
    • Urban Runoff/Storm Sewers

9.5 Miles

2002

5B

2013
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

9.5 Miles

2010

5B

2016
  • Turbidity
    • No Source Analysis Available

9.5 Miles

2010

5A

2035


Region 3

Old Creek (above Whale Rock Reservoir)

River & Stream

3310.170002,3310.170003  /  18060006
  • Escherichia coli (E. coli)
    • A Source Unknown

7.8 Miles

2014

5A

2027


Region 3

Old Salinas River

River & Stream

30911010  /  18060011
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.8 Miles

2014

5B

2015
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

3.8 Miles

2014

5B

2018
  • Chlorophyll-a
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.8 Miles

2010

5B

2015
  • Chlorpyrifos
    • Agriculture

3.8 Miles

2010

5B

2011
  • Copper
    • No Source Analysis Available

3.8 Miles

2010

5A

2035
  • Cyhalothrin, Lambda
    • Agriculture
    • Urban Runoff/Storm Sewers

3.8 Miles

2014

5B

2018
  • DDD (Dichlorodiphenyldichloroethane)
    • No Source Analysis Available

3.8 Miles

2020

5A

2035
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

3.8 Miles

2020

5A

2035
  • Diazinon
    • Agriculture

3.8 Miles

2010

5B

2011
  • Imidacloprid
    • No Source Analysis Available

3.8 Miles

2020

5A

2027
  • Malathion
    • No Source Analysis Available

3.8 Miles

2014

5A

2025
  • Nickel
    • No Source Analysis Available

3.8 Miles

2010

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.8 Miles

2010

5B

2015
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.8 Miles

2014

5B

2015
  • Permethrin
    • Agriculture
    • No Source Analysis Available
    • Urban Runoff/Storm Sewers

3.8 Miles

2014

5B

2018
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

3.8 Miles

2020

5B

2018
  • Selenium
    • No Source Analysis Available

3.8 Miles

2020

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

3.8 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

3.8 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

3.8 Miles

2010

5A

2035


Region 3

Old Salinas River Estuary

Estuary

3309.110000  /  18060011
  • Nutrients
    • A Source Unknown

25 Acres

1992

5A

2018
  • Pesticides
    • A Source Unknown

25 Acres

1990

5A

2023


Region 3

Orcutt Creek

River & Stream

31210030  /  18060008
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

15 Miles

2014

5B

2016
  • Arsenic
    • No Source Analysis Available

15 Miles

2020

5A

2035
  • Benthic Community Effects
    • No Source Analysis Available

15 Miles

2020

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

15 Miles

2014

5B

2015
  • Boron
    • No Source Analysis Available

15 Miles

2006

5A

2035
    The spatial extent of this boron impairment is limited to the creek segment upstream of Black Road (monitoring site 312 ORB).
  • Carbaryl
    • No Source Analysis Available

15 Miles

2014

5A

2035
  • Chloride
    • No Source Analysis Available

15 Miles

2010

5A

2035
  • Chlorpyrifos
    • Agriculture

15 Miles

2006

5B

2015
  • Copper
    • No Source Analysis Available

15 Miles

2020

5A

2035
  • Cyfluthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

15 Miles

2014

5B

2015
  • Cyhalothrin, Lambda
    • Agriculture
    • Urban Runoff/Storm Sewers

15 Miles

2014

5B

2015
  • Cypermethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

15 Miles

2014

5B

2015
  • DDD (Dichlorodiphenyldichloroethane)
    • Agriculture
    • Urban Runoff/Storm Sewers

15 Miles

1800

5B

2015
  • DDE (Dichlorodiphenyldichloroethylene)
    • Agriculture
    • Urban Runoff/Storm Sewers

15 Miles

1800

5B

2015
  • DDT (Dichlorodiphenyltrichloroethane)
    • Agriculture
    • Urban Runoff/Storm Sewers

15 Miles

2006

5B

2015
  • Dieldrin
    • Agriculture

15 Miles

2006

5B

2015
  • Imidacloprid
    • No Source Analysis Available

15 Miles

2020

5A

2027
  • Linuron
    • No Source Analysis Available

15 Miles

2020

5A

2035
  • Malathion
    • Agriculture

15 Miles

2014

5B

2015
  • Molybdenum
    • No Source Analysis Available

15 Miles

2020

5A

2035
  • Nickel
    • No Source Analysis Available

15 Miles

2020

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

15 Miles

2002

5B

2016
  • Organophosphate Pesticides
    • Agriculture

15 Miles

2020

5B

2015
  • Oxyfluorfen
    • No Source Analysis Available

15 Miles

2020

5A

2035
  • Prometryn
    • No Source Analysis Available

15 Miles

2014

5A

2035
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

15 Miles

2020

5B

2015
  • Selenium
    • No Source Analysis Available

15 Miles

2020

5A

2035
  • Sodium
    • No Source Analysis Available

15 Miles

2010

5A

2035
  • Specific Conductivity
    • No Source Analysis Available

15 Miles

2014

5A

2035
  • Temperature, water
    • No Source Analysis Available

15 Miles

2010

5A

2035
  • Total Dissolved Solids
    • No Source Analysis Available

15 Miles

2020

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

15 Miles

2014

5B

2015
  • Turbidity
    • No Source Analysis Available

15 Miles

2010

5A

2035
  • Zinc
    • No Source Analysis Available

15 Miles

2020

5A

2035


Region 3

Oso Flaco Creek

River & Stream

3312.100300  /  18060008
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock

5.7 Miles

2014

5B

2016
  • Benthic Community Effects
    • No Source Analysis Available

5.7 Miles

2020

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

5.7 Miles

2014

5B

2015
  • Chloride
    • No Source Analysis Available

5.7 Miles

2010

5A

2035
  • Chlorpyrifos
    • Agriculture

5.7 Miles

2010

5B

2015
  • Cyhalothrin, Lambda
    • Agriculture
    • Urban Runoff/Storm Sewers

5.7 Miles

2014

5B

2015
  • DDD (Dichlorodiphenyldichloroethane)
    • Agriculture
    • Urban Runoff/Storm Sewers

5.7 Miles

2014

5B

2015
  • DDE (Dichlorodiphenyldichloroethylene)
    • Agriculture
    • Urban Runoff/Storm Sewers

5.7 Miles

2014

5B

2015
  • Imidacloprid
    • No Source Analysis Available

5.7 Miles

2020

5A

2027
  • Malathion
    • Agriculture

5.7 Miles

2014

5B

2015
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

5.7 Miles

2002

5B

2016
  • Oxyfluorfen
    • No Source Analysis Available

5.7 Miles

2020

5A

2035
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

5.7 Miles

2020

5B

2015
  • Sodium
    • No Source Analysis Available

5.7 Miles

2010

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

5.7 Miles

2014

5B

2015
  • Turbidity
    • No Source Analysis Available

5.7 Miles

2010

5A

2035


Region 3

Oso Flaco Lake

Lake & Reservoir

3312.100300  /  18060008
  • Chlordane
    • Agriculture

46 Acres

2014

5B

2015
  • Chlorophyll-a
    • No Source Analysis Available

46 Acres

2010

5A

2035
  • DDT (Dichlorodiphenyltrichloroethane)
    • Agriculture
    • Urban Runoff/Storm Sewers

46 Acres

2014

5B

2015
  • Dieldrin
    • Agriculture

46 Acres

2006

5B

2015
  • Endrin
    • Agriculture

46 Acres

2014

5B

2015
  • Escherichia coli (E. coli)
    • Domestic Animals/Livestock
    • Urban Runoff/Storm Sewers

46 Acres

2014

5B

2013
  • Heptachlor epoxide
    • No Source Analysis Available

46 Acres

2014

5A

2035
  • Mercury
    • No Source Analysis Available

46 Acres

2014

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

46 Acres

2002

5B

2016
  • Oxygen, Dissolved
    • No Source Analysis Available

46 Acres

2014

5A

2035
  • PCBs (Polychlorinated biphenyls)
    • No Source Analysis Available

46 Acres

2014

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

46 Acres

2014

5B

2015


Region 3

Pacheco Creek

River & Stream

3305.300200,3305.400104,3305.400201,3305.400301,3305.400302,3305.400305  /  18060002
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

26 Miles

2014

5B

2016
  • Turbidity
    • No Source Analysis Available

26 Miles

2010

5A

2035


Region 3

Pacific Ocean (Point Ano Nuevo to Soquel Point)

Ocean

30411022  /  18060001
  • Dieldrin
    • No Source Analysis Available

48748 Acres

2010

5A

2035


Region 3

Pacific Ocean at Arroyo Burro Beach (Santa Barbara County)

Coastal & Bay Shoreline

31532010  /  18060013
  • Enterococcus
    • No Source Analysis Available

1.2 Miles

2010

5A

2035
  • Total Coliform
    • A Source Unknown

1.2 Miles

2002

5A

2027


Region 3

Pacific Ocean at Arroyo Quemada Beach (Santa Barbara County)

Coastal & Bay Shoreline

3315.100201,3315.100202,3315.100203,3315.100204  /  18060013
  • Enterococcus
    • No Source Analysis Available

3.1 Miles

2010

5A

2035


Region 3

Pacific Ocean at Avila Beach (Avila Pier)

Coastal & Bay Shoreline

3310.240201,3310.250002,3310.260004  /  18060006
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

0.37 Miles

2010

5A

2027
  • Total Coliform
    • A Source Unknown

0.37 Miles

2010

5A

2027


Region 3

Pacific Ocean at Avila Beach (SLO Creek mouth)

Coastal & Bay Shoreline

3310.240201,3310.250002  /  18060006
  • Enterococcus
    • No Source Analysis Available

0.21 Miles

2010

5A

2035
  • Total Coliform
    • A Source Unknown

0.21 Miles

2010

5A

2027


Region 3

Pacific Ocean at Capitola Beach (Santa Cruz County)

Coastal & Bay Shoreline

3304.120501,3304.120503,3304.130104,3304.130201,3304.130202,3304.130203  /  18060001
  • Enterococcus
    • No Source Analysis Available

0.28 Miles

2010

5A

2035
  • Total Coliform
    • A Source Unknown

0.28 Miles

2010

5A

2027


Region 3

Pacific Ocean at Carpinteria State Beach (Carpinteria Creek mouth, Santa Barbara County)

Coastal & Bay Shoreline

31534020  /  18060013
  • Enterococcus
    • No Source Analysis Available

0.48 Miles

2010

5A

2035


Region 3

Pacific Ocean at Cayucos (Cayucos Creek Mouth)

Coastal & Bay Shoreline

3310.150000,3310.160000,3310.170002,3310.180000  /  18060006
  • Enterococcus
    • A Source Unknown

0.16 Miles

2010

5A

2027


Region 3

Pacific Ocean at Cowell Beach (Santa Cruz County)

Coastal & Bay Shoreline

30412053  /  18060001
  • Enterococcus
    • No Source Analysis Available

0.41 Miles

2010

5A

2035
  • Total Coliform
    • No Source Analysis Available

0.41 Miles

2010

5A

2035


Region 3

Pacific Ocean at East Beach (mouth of Mission Creek, Santa Barbara County)

Coastal & Bay Shoreline

3315.320001,3315.320002,3315.320003,3315.330002  /  18060013
  • Enterococcus
    • A Source Unknown

0.7 Miles

2010

5A

2027
  • Fecal Coliform
    • A Source Unknown

0.7 Miles

2002

5A

2027
  • Total Coliform
    • A Source Unknown

0.7 Miles

2002

5A

2027


Region 3

Pacific Ocean at East Beach (mouth of Sycamore Creek, Santa Barbara County)

Coastal & Bay Shoreline

3315.320001,3315.320002,3315.320003,3315.330001,3315.330002  /  18060013
  • Enterococcus
    • No Source Analysis Available

0.8 Miles

2010

5A

2035


Region 3

Pacific Ocean at Estero Bay

Ocean

3310.140201,3310.150000,3310.160000,3310.170002,3310.180000,3310.210000,3310.220002,3310.230001,3310.230002,3310.250001,(Total Count: 12)  / 
  • DDT (Dichlorodiphenyltrichloroethane)
    • No Source Analysis Available

26859 Acres

2020

5A

2035
  • Mercury
    • No Source Analysis Available

26859 Acres

2020

5A

2035


Region 3

Pacific Ocean at Goleta Beach (Santa Barbara County)

Coastal & Bay Shoreline

3315.310002,3315.310003,3315.320003  /  18060013
  • Enterococcus
    • No Source Analysis Available

0.16 Miles

2014

5A

2035
  • Total Coliform
    • A Source Unknown

0.16 Miles

2010

5A

2027


Region 3

Pacific Ocean at Guadalupe Dunes (Santa Barbara County)

Coastal & Bay Shoreline

31210030  /  18060008
  • Total Coliform
    • A Source Unknown

2.1 Miles

2010

5A

2027


Region 3

Pacific Ocean at Hammonds Beach (Santa Barbara County)

Coastal & Bay Shoreline

31533010  /  18060013
  • Total Coliform
    • A Source Unknown

0.55 Miles

2010

5A

2027


Region 3

Pacific Ocean at Hope Ranch Beach (Santa Barbara County)

Coastal & Bay Shoreline

31532010  /  18060013
  • Enterococcus
    • No Source Analysis Available

0.85 Miles

2010

5A

2035
  • Total Coliform
    • A Source Unknown

0.85 Miles

2010

5A

2027


Region 3

Pacific Ocean at Jalama Beach (Santa Barbara County)

Coastal & Bay Shoreline

3315.100402,3315.100501,3315.100502,3315.100602  /  18060013
  • Total Coliform
    • A Source Unknown

0.29 Miles

2002

5A

2027


Region 3

Pacific Ocean at Leadbetter Beach (Santa Barbara County)

Coastal & Bay Shoreline

31532011  /  18060013
  • Enterococcus
    • No Source Analysis Available

0.75 Miles

2010

5A

2035
  • Total Coliform
    • A Source Unknown

0.75 Miles

2010

5A

2027


Region 3

Pacific Ocean at Main Beach (Santa Cruz County), at Boardwalk

Coastal & Bay Shoreline

3304.110301,3304.120202,3304.120501,3304.120502,3304.120503,3304.120504,3304.130104  /  18060001
  • Enterococcus
    • No Source Analysis Available

0.55 Miles

2010

5A

2035
  • Total Coliform
    • No Source Analysis Available

0.55 Miles

2010

5A

2035


Region 3

Pacific Ocean at Main Beach (Santa Cruz County), at San Lorenzo River mouth

Coastal & Bay Shoreline

30412053  /  18060001
  • Total Coliform
    • A Source Unknown

0.03 Miles

2010

5A

2027


Region 3

Pacific Ocean at Mitchells Cove Beach

Coastal & Bay Shoreline

30412053  /  18060001
  • Enterococcus
    • No Source Analysis Available

0.22 Miles

2010

5A

2035
  • Total Coliform
    • No Source Analysis Available

0.22 Miles

2010

5A

2035


Region 3

Pacific Ocean at Monterey State Beach (Del Monte Beach)

Coastal & Bay Shoreline

30912014  /  18060012
  • Enterococcus
    • No Source Analysis Available

0.21 Miles

2010

5A

2035
  • Total Coliform
    • A Source Unknown

0.21 Miles

2010

5A

2027


Region 3

Pacific Ocean at Natural Bridges Beach

Coastal & Bay Shoreline

30411031  /  18060001
  • Total Coliform
    • No Source Analysis Available

0.27 Miles

2010

5A

2035


Region 3

Pacific Ocean at New Brighton Beach (Santa Cruz County)

Coastal & Bay Shoreline

30413014  /  18060001
  • Total Coliform
    • A Source Unknown

0.4 Miles

2010

5A

2027


Region 3

Pacific Ocean at Ocean Beach (Santa Barbara County)

Coastal & Bay Shoreline

31410050  /  18060010
  • Fecal Coliform
    • A Source Unknown

1.6 Miles

2002

5A

2027
  • Total Coliform
    • A Source Unknown

1.6 Miles

2002

5A

2027


Region 3

Pacific Ocean at Olde Port Beach (131 yards west of restrooms)

Coastal & Bay Shoreline

3310.240201,3310.250002  /  18060006
  • Enterococcus
    • No Source Analysis Available

0.05 Miles

2010

5A

2035
  • Total Coliform
    • A Source Unknown

0.05 Miles

2010

5A

2027


Region 3

Pacific Ocean at Pismo Beach Pier (San Luis Obispo County)

Coastal & Bay Shoreline

3310.240201,3310.260004,3310.310204,3310.310205  /  18060006
  • Fecal Coliform
    • A Source Unknown

0.02 Miles

2014

5A

2027
  • Total Coliform
    • A Source Unknown

0.02 Miles

2014

5A

2027


Region 3

Pacific Ocean at Pismo State Beach (San Luis Obispo County), Park Ave

Coastal & Bay Shoreline

3310.260004  /  18060006
  • Total Coliform
    • A Source Unknown

0.06 Miles

2010

5A

2027


Region 3

Pacific Ocean at Pismo State Beach (San Luis Obispo County), Wadsworth Ave

Coastal & Bay Shoreline

3310.260004  /  18060006
  • Total Coliform
    • A Source Unknown

0.07 Miles

2010

5A

2027


Region 3

Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier

Coastal & Bay Shoreline

3310.240201,3310.260004,3310.310204,3310.310205  /  18060006
  • Fecal Coliform
    • No Source Analysis Available

0.05 Miles

2010

5A

2037
  • Total Coliform
    • No Source Analysis Available

0.05 Miles

2010

5A

2037


Region 3

Pacific Ocean at Refugio Beach (Santa Barbara County)

Coastal & Bay Shoreline

31510022  /  18060013
  • Total Coliform
    • A Source Unknown

0.06 Miles

2002

5A

2027


Region 3

Pacific Ocean at Rio Del Mar (Santa Cruz County), Aptos Creek mouth

Coastal & Bay Shoreline

30413023  /  18060001
  • Total Coliform
    • A Source Unknown

1.1 Miles

2010

5A

2027


Region 3

Pacific Ocean at Santa Cruz Island

Ocean

3316.200000,3316.300000,4406.100000  / 
  • Mercury
    • No Source Analysis Available

129820 Acres

2020

5A

2035


Region 3

Pacific Ocean at Seabright (Castle) Beach

Coastal & Bay Shoreline

30412053  /  18060001
  • Total Coliform
    • No Source Analysis Available

0.63 Miles

2010

5A

2035


Region 3

Pacific Ocean at Stillwater Cove Beach

Coastal & Bay Shoreline

30950042  /  18060012
  • Enterococcus
    • No Source Analysis Available

0.35 Miles

1800

5A

2035


Region 3

Pacific Ocean at Twin Lakes Beach (Santa Cruz County)

Coastal & Bay Shoreline

30412053  /  18060001
  • Total Coliform
    • A Source Unknown

0.66 Miles

2010

5A

2027


Region 3

Pacific Ocean at Waddell Creek Beach

Coastal & Bay Shoreline

30420013  /  18060001
  • Total Coliform
    • A Source Unknown

0.78 Miles

2010

5A

2027


Region 3

Pacific Ocean, Coal Oil Pt. to Rincon Pt.

Ocean

3315.100102,3315.100103,3315.310002,3315.310003,3315.320001,3315.320002,3315.320003,3315.330001,3315.330002,3315.340002,(Total Count: 13)  / 
  • DDT (Dichlorodiphenyltrichloroethane)
    • No Source Analysis Available

43849 Acres

2020

5A

2035


Region 3

Pacific Ocean, Monterey Bay (excludes inner three miles nearshore)

Ocean

3304.110301, 3304.130104, 3304.130203, 3304.130203, 3305.100301, 3305.100301, 3305.100301, 3306.000004, 3306.000004, 3306.000004,(Total Count: 22)  / 
  • Chlordane
    • No Source Analysis Available

103819 Acres

2024

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • No Source Analysis Available

103819 Acres

2024

5A

2037
  • Dieldrin
    • No Source Analysis Available

103819 Acres

2024

5A

2037
  • PCBs (Polychlorinated biphenyls)
    • No Source Analysis Available

103819 Acres

2024

5A

2037
  • Toxaphene
    • No Source Analysis Available

103819 Acres

2024

5A

2037


Region 3

Pacific Ocean, Pescadero Pt. to Pt. Ano Nuevo

Coastal & Bay Shoreline

2202.400104,2202.400105,2202.400200,2202.400301,2202.400302,3304.200001,3304.200002,3304.200003,3304.200004  / 
  • Mercury
    • No Source Analysis Available

20851 Miles

2020

5A

2035


Region 3

Pacific Ocean, Pt. Buchon to Pt. San Luis

Ocean

3310.240201,3310.250001,3310.250002,3310.250003,3310.260004  / 
  • Mercury
    • No Source Analysis Available

27440 Acres

2020

5A

2035


Region 3

Pacific Ocean, Pt. Pinos to Pt. Piedras Blancas

Coastal & Bay Shoreline

3307.000502,3308.000101,3308.000102,3308.000103,3308.000104,3308.000105,3308.000201,3308.000202,3308.000203,3308.000204,(Total Count: 32)  / 
  • Dieldrin
    • No Source Analysis Available

148106 Miles

2020

5A

2035
  • Mercury
    • No Source Analysis Available

148106 Miles

2020

5A

2035


Region 3

Pajaro River

River & Stream

3305.100200,3305.100301,3305.200401,3305.200402,3305.300200  /  18060002
  • Aluminum
    • No Source Analysis Available

30 Miles

2020

5A

2037
  • Benthic Community Effects
    • No Source Analysis Available

30 Miles

2020

5A

2035
  • Boron
    • A Source Unknown

30 Miles

2006

5A

2027
    Impaired length for Boron is below Main Street (in Watsonville) to the mouth.
  • Chlordane
    • No Source Analysis Available

30 Miles

2010

5A

2037
  • Chloride
    • A Source Unknown

30 Miles

2010

5A

2027
  • Chlorpyrifos
    • Agriculture

30 Miles

2010

5B

2013
  • Chromium
    • No Source Analysis Available

30 Miles

2014

5A

2035
  • DDD (Dichlorodiphenyldichloroethane)
    • No Source Analysis Available

30 Miles

2010

5A

2037
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

30 Miles

2014

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • No Source Analysis Available

30 Miles

2014

5A

2037
  • Dieldrin
    • No Source Analysis Available

30 Miles

2010

5A

2037
  • Escherichia coli (E. coli)
    • No Source Analysis Available

30 Miles

2010

5A

2035
    The spatial extent of the impaired segment is limited to the reaches above the Highway 1 bridge, where the salinity is less than 1 ppt in 95 percent or more of the samples and therefore the segment where the water quality objective is applicable.
  • Heptachlor epoxide
    • No Source Analysis Available

30 Miles

2010

5A

2037
  • Imidacloprid
    • No Source Analysis Available

30 Miles

2020

5A

2037
  • Manganese
    • No Source Analysis Available

30 Miles

2020

5A

2035
  • Nickel
    • No Source Analysis Available

30 Miles

2010

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

30 Miles

2006

5B

2016
  • Oxyfluorfen
    • No Source Analysis Available

30 Miles

2020

5A

2035
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

30 Miles

2014

5B

2016
  • PCBs (Polychlorinated biphenyls)
    • No Source Analysis Available

30 Miles

2010

5A

2037
  • Sedimentation/Siltation
    • Agriculture
    • Domestic Animals/Livestock
    • Grazing-Related Sources
    • Habitat Modification
    • Highway/Road/Bridge Construction
    • Hydromodification
    • Land Development
    • Logging Road Construction/Maintenance
    • Urban Runoff/Storm Sewers

30 Miles

1996

5B

2007
  • Selenium
    • No Source Analysis Available

30 Miles

2020

5A

2035
  • Sodium
    • A Source Unknown

30 Miles

2010

5A

2027
  • Toxicity
    • Agriculture

30 Miles

2014

5B

2013
  • Turbidity
    • No Source Analysis Available

30 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

30 Miles

2010

5A

2035


Region 3

Pajaro River Estuary

Estuary

30510030  /  18060002
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

24 Acres

2014

5A

2035
  • Diazinon
    • Agriculture

24 Acres

2010

5B

2013
  • Malathion
    • No Source Analysis Available

24 Acres

2014

5A

2035
  • Nickel
    • No Source Analysis Available

24 Acres

2020

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

24 Acres

2014

5A

2035
  • Temperature, water
    • No Source Analysis Available

24 Acres

2014

5A

2035
  • Toxicity
    • Agriculture

24 Acres

2014

5B

2013
  • pH
    • No Source Analysis Available

24 Acres

2014

5A

2035


Region 3

Pennington Creek

River & Stream

3310.220001  /  18060006
  • Escherichia coli (E. coli)
    • No Source Analysis Available

5.5 Miles

2010

5A

2035


Region 3

Pico Creek

River & Stream

3310.130204  /  18060006
  • Oxygen, Dissolved
    • No Source Analysis Available

1.1 Miles

2014

5A

2035
    The segment that is impaired due to low dissolved oxygen is located between the creek mouth and the top of the lagoon (approximately 1/2 mile).


Region 3

Pinto Lake

Lake & Reservoir

3305.100301  /  18060002
  • Ammonia
    • Agriculture
    • Atmospheric Deposition
    • Grazing-Related Sources
    • Groundwater Loadings
    • Internal Nutrient Cycling (primarily lakes)
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff--Industrial Permitted
    • Urban Runoff/Storm Sewers

105 Acres

2014

5B

2021
  • Chlorophyll-a
    • Agriculture
    • Atmospheric Deposition
    • Grazing-Related Sources
    • Groundwater Loadings
    • Internal Nutrient Cycling (primarily lakes)
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff--Industrial Permitted
    • Urban Runoff/Storm Sewers

105 Acres

2010

5B

2021
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

105 Acres

2014

5A

2027
  • Dieldrin
    • No Source Analysis Available

105 Acres

2014

5A

2035
  • Mercury
    • No Source Analysis Available

105 Acres

2010

5A

2035
  • Microcystins
    • Agriculture
    • Atmospheric Deposition
    • Grazing-Related Sources
    • Groundwater Loadings
    • Internal Nutrient Cycling (primarily lakes)
    • Onsite Wastewater Systems (Septic Tanks)
    • Other
    • Urban Runoff/Storm Sewers

105 Acres

2020

5B

2021
  • Oxygen, Dissolved
    • Agriculture
    • Atmospheric Deposition
    • Grazing-Related Sources
    • Groundwater Loadings
    • Internal Nutrient Cycling (primarily lakes)
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff--Industrial Permitted
    • Urban Runoff/Storm Sewers

105 Acres

2014

5B

2021
  • Scum/Foam-unnatural
    • Agriculture
    • Atmospheric Deposition
    • Grazing-Related Sources
    • Groundwater Loadings
    • Internal Nutrient Cycling (primarily lakes)
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff--Industrial Permitted
    • Urban Runoff/Storm Sewers

105 Acres

2010

5B

2021
  • pH
    • No Source Analysis Available

105 Acres

2010

5A

2035


Region 3

Pismo Creek

River & Stream

3310.260003,3310.260004  /  18060006
  • Chloride
    • No Source Analysis Available

5.6 Miles

2010

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

5.6 Miles

2010

5A

2035
  • Manganese
    • No Source Analysis Available

5.6 Miles

2020

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

5.6 Miles

2014

5A

2035
  • Sodium
    • No Source Analysis Available

5.6 Miles

2010

5A

2035


Region 3

Port San Luis

Bay & Harbor

3310.240201,3310.250002  /  18060006
  • Arsenic
    • A Source Unknown

390 Acres

2010

5A

2027
  • Dieldrin
    • A Source Unknown

390 Acres

2010

5A

2027
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • No Source Analysis Available

390 Acres

2014

5A

2035
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

390 Acres

2014

5A

2027


Region 3

Porter Gulch Creek

River & Stream

3304.130103,3304.130104  /  18060001
  • Enterococcus
    • A Source Unknown

2.3 Miles

2010

5A

2027
  • Escherichia coli (E. coli)
    • A Source Unknown

2.3 Miles

2010

5A

2027


Region 3

Prefumo Creek

River & Stream

3310.240102,3310.240202  /  18060006
  • Escherichia coli (E. coli)
    • No Source Analysis Available

6.2 Miles

2014

5A

2035
  • Nitrate
    • Agriculture
    • Natural Sources

6.2 Miles

2006

5B

2007
  • Oxygen, Dissolved
    • No Source Analysis Available

6.2 Miles

2014

5A

2035
  • Selenium
    • No Source Analysis Available

6.2 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

6.2 Miles

2014

5A

2035


Region 3

Quail Creek

River & Stream

3309.110000,3309.200003,3309.700905,3309.700906  /  18060011
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

7.5 Miles

2014

5B

2015
  • Bensulide
    • No Source Analysis Available

7.5 Miles

2020

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

7.5 Miles

2014

5B

2018
  • Chlorpyrifos
    • Agriculture

7.5 Miles

2010

5B

2011
  • Copper
    • No Source Analysis Available

7.5 Miles

2020

5A

2035
  • Cyhalothrin, Lambda
    • Agriculture
    • Urban Runoff/Storm Sewers

7.5 Miles

2014

5B

2018
  • Cypermethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

7.5 Miles

2014

5B

2018
  • Diazinon
    • Agriculture

7.5 Miles

2010

5B

2011
  • Dimethoate
    • No Source Analysis Available

7.5 Miles

2014

5A

2035
  • Escherichia coli (E. coli)
    • Domestic Animals/Livestock
    • Illegal dumping

7.5 Miles

2010

5B

2012
  • Imidacloprid
    • No Source Analysis Available

7.5 Miles

2020

5A

2027
  • Malathion
    • No Source Analysis Available

7.5 Miles

2014

5A

2025
  • Methomyl
    • No Source Analysis Available

7.5 Miles

2020

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

7.5 Miles

2006

5B

2015
  • Organophosphate Pesticides
    • Agriculture

7.5 Miles

2020

5B

2011
  • Oxyfluorfen
    • No Source Analysis Available

7.5 Miles

2020

5A

2035
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

7.5 Miles

2014

5B

2015
  • Permethrin
    • A Source Unknown

7.5 Miles

2014

5A

2027
  • Permethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

7.5 Miles

2014

5B

2018
  • Temperature, water
    • No Source Analysis Available

7.5 Miles

2010

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

7.5 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

7.5 Miles

2010

5A

2035
  • Zinc
    • No Source Analysis Available

7.5 Miles

2020

5A

2035
  • pH
    • No Source Analysis Available

7.5 Miles

2010

5A

2035


Region 3

Rincon Creek

River & Stream

3315.340002  /  18060013
  • Ammonia
    • No Source Analysis Available

10 Miles

2014

5A

2035
  • Arsenic
    • No Source Analysis Available

10 Miles

2010

5A

2035
  • Boron
    • No Source Analysis Available

10 Miles

2006

5A

2035
  • Chloride
    • No Source Analysis Available

10 Miles

2010

5A

2035
  • Copper
    • No Source Analysis Available

10 Miles

2010

5A

2035
  • Nickel
    • No Source Analysis Available

10 Miles

2010

5A

2035
  • Nitrate
    • No Source Analysis Available

10 Miles

2010

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

10 Miles

2014

5A

2035
  • Selenium
    • No Source Analysis Available

10 Miles

2020

5A

2035
  • Sodium
    • No Source Analysis Available

10 Miles

2010

5A

2035
  • Specific Conductivity
    • No Source Analysis Available

10 Miles

2014

5A

2035
  • Total Dissolved Solids
    • No Source Analysis Available

10 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

10 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

10 Miles

2010

5A

2035


Region 3

Rodeo Creek Gulch

River & Stream

3304.130103,3304.130104  /  18060001
  • Turbidity
    • A Source Unknown

5.6 Miles

2010

5A

2023
  • pH
    • A Source Unknown

5.6 Miles

2010

5A

2027


Region 3

Romero Creek

River & Stream

3315.330001  /  18060013
  • pH
    • A Source Unknown

5.1 Miles

2010

5A

2027


Region 3

Salinas Reclamation Canal

River & Stream

3309.110000  /  18060011
  • Aluminum
    • No Source Analysis Available

13 Miles

2020

5A

2037
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

13 Miles

2014

5B

2015
  • Benthic Community Effects
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2014

5B

2018
  • Chlorpyrifos
    • Agriculture

13 Miles

2010

5B

2011
  • Clothianidin
    • No Source Analysis Available

13 Miles

2020

5A

2027
  • Copper
    • No Source Analysis Available

13 Miles

2010

5A

2035
  • Cyfluthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2014

5B

2018
  • Cyhalothrin, Lambda
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2014

5B

2018
  • Cypermethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2014

5B

2018
  • DDD (Dichlorodiphenyldichloroethane)
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Deltamethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2020

5B

2018
  • Dimethoate
    • No Source Analysis Available

13 Miles

2014

5A

2035
  • Disulfoton
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Domestic Animals/Livestock
    • Illegal dumping
    • Transient encampments
    • Urban Runoff/Storm Sewers

13 Miles

2010

5B

2012
  • Fecal Coliform
    • Collection System Failure
    • Domestic Animals/Livestock
    • Illegal dumping
    • Transient encampments
    • Urban Runoff/Storm Sewers

13 Miles

2002

5B

2012
  • Fenpropathrin
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2020

5B

2018
  • Imidacloprid
    • No Source Analysis Available

13 Miles

2020

5A

2027
  • Lead
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Malathion
    • No Source Analysis Available

13 Miles

2014

5A

2025
  • Methomyl
    • No Source Analysis Available

13 Miles

2020

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

13 Miles

2010

5B

2015
  • Organophosphate Pesticides
    • Agriculture

13 Miles

2020

5B

2011
  • Permethrin
    • A Source Unknown

13 Miles

2014

5A

2027
  • Permethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2014

5B

2018
  • Priority Organics
    • A Source Unknown

13 Miles

1996

5A

2027
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2020

5B

2018
  • Thiamethoxam
    • No Source Analysis Available

13 Miles

2020

5A

2027
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

13 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

13 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

13 Miles

2010

5A

2035


Region 3

Salinas River (lower, estuary to near Gonzales Rd crossing, watersheds 30910 and 30920)

River & Stream

3309.110000  /  18060011
  • Aluminum
    • No Source Analysis Available

36 Miles

2020

5A

2037
  • Arsenic
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • Benthic Community Effects
    • No Source Analysis Available

36 Miles

2014

5A

2035
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

36 Miles

2014

5B

2018
  • Chlordane
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • Chloride
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • Chromium
    • No Source Analysis Available

36 Miles

2014

5A

2035
  • DDD (Dichlorodiphenyldichloroethane)
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

36 Miles

2014

5A

2035
  • DDT (Dichlorodiphenyltrichloroethane)
    • No Source Analysis Available

36 Miles

2014

5A

2035
  • Dieldrin
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • Enterococcus
    • A Source Unknown

36 Miles

2010

5A

2027
  • Escherichia coli (E. coli)
    • Domestic Animals/Livestock
    • Illegal dumping
    • Urban Runoff/Storm Sewers

36 Miles

2010

5B

2013
    The spatial extent of the impaired segment is limited to the reach upstream of tidal influence, near Blanco Drain, where the salinity is less than 1 ppt in 95 percent or more of the samples.
  • Fipronil
    • No Source Analysis Available

36 Miles

2014

5A

2037
  • Imidacloprid
    • No Source Analysis Available

36 Miles

2020

5A

2037
  • Manganese
    • No Source Analysis Available

36 Miles

2020

5A

2035
  • Nickel
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

36 Miles

2006

5B

2015
  • PCBs (Polychlorinated biphenyls)
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • Selenium
    • No Source Analysis Available

36 Miles

2020

5A

2035
  • Sodium
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • Temperature, water
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • Total Dissolved Solids
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • Toxaphene
    • A Source Unknown

36 Miles

1994

5A

2027
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

36 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

36 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

36 Miles

2010

5A

2035


Region 3

Salinas River (middle, near Gonzales Rd crossing to confluence with Nacimiento River)

River & Stream

3309.110000,3309.300000,3309.400000,3309.810503,3309.810506,3309.810507,3309.811907  /  18060005
  • Benthic Community Effects
    • No Source Analysis Available

73 Miles

2014

5A

2035
  • Temperature, water
    • No Source Analysis Available

73 Miles

2010

5A

2035
  • Toxicity
    • No Source Analysis Available

73 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

73 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

73 Miles

2010

5A

2035


Region 3

Salinas River (upper, confluence of Nacimiento River to Santa Margarita Reservoir)

River & Stream

3309.811302,3309.811303,3309.811305,3309.811306,3309.811402,3309.811403,3309.811404,3309.811405,3309.811406,3309.811407,(Total Count: 21)  /  18060005
  • Benthic Community Effects
    • No Source Analysis Available

50 Miles

2020

5A

2035
  • Chloride
    • A Source Unknown

50 Miles

2002

5A

2027
  • Oxygen, Dissolved
    • No Source Analysis Available

50 Miles

2014

5A

2035
  • Sodium
    • A Source Unknown

50 Miles

2002

5A

2027
  • Toxicity
    • No Source Analysis Available

50 Miles

2014

5A

2035
  • pH
    • No Source Analysis Available

50 Miles

2010

5A

2035


Region 3

Salinas River Lagoon (North)

Estuary

3309.110000  /  18060011
  • Chlorpyrifos
    • Agriculture

23 Acres

2014

5B

2011
  • DDE (Dichlorodiphenyldichloroethylene)
    • A Source Unknown

23 Acres

2014

5A

2018
  • Nutrients
    • Agriculture

23 Acres

1992

5B

2015
  • Toxicity
    • Agriculture

23 Acres

2014

5B

2011
  • pH
    • No Source Analysis Available

23 Acres

2014

5A

2035


Region 3

Salinas River Refuge Lagoon (South)

Estuary

3309.110000  /  18060011
  • Turbidity
    • A Source Unknown

0.72 Acres

2010

5A

2023
  • pH
    • A Source Unknown

0.72 Acres

2010

5A

2027


Region 3

Salsipuedes Creek (Santa Barbara County)

River & Stream

3314.200103,3314.200202,3314.200203  /  18060013
  • Chloride
    • No Source Analysis Available

9 Miles

2010

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

9 Miles

2014

5A

2035
  • Sodium
    • No Source Analysis Available

9 Miles

2010

5A

2035


Region 3

Salsipuedes Creek (Santa Cruz County)

River & Stream

3305.100301  /  18060002
  • Aluminum
    • No Source Analysis Available

2.6 Miles

2020

5A

2037
  • Escherichia coli (E. coli)
    • No Source Analysis Available

2.6 Miles

2010

5B

2012
  • Lead
    • No Source Analysis Available

2.6 Miles

2020

5A

2035
  • Manganese
    • No Source Analysis Available

2.6 Miles

2020

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

2.6 Miles

2010

5B

2016
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

2.6 Miles

2014

5B

2016
  • Toxicity
    • No Source Analysis Available

2.6 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

2.6 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

2.6 Miles

2010

5A

2035


Region 3

San Antonio Creek (San Antonio Watershed, Rancho del las Flores Bridge at Hwy 135 to downstream at Railroad Bridge)

River & Stream

31300050  /  18060009
  • Ammonia
    • No Source Analysis Available

29 Miles

2014

5A

2035
  • Arsenic
    • No Source Analysis Available

29 Miles

2010

5A

2035
  • Boron
    • No Source Analysis Available

29 Miles

2002

5A

2035
  • Chloride
    • No Source Analysis Available

29 Miles

2010

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

29 Miles

2010

5A

2035
    The spatial extent of the impaired segment is limited to the reaches above the Highway 1 bridge (and Barca Slough) where the salinity is less than 1 ppt in 95 percent or more of the samples and therefore the E. coli water quality objective is applicable.
  • Nitrate
    • Agriculture

29 Miles

2010

5C

2025
  • Oxygen, Dissolved
    • No Source Analysis Available

29 Miles

2014

5A

2035
    The impaired segment is from the creek mouth up to the western edge of Barka Slough.
  • Selenium
    • No Source Analysis Available

29 Miles

2020

5A

2035
  • Sodium
    • No Source Analysis Available

29 Miles

2010

5A

2035
  • Toxicity
    • No Source Analysis Available

29 Miles

2014

5A

2035


Region 3

San Antonio Reservoir

Lake & Reservoir

3309.810302,3309.810402,3309.810403,3309.810504,3309.810601,3309.810602,3309.810603,3309.810604,3309.830000  /  18060005
  • DDT (Dichlorodiphenyltrichloroethane)
    • No Source Analysis Available

5379 Acres

2014

5A

2035
  • Mercury
    • No Source Analysis Available

5379 Acres

2010

5A

2035
  • Microcystins
    • No Source Analysis Available

5379 Acres

2024

5A

2035


Region 3

San Antonio River (below San Antonio Reservoir)

River & Stream

3309.810504,3309.810505,3309.810507,3309.830000  /  18060005
  • Escherichia coli (E. coli)
    • Domestic Animals/Livestock
    • Natural Sources

8.8 Miles

2010

5B

2011
  • pH
    • No Source Analysis Available

8.8 Miles

2010

5A

2035


Region 3

San Benito River

River & Stream

3305.200402,3305.200502,3305.300200,3305.500106,3305.500201,3305.500202,3305.500203,3305.500205,3305.500206,3305.500301,(Total Count: 16)  /  18060002
  • Aluminum
    • No Source Analysis Available

87 Miles

2020

5A

2037
  • Boron
    • A Source Unknown

87 Miles

2010

5A

2027
  • Copper
    • No Source Analysis Available

87 Miles

2020

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

87 Miles

2010

5A

2035
    The spatial extent of the impaired segment is limited to the reach upstream of the station 305BRI, where the salinity is less than 1 ppt in 95 percent or more of the samples.
  • Manganese
    • No Source Analysis Available

87 Miles

2020

5A

2035
  • Sedimentation/Siltation
    • Agriculture
    • Grazing-Related Sources
    • Harvesting, Restoration, Residue Management
    • Highway/Road/Bridge Runoff
    • Hydromodification
    • Road Construction
    • Surface Mining
    • Urban Runoff/Storm Sewers

87 Miles

1990

5B

2007
  • Specific Conductivity
    • No Source Analysis Available

87 Miles

2014

5A

2035
  • Toxicity
    • No Source Analysis Available

87 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

87 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

87 Miles

2010

5A

2035


Region 3

San Bernardo Creek

River & Stream

3310.220001,3310.220002  /  18060006
  • Escherichia coli (E. coli)
    • No Source Analysis Available

7.1 Miles

2010

5A

2035


Region 3

San Jose Creek (Monterey County)

River & Stream

3308.000104  /  18060006
  • pH
    • No Source Analysis Available

9 Miles

2010

5A

2035


Region 3

San Jose Creek (Santa Barbara County)

River & Stream

3315.310002,3315.310003  /  18060013
  • Chloride
    • No Source Analysis Available

9.9 Miles

2010

5A

2035
  • Enterococcus
    • A Source Unknown

9.9 Miles

2010

5A

2027
  • Oxygen, Dissolved
    • No Source Analysis Available

9.9 Miles

2014

5A

2035
  • Sodium
    • No Source Analysis Available

9.9 Miles

2010

5A

2035
  • Specific Conductivity
    • No Source Analysis Available

9.9 Miles

2014

5A

2035


Region 3

San Juan Creek (San Benito County)

River & Stream

30520050  /  18060002
  • Ammonia
    • No Source Analysis Available

7.9 Miles

2014

5A

2035
  • Arsenic
    • No Source Analysis Available

7.9 Miles

2020

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

7.9 Miles

2010

5B

2016
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

7.9 Miles

2014

5B

2016
  • Selenium
    • No Source Analysis Available

7.9 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

7.9 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

7.9 Miles

2010

5A

2035


Region 3

San Lorenzo Creek (Monterey County)

River & Stream

3309.400000,3309.700201,3309.700202,3309.700203,3309.700204,3309.700205,3309.700507,3309.700508,3309.700509,3309.700511  /  18060005
  • Boron
    • A Source Unknown

48 Miles

2002

5A

2027
  • Chloride
    • A Source Unknown
    • Grazing-Related Sources
    • Natural Sources

48 Miles

2010

5A

2027
  • Sodium
    • A Source Unknown

48 Miles

2010

5A

2027
  • Specific Conductivity
    • No Source Analysis Available

48 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

48 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

48 Miles

2010

5A

2035


Region 3

San Lorenzo River

River & Stream

3304.120101,3304.120102,3304.120201,3304.120202,3304.120203,3304.120503,3304.120600  /  18060001
  • Aluminum
    • No Source Analysis Available

29 Miles

2020

5A

2037
  • Benthic Community Effects
    • No Source Analysis Available

29 Miles

2020

5A

2035
  • Chlordane
    • No Source Analysis Available

29 Miles

2010

5A

2037
  • Chloride
    • Hydromodification
    • Other

29 Miles

2010

5A

2027
    The impaired reach is from the river mouth to Highway 1. This reach is tidally influenced.
  • Chlorpyrifos
    • A Source Unknown

29 Miles

2010

5B

2015
    Impaired length from San Lorenzo River Lagoon to confluence with Zayante Creek (approximately 7 miles).
  • Enterococcus
    • A Source Unknown

29 Miles

2014

5A

2027
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Nonpoint Source
    • Onsite Wastewater Systems (Septic Tanks)
    • Other Urban Runoff
    • Urban Runoff/Storm Sewers
    • Wastewater

29 Miles

2014

5B

2003
  • PCBs (Polychlorinated biphenyls)
    • No Source Analysis Available

29 Miles

2010

5A

2037
  • Sedimentation/Siltation
    • Construction/Land Development
    • Land Development
    • Silviculture
    • Urban Runoff/Storm Sewers

29 Miles

1998

5B

2004
  • Sodium
    • Hydromodification
    • Other

29 Miles

2010

5A

2027
    The impaired reach is from the river mouth to Highway 1. This reach is tidally influenced.
  • Temperature, water
    • No Source Analysis Available

29 Miles

2010

5A

2035
  • Toxicity
    • No Source Analysis Available

29 Miles

2014

5A

2035


Region 3

San Luis Obispo Creek (below Osos Street)

River & Stream

3310.240101,3310.240102,3310.240201,3310.240202  /  18060006
  • Benthic Community Effects
    • No Source Analysis Available

10 Miles

2014

5A

2035
  • Chloride
    • A Source Unknown

10 Miles

2010

5A

2027
  • Escherichia coli (E. coli)
    • No Source Analysis Available

10 Miles

2014

5A

2035
  • Nitrate
    • Agriculture
    • Municipal Point Sources
    • Natural Sources
    • Nonpoint Source
    • Other Urban Runoff

10 Miles

2014

5B

2007
  • Oxygen, Dissolved
    • No Source Analysis Available

10 Miles

2014

5A

2035
  • Sodium
    • A Source Unknown

10 Miles

2010

5A

2027
  • Toxicity
    • No Source Analysis Available

10 Miles

2014

5A

2035


Region 3

San Luis Obispo Creek Estuary

Estuary

3310.240201,3310.250002  / 
  • Enterococcus
    • No Source Analysis Available

3.6 Acres

2020

5A

2037


Region 3

San Luisito Creek

River & Stream

3310.220001,3310.220002  /  18060006
  • Escherichia coli (E. coli)
    • No Source Analysis Available

7.1 Miles

2014

5A

2035


Region 3

San Miguelito Creek

River & Stream

3314.100200,3314.100500  /  18060013
  • Chloride
    • No Source Analysis Available

10 Miles

2010

5A

2035
  • Nitrate
    • No Source Analysis Available

10 Miles

2010

5A

2025
  • Oxygen, Dissolved
    • No Source Analysis Available

10 Miles

2014

5A

2035
  • Sodium
    • No Source Analysis Available

10 Miles

2010

5A

2035
  • Temperature, water
    • No Source Analysis Available

10 Miles

2010

5A

2035
  • Toxicity
    • A Source Unknown

10 Miles

2014

5A

2023
  • pH
    • No Source Analysis Available

10 Miles

2010

5A

2035


Region 3

San Pedro Creek (Santa Barbara County)

River & Stream

3315.310002,3315.310003  /  18060013
  • Enterococcus
    • A Source Unknown

6.3 Miles

2010

5A

2027
  • Escherichia coli (E. coli)
    • No Source Analysis Available

6.3 Miles

2010

5A

2035
  • Fecal Coliform
    • No Source Analysis Available

6.3 Miles

2010

5A

2035
  • Sodium
    • No Source Analysis Available

6.3 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

6.3 Miles

2010

5A

2035


Region 3

San Simeon Creek

River & Stream

3310.130101,3310.130102,3310.130103  /  18060006
  • Chloride
    • No Source Analysis Available

5.7 Miles

2010

5A

2035
    Impaired length for Chloride is the Creek mouth to the first San Simeon Creek Road crossing, approximately 4 miles.
  • Nitrate
    • Wastewater - land disposal

5.7 Miles

2010

5A

2035
    The impaired reach extends from the creek mouth to the upper extent of the lagoon in the dry season, near Washburn Campground.
  • Oxygen, Dissolved
    • No Source Analysis Available

5.7 Miles

2014

5A

2035
  • Sodium
    • No Source Analysis Available

5.7 Miles

2010

5A

2035
    Impaired length for Sodium is the Creek mouth to the first San Simeon Creek Road crossing, approximately 4 miles.
  • Toxicity
    • No Source Analysis Available

5.7 Miles

2014

5A

2035


Region 3

San Vicente Creek (Santa Cruz County)

River & Stream

3304.110203  /  18060001
  • Aluminum
    • No Source Analysis Available

9.2 Miles

2020

5A

2037


Region 3

Santa Barbara Harbor

Bay & Harbor

3315.320001,3315.320002,3315.320003,3315.330002  /  18060013
  • Arsenic
    • No Source Analysis Available

98 Acres

2010

5A

2035
  • Copper
    • No Source Analysis Available

98 Acres

2010

5A

2035
  • Dieldrin
    • A Source Unknown

98 Acres

2010

5A

2027
  • Mercury
    • No Source Analysis Available

98 Acres

2010

5A

2035
  • Oxygen, Dissolved
    • A Source Unknown

98 Acres

2014

5A

2027


Region 3

Santa Cruz Harbor

Bay & Harbor

30412053  /  18060001
  • Arsenic
    • A Source Unknown

22 Acres

2010

5A

2027
  • Copper
    • A Source Unknown

22 Acres

2010

5A

2027
  • Dieldrin
    • A Source Unknown

22 Acres

2010

5A

2027
  • Oxygen, Dissolved
    • A Source Unknown

22 Acres

2014

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

22 Acres

2014

5A

2027


Region 3

Santa Margarita Lake

Lake & Reservoir

3309.811302,3309.811303,3309.811307  /  18060005
  • Mercury
    • No Source Analysis Available

720 Acres

2014

5A

2035


Region 3

Santa Maria River

River & Stream

3312.100101,3312.100300  /  18060008
  • Arsenic
    • No Source Analysis Available

25 Miles

2010

5A

2035
  • Benthic Community Effects
    • No Source Analysis Available

25 Miles

2020

5A

2035
  • Chloride
    • No Source Analysis Available

25 Miles

2010

5A

2035
  • Chlorpyrifos
    • Agriculture

25 Miles

2006

5B

2015
  • Cyhalothrin, Lambda
    • Agriculture
    • Urban Runoff/Storm Sewers

25 Miles

2014

5B

2015
  • Cypermethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

25 Miles

2014

5B

2015
  • DDD (Dichlorodiphenyldichloroethane)
    • Agriculture
    • Urban Runoff/Storm Sewers

25 Miles

1800

5B

2015
  • DDE (Dichlorodiphenyldichloroethylene)
    • Agriculture
    • Urban Runoff/Storm Sewers

25 Miles

1800

5B

2015
  • DDT (Dichlorodiphenyltrichloroethane)
    • Agriculture
    • Urban Runoff/Storm Sewers

25 Miles

2006

5B

2015
  • Diazinon
    • Agriculture

25 Miles

1800

5B

2015
  • Dieldrin
    • Agriculture

25 Miles

2006

5B

2015
  • Endrin
    • Agriculture
    • Urban Runoff/Storm Sewers

25 Miles

2006

5B

2015
  • Imidacloprid
    • No Source Analysis Available

25 Miles

2020

5A

2027
  • Lead
    • No Source Analysis Available

25 Miles

2010

5A

2035
  • Linuron
    • No Source Analysis Available

25 Miles

2020

5A

2035
  • Malathion
    • Agriculture

25 Miles

2014

5B

2015
  • Manganese
    • No Source Analysis Available

25 Miles

2026

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

25 Miles

2002

5B

2016
  • Oxyfluorfen
    • No Source Analysis Available

25 Miles

2020

5A

2035
  • Prometryn
    • No Source Analysis Available

25 Miles

2020

5A

2035
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

25 Miles

2020

5B

2015
  • Selenium
    • No Source Analysis Available

25 Miles

2020

5A

2035
  • Sodium
    • No Source Analysis Available

25 Miles

2010

5A

2035
  • Specific Conductivity
    • No Source Analysis Available

25 Miles

2014

5A

2035
  • Temperature, water
    • No Source Analysis Available

25 Miles

2010

5A

2035
  • Total Dissolved Solids
    • No Source Analysis Available

25 Miles

2020

5A

2035
  • Toxaphene
    • Agriculture

25 Miles

2026

5B

2015
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

25 Miles

2014

5B

2015
  • Turbidity
    • No Source Analysis Available

25 Miles

2010

5A

2035


Region 3

Santa Maria River Estuary

Estuary

3312.100300  /  18060008
  • Chlorpyrifos
    • Agriculture

5.6 Acres

2014

5B

2015
  • DDD (Dichlorodiphenyldichloroethane)
    • Agriculture
    • Urban Runoff/Storm Sewers

5.6 Acres

2014

5B

2015
  • DDE (Dichlorodiphenyldichloroethylene)
    • Agriculture

5.6 Acres

2014

5B

2015
  • Diazinon
    • Agriculture

5.6 Acres

2014

5B

2015
  • Malathion
    • Agriculture

5.6 Acres

2014

5B

2015
  • Oxyfluorfen
    • No Source Analysis Available

5.6 Acres

2020

5A

2035
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

5.6 Acres

2014

5B

2016
  • Prometryn
    • No Source Analysis Available

5.6 Acres

2014

5A

2035
  • Total Coliform
    • Collection System Failure
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

5.6 Acres

2010

5B

2013
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

5.6 Acres

2014

5B

2015
  • pH
    • No Source Analysis Available

5.6 Acres

2014

5A

2035


Region 3

Santa Monica Creek

River & Stream

3315.340003,3315.340004  /  18060013
  • Escherichia coli (E. coli)
    • No Source Analysis Available

5 Miles

2014

5A

2035
  • Temperature, water
    • No Source Analysis Available

5 Miles

2010

5A

2035
  • Turbidity
    • No Source Analysis Available

5 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

5 Miles

2010

5A

2035


Region 3

Santa Rita Creek (Monterey County)

River & Stream

3309.110000,3309.200003  /  18060011
  • Ammonia
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

11 Miles

2014

5B

2015
  • Clothianidin
    • No Source Analysis Available

11 Miles

2020

5A

2027
  • Cyhalothrin, Lambda
    • Agriculture
    • Urban Runoff/Storm Sewers

11 Miles

2020

5B

2018
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Domestic Animals/Livestock
    • Illegal dumping
    • Urban Runoff/Storm Sewers

11 Miles

2010

5B

2012
  • Fecal Coliform
    • Collection System Failure
    • Domestic Animals/Livestock
    • Illegal dumping
    • Urban Runoff/Storm Sewers

11 Miles

2010

5B

2012
  • Imidacloprid
    • No Source Analysis Available

11 Miles

2020

5A

2027
  • Lead
    • No Source Analysis Available

11 Miles

2020

5A

2035
  • Malathion
    • No Source Analysis Available

11 Miles

2020

5A

2025
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

11 Miles

2006

5B

2015
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

11 Miles

2014

5B

2015
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

11 Miles

2020

5B

2018
  • Sodium
    • No Source Analysis Available

11 Miles

2010

5A

2035
  • Temperature, water
    • No Source Analysis Available

11 Miles

2010

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

11 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

11 Miles

2010

5A

2025


Region 3

Santa Rosa Creek (San Luis Obispo County)

River & Stream

3310.140101,3310.140102,3310.140201  /  18060010
  • Oxygen, Dissolved
    • No Source Analysis Available

15 Miles

2014

5A

2035
  • Total Dissolved Solids
    • A Source Unknown

15 Miles

2014

5A

2027
  • Toxicity
    • No Source Analysis Available

15 Miles

2014

5A

2035


Region 3

Santa Ynez River (Cachuma Lake to below city of Lompoc)

River & Stream

3314.100102,3314.100500,3314.200101,3314.200103,3314.200104,3314.200203,3314.300201,3314.300203,3314.400102,3314.400701,(Total Count: 12)  /  18060010
  • Benthic Community Effects
    • No Source Analysis Available

41 Miles

2014

5A

2035
  • Molybdenum
    • No Source Analysis Available

41 Miles

2020

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

41 Miles

2014

5A

2025
  • Sedimentation/Siltation
    • A Source Unknown

41 Miles

2006

5A

2027
  • Sodium
    • A Source Unknown

41 Miles

2010

5A

2027
  • Temperature, water
    • No Source Analysis Available

41 Miles

2010

5A

2035
  • Total Dissolved Solids
    • A Source Unknown

41 Miles

2010

5A

2027
  • Toxicity
    • No Source Analysis Available

41 Miles

2014

5A

2035


Region 3

Santa Ynez River (above Lake Cachuma)

River & Stream

3314.510501,3314.510502,3314.510504,3314.510505  /  18060010
  • Temperature, water
    • No Source Analysis Available

22 Miles

2010

5A

2035
  • Toxicity
    • A Source Unknown

22 Miles

2014

5A

2023
  • Turbidity
    • No Source Analysis Available

22 Miles

2010

5A

2035


Region 3

Santa Ynez River (below city of Lompoc to Ocean)

River & Stream

3314.100500,3314.100602  /  18060010
  • Benthic Community Effects
    • No Source Analysis Available

6.7 Miles

2014

5A

2035
  • Chloride
    • No Source Analysis Available

6.7 Miles

2010

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

6.7 Miles

2010

5A

2035
    The spatial extent of the impaired segment is limited to the reach upstream of the 13th street bridge, where the salinity is less than 1 ppt in 95 percent or more of the samples.
  • Molybdenum
    • No Source Analysis Available

6.7 Miles

2020

5A

2035
  • Nitrate
    • No Source Analysis Available

6.7 Miles

2006

5A

2025
  • Oxygen, Dissolved
    • No Source Analysis Available

6.7 Miles

2014

5A

2025
  • Sedimentation/Siltation
    • A Source Unknown

6.7 Miles

1996

5A

2027
  • Sodium
    • No Source Analysis Available

6.7 Miles

2010

5A

2035
  • Temperature, water
    • No Source Analysis Available

6.7 Miles

2010

5A

2035
  • Total Dissolved Solids
    • No Source Analysis Available

6.7 Miles

2010

5A

2035
  • Toxicity
    • No Source Analysis Available

6.7 Miles

2014

5A

2035


Region 3

Schwan Lake

Lake & Reservoir

3304.120503  /  18060001
  • Escherichia coli (E. coli)
    • A Source Unknown

23 Acres

2010

5A

2027
  • Nutrients
    • A Source Unknown

23 Acres

1992

5A

2027
  • Total Coliform
    • A Source Unknown

23 Acres

2010

5A

2027


Region 3

Scott Creek Lagoon

River & Stream

3304.110202  / 
  • Chloride
    • Natural Sources

0.28 Miles

2014

5A

2027
  • Copper
    • No Source Analysis Available

0.28 Miles

2014

5A

2035
  • Sodium
    • Natural Sources

0.28 Miles

2014

5A

2027
  • Total Coliform
    • No Source Analysis Available

0.28 Miles

2020

5A

2035


Region 3

Shuman Canyon Creek

River & Stream

3313.000401,3313.000402  /  18060009
  • Sedimentation/Siltation
    • A Source Unknown

8.7 Miles

2006

5A

2027


Region 3

Sisquoc River

River & Stream

3312.100300,3312.200101,3312.200102,3312.200103,3312.200104,3312.200105,3312.200106,3312.200107,3312.200201,3312.200202,(Total Count: 20)  /  18060008
  • pH
    • Natural Sources

60 Miles

2010

5A

2035


Region 3

Sloans Canyon Creek

River & Stream

3314.100300,3314.100500  /  18060013
  • Ammonia
    • A Source Unknown

6.7 Miles

2014

5A

2023
  • Turbidity
    • A Source Unknown

6.7 Miles

2014

5A

2023
  • pH
    • A Source Unknown

6.7 Miles

2014

5A

2027


Region 3

Soda Lake

Saline Lake

31100050  /  18060003
  • Ammonia
    • A Source Unknown

2541 Acres

2014

5A

2023


Region 3

Soquel Creek

River & Stream

3304.130101,3304.130102,3304.130103,3304.130104,3304.130105  /  18060001
  • Enterococcus
    • A Source Unknown

18 Miles

2010

5A

2027
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Domestic Animals/Livestock
    • Domestic Pet Waste
    • Transient encampments
    • Urban Runoff/Storm Sewers

18 Miles

2010

5B

2010
  • Oxygen, Dissolved
    • No Source Analysis Available

18 Miles

2014

5A

2035
  • Toxicity
    • No Source Analysis Available

18 Miles

2014

5A

2035


Region 3

Soquel Lagoon

Estuary

3304.130104  /  18060001
  • Indicator Bacteria
    • A Source Unknown

1.8 Acres

2014

5B

2010
  • Oxygen, Dissolved
    • No Source Analysis Available

1.8 Acres

2020

5A

2035
  • Sedimentation/Siltation
    • A Source Unknown

1.8 Acres

1992

5A

2027
  • Temperature, water
    • No Source Analysis Available

1.8 Acres

2020

5A

2035


Region 3

Stenner Creek

River & Stream

3310.240102,3310.240103  /  18060006
  • Escherichia coli (E. coli)
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

7.7 Miles

2014

5A

2035
  • pH
    • No Source Analysis Available

7.7 Miles

2010

5A

2035


Region 3

Struve Slough

River & Stream

3305.100301  /  18060002
  • Chlorophyll-a
    • No Source Analysis Available

2.8 Miles

2010

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

2.8 Miles

2014

5A

2035
  • Fecal Coliform
    • See TMDL documentation

2.8 Miles

2014

5B

2007
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

2.8 Miles

2014

5B

2016
  • Toxicity
    • A Source Unknown

2.8 Miles

2014

5A

2023
  • Turbidity
    • No Source Analysis Available

2.8 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

2.8 Miles

2010

5A

2035


Region 3

Sycamore Creek

River & Stream

3315.320002  /  18060013
  • Chloride
    • No Source Analysis Available

3.9 Miles

2010

5A

2035
  • Copper
    • No Source Analysis Available

3.9 Miles

2010

5A

2035
  • Oxygen, Dissolved
    • No Source Analysis Available

3.9 Miles

2014

5A

2035
  • Sodium
    • No Source Analysis Available

3.9 Miles

2010

5A

2035
  • Turbidity
    • No Source Analysis Available

3.9 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

3.9 Miles

2010

5A

2035


Region 3

Tecolote Creek (Santa Barbara County)

River & Stream

3315.100103  /  18060013
  • Boron
    • No Source Analysis Available

6.9 Miles

2010

5A

2035
  • Chloride
    • No Source Analysis Available

6.9 Miles

2010

5A

2035
  • Copper
    • No Source Analysis Available

6.9 Miles

2020

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

6.9 Miles

2014

5A

2035
    Spatial extent is limited to the monitoring station
  • Oxygen, Dissolved
    • No Source Analysis Available

6.9 Miles

2014

5A

2035
  • Sodium
    • No Source Analysis Available

6.9 Miles

2010

5A

2035
  • Specific Conductivity
    • No Source Analysis Available

6.9 Miles

2014

5A

2035
  • Total Dissolved Solids
    • No Source Analysis Available

6.9 Miles

2020

5A

2035


Region 3

Tecolotito Creek

River & Stream

3315.310003  / 
  • Chloride
    • A Source Unknown

0.87 Miles

2014

5A

2027
  • Enterococcus
    • A Source Unknown

0.87 Miles

2014

5A

2027
  • Nitrate
    • Agriculture

0.87 Miles

2014

5B

2014
  • Sodium
    • A Source Unknown

0.87 Miles

2014

5A

2027


Region 3

Tembladero Slough

River & Stream

3309.110000  /  18060011
  • Aluminum
    • No Source Analysis Available

3.4 Miles

2020

5A

2037
  • Bifenthrin
    • Agriculture
    • Urban Runoff/Storm Sewers

3.4 Miles

2014

5B

2018
  • Chlordane
    • No Source Analysis Available

3.4 Miles

2014

5A

2035
  • Chlorophyll-a
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.4 Miles

2010

5B

2015
  • Chlorpyrifos
    • Agriculture

3.4 Miles

2010

5B

2011
  • Chromium
    • No Source Analysis Available

3.4 Miles

2014

5A

2035
  • Clothianidin
    • No Source Analysis Available

3.4 Miles

2020

5A

2027
  • Copper
    • No Source Analysis Available

3.4 Miles

2010

5A

2035
  • Cypermethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

3.4 Miles

2014

5B

2018
  • DDD (Dichlorodiphenyldichloroethane)
    • No Source Analysis Available

3.4 Miles

2014

5A

2035
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

3.4 Miles

2014

5A

2035
  • Diazinon
    • Agriculture

3.4 Miles

2010

5B

2011
  • Dieldrin
    • No Source Analysis Available

3.4 Miles

2010

5A

2035
  • Disulfoton
    • No Source Analysis Available

3.4 Miles

2020

5A

2035
  • Enterococcus
    • A Source Unknown

3.4 Miles

2010

5A

2027
  • Imidacloprid
    • No Source Analysis Available

3.4 Miles

2020

5A

2027
  • Lead
    • No Source Analysis Available

3.4 Miles

2010

5A

2035
  • Malathion
    • No Source Analysis Available

3.4 Miles

2014

5A

2025
  • Methomyl
    • No Source Analysis Available

3.4 Miles

2020

5A

2035
  • Nickel
    • No Source Analysis Available

3.4 Miles

2010

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.4 Miles

2010

5B

2015
  • Oxyfluorfen
    • No Source Analysis Available

3.4 Miles

2020

5A

2035
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

3.4 Miles

2014

5B

2015
  • Permethrin
    • Agriculture
    • Urban Runoff/Storm Sewers

3.4 Miles

2014

5B

2018
  • Pyrethroids
    • Agriculture
    • Urban Runoff/Storm Sewers

3.4 Miles

2020

5B

2018
  • Selenium
    • No Source Analysis Available

3.4 Miles

2020

5A

2035
  • Thiamethoxam
    • No Source Analysis Available

3.4 Miles

2020

5A

2027
  • Total Coliform
    • No Source Analysis Available

3.4 Miles

2010

5A

2035
  • Toxicity
    • Agriculture
    • Urban Runoff/Storm Sewers

3.4 Miles

2014

5B

2018
  • Turbidity
    • No Source Analysis Available

3.4 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

3.4 Miles

2010

5A

2035


Region 3

Tequisquita Slough

River & Stream

3305.300200  /  18060002
  • Chlorophyll-a
    • No Source Analysis Available

7.3 Miles

2010

5A

2035
  • Fecal Coliform
    • Collection System Failure
    • Domestic Animals/Livestock
    • Urban Runoff/Storm Sewers

7.3 Miles

2002

5B

2010
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

7.3 Miles

2020

5B

2016
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources

7.3 Miles

2014

5B

2016
  • Selenium
    • No Source Analysis Available

7.3 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

7.3 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

7.3 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

7.3 Miles

2010

5A

2035


Region 3

Toro Creek

River & Stream

3310.180000  /  18060006
  • Copper
    • No Source Analysis Available

11 Miles

2020

5A

2035


Region 3

Tres Pinos Creek

River & Stream

3305.300200,3305.500403,3305.500405,3305.500406,3305.500407,3305.500703,3305.500705  /  18060002
  • Boron
    • No Source Analysis Available

30 Miles

2010

5A

2035
  • Escherichia coli (E. coli)
    • No Source Analysis Available

30 Miles

2010

5A

2035
  • Sodium
    • No Source Analysis Available

30 Miles

2010

5A

2035
  • Turbidity
    • No Source Analysis Available

30 Miles

2010

5A

2035
  • pH
    • Natural Sources
    • No Source Analysis Available

30 Miles

2010

5A

2035


Region 3

Tularcitos Creek

River & Stream

3307.000302,3307.000303,3307.000304  /  18060012
  • Chloride
    • No Source Analysis Available

14 Miles

2010

5A

2035
  • Sodium
    • No Source Analysis Available

14 Miles

2010

5A

2035


Region 3

Unnamed tributary to Orcutt Creek

River & Stream

3312.100300  /  18060008
  • Ammonia
    • Agriculture
    • Grazing-Related Sources
    • Urban Runoff/Storm Sewers

4.5 Miles

2014

5B

2016
  • Benthic Community Effects
    • No Source Analysis Available

4.5 Miles

2020

5A

2035
  • Chlorpyrifos
    • Agriculture

4.5 Miles

2014

5B

2015
  • Diazinon
    • Agriculture

4.5 Miles

2014

5B

2015
  • Nitrate
    • Agriculture
    • Grazing-Related Sources
    • Urban Runoff/Storm Sewers

4.5 Miles

2014

5B

2016
  • Toxicity
    • Agriculture

4.5 Miles

2014

5B

2015
  • Turbidity
    • A Source Unknown

4.5 Miles

2014

5A

2023


Region 3

Uvas Creek (above Uvas Reservoir)

River & Stream

3305.200101,3305.200105  /  18060002
  • Temperature, water
    • No Source Analysis Available

8.2 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

8.2 Miles

2010

5A

2035


Region 3

Uvas Creek (below Uvas Reservoir)

River & Stream

3305.200102,3305.200201,3305.300100,3305.300200  /  18060002
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

14 Miles

2014

5B

2016
  • Turbidity
    • No Source Analysis Available

14 Miles

2010

5A

2035


Region 3

Uvas Reservoir

Lake & Reservoir

3305.200101,3305.200102,3305.200201  /  18060002
  • Mercury
    • No Source Analysis Available

272 Acres

2010

5A

2035


Region 3

Valencia Creek

River & Stream

3304.130201,3304.130203  /  18060001
  • Aluminum
    • No Source Analysis Available

6.3 Miles

2020

5A

2037
  • Escherichia coli (E. coli)
    • Collection System Failure
    • Domestic Animals/Livestock
    • Domestic Pet Waste
    • Grazing-Related Sources
    • Natural Sources
    • Urban Runoff/Storm Sewers

6.3 Miles

2014

5A

2035
  • Sedimentation/Siltation
    • A Source Unknown

6.3 Miles

2002

5A

2027


Region 3

Waddell Creek Lagoon

River & Stream

3304.110101  / 
  • Arsenic
    • No Source Analysis Available

0.39 Miles

2014

5A

2035
  • Chloride
    • Natural Sources

0.39 Miles

2014

5A

2027
  • Selenium
    • No Source Analysis Available

0.39 Miles

2020

5A

2035
  • Sodium
    • Natural Sources

0.39 Miles

2014

5A

2027
  • pH
    • No Source Analysis Available

0.39 Miles

2014

5A

2035


Region 3

Warden Creek

River & Stream

3310.230003  /  18060006
  • Nitrate
    • Agriculture
    • Grazing-Related Sources

6 Miles

2010

5B

2005
  • Oxygen, Dissolved
    • No Source Analysis Available

6 Miles

2014

5A

2035
  • Toxicity
    • No Source Analysis Available

6 Miles

2014

5A

2035


Region 3

Watsonville Creek

River & Stream

30510030  /  18060011
  • Escherichia coli (E. coli)
    • No Source Analysis Available

4.8 Miles

2010

5A

2035
  • Nitrate
    • No Source Analysis Available

4.8 Miles

2010

5A

2025
  • Oxygen, Dissolved
    • No Source Analysis Available

4.8 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

4.8 Miles

2010

5A

2035
  • pH
    • No Source Analysis Available

4.8 Miles

2010

5A

2035


Region 3

Watsonville Slough

River & Stream

3305.100301  /  18060002
  • Aluminum
    • No Source Analysis Available

6.2 Miles

2020

5A

2037
  • Chlorpyrifos
    • No Source Analysis Available

6.2 Miles

2010

5A

2035
  • Copper
    • No Source Analysis Available

6.2 Miles

2020

5A

2035
  • DDE (Dichlorodiphenyldichloroethylene)
    • No Source Analysis Available

6.2 Miles

2014

5A

2035
  • Imidacloprid
    • No Source Analysis Available

6.2 Miles

2020

5A

2027
  • Malathion
    • No Source Analysis Available

6.2 Miles

2014

5A

2035
  • Nickel
    • No Source Analysis Available

6.2 Miles

2020

5A

2035
  • Nitrate
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

6.2 Miles

2014

5B

2016
  • Oxygen, Dissolved
    • Agriculture
    • Domestic Animals/Livestock
    • Natural Sources
    • Urban Runoff/Storm Sewers

6.2 Miles

2014

5B

2016
  • Pyrethroids
    • No Source Analysis Available

6.2 Miles

2020

5A

2035
  • Toxicity
    • No Source Analysis Available

6.2 Miles

2014

5A

2035
  • Turbidity
    • No Source Analysis Available

6.2 Miles

2010

5A

2035


Region 3

Willow Creek (Monterey County)

River & Stream

3308.000602,3308.000603  /  18060006
  • pH
    • No Source Analysis Available

4.8 Miles

2010

5A

2035


Region 3

Yerba Buena Creek

River & Stream

3309.811401  /  18060005
  • Oxygen, Dissolved
    • No Source Analysis Available

6 Miles

2014

5A

2035


Region 3

Zayante Creek

River & Stream

3304.120202,3304.120401,3304.120402  /  18060001
  • Chlorpyrifos
    • A Source Unknown

9.3 Miles

2010

5B

2015
  • Sedimentation/Siltation
    • Channel Erosion
    • Habitat Modification
    • Other Urban Runoff
    • Removal of Riparian Vegetation
    • Road Construction

9.3 Miles

2002

5B

2004
  • Toxicity
    • No Source Analysis Available

9.3 Miles

2014

5A

2035


Region 4

Alamitos Bay

Bay & Harbor

4405.120000,4405.150000,4412.100000,4801.110000  /  18070104
  • Copper
    • A Source Unknown

328 Acres

2014

5A

2037
  • DDD (Dichlorodiphenyldichloroethane)
    • A Source Unknown

328 Acres

2024

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

328 Acres

2024

5A

2037
  • Indicator Bacteria
    • A Source Unknown

328 Acres

2006

5B

2022
  • Oxygen, Dissolved
    • A Source Unknown

328 Acres

2014

5A

2037
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

328 Acres

2024

5A

2037


Region 4

Alhambra Wash

River & Stream

40531000  /  18070105
  • Ammonia
    • Other

6.9 Miles

2014

5A

2027


Region 4

Alondra Park Lake

Lake & Reservoir

4411.010000  /  18070104
  • Mercury
    • A Source Unknown

8.5 Acres

2014

5A

2037


Region 4

Artesia-Norwalk Drain

River & Stream

40515010  /  18070104
  • Indicator Bacteria
    • A Source Unknown

2.5 Miles

2010

5B

2016
  • Selenium
    • A Source Unknown

2.5 Miles

2010

5A

2021


Region 4

Arundell Barranca (Ventura County)

River & Stream

40311000  /  18070103
  • Indicator Bacteria
    • A Source Unknown

5.1 Miles

2014

5A

2027


Region 4

Balboa Lake

Lake & Reservoir

4412.210000  /  18070105
  • Oxygen, Dissolved
    • A Source Unknown

28 Acres

2014

5A

2027
  • Temperature, water
    • A Source Unknown

28 Acres

2014

5A

2037
  • Toxicity
    • A Source Unknown

28 Acres

2014

5A

2027


Region 4

Ballona Creek

River & Stream

40513000  /  18070104
  • Aluminum
    • A Source Unknown

6.5 Miles

2014

5A

2037
  • Bifenthrin
    • A Source Unknown

6.5 Miles

2014

5A

2037
  • Chlordane
    • A Source Unknown

6.5 Miles

2026

5A

2037
    LOE 2372 on which the original listing was based has been reviewed and found to not contain any data for Ballona Creek and was incorrectly applied to this waterbody.
  • Copper
    • A Source Unknown

6.5 Miles

1800

5B

2005
  • Cyanide
    • A Source Unknown

6.5 Miles

1996

5A

2037
  • Cyfluthrin
    • A Source Unknown

6.5 Miles

2014

5A

2037
  • Cyhalothrin, Lambda
    • A Source Unknown

6.5 Miles

2014

5A

2037
  • Cypermethrin
    • A Source Unknown
    • Agriculture

6.5 Miles

2014

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

6.5 Miles

2026

5A

2037
  • Deltamethrin
    • A Source Unknown

6.5 Miles

2014

5A

2037
  • Esfenvalerate/Fenvalerate
    • A Source Unknown

6.5 Miles

2014

5A

2037
  • Fipronil
    • A Source Unknown

6.5 Miles

2014

5A

2037
  • Imidacloprid
    • A Source Unknown

6.5 Miles

2024

5A

2037
  • Indicator Bacteria
    • Nonpoint Source
    • Point Source

6.5 Miles

2014

5B

2007
  • Lead
    • A Source Unknown

6.5 Miles

2002

5B

2005
  • Permethrin
    • A Source Unknown

6.5 Miles

2014

5A

2037
  • Pyrethroids
    • A Source Unknown

6.5 Miles

2024

5A

2037
  • Toxicity
    • A Source Unknown

6.5 Miles

1996

5B

2005
  • Trash
    • A Source Unknown

6.5 Miles

1996

5B

2001
  • Viruses (enteric)
    • Nonpoint Source
    • Point Source

6.5 Miles

1996

5B

2007
  • Zinc
    • A Source Unknown

6.5 Miles

1996

5B

2005
  • pH
    • A Source Unknown

6.5 Miles

2026

5A

2037


Region 4

Bear Creek (Los Angeles County)

River & Stream

4405.430000  /  18070106
  • pH
    • A Source Unknown

11 Miles

2014

5A

2037


Region 4

Boulder Creek (Ventura County)

River & Stream

40331000  /  18070102
  • Bifenthrin
    • A Source Unknown

6.7 Miles

2014

5A

2037
  • Chlordane
    • A Source Unknown

6.7 Miles

2014

5A

2037
  • Cyfluthrin
    • A Source Unknown

6.7 Miles

2014

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

6.7 Miles

2014

5A

2037
  • Fenpropathrin
    • A Source Unknown

6.7 Miles

2014

5A

2037
  • Malathion
    • A Source Unknown

6.7 Miles

2014

5A

2037
  • Nitrogen, Nitrate
    • A Source Unknown

6.7 Miles

2014

5A

2037
  • Permethrin
    • A Source Unknown

6.7 Miles

2014

5A

2037
  • Pyrethroids
    • A Source Unknown

6.7 Miles

2024

5A

2037
  • Toxicity
    • A Source Unknown

6.7 Miles

2014

5A

2027


Region 4

Bouquet Canyon Creek (below Bouqet Reservoir)

River & Stream

40352000  /  18070102
  • Bifenthrin
    • A Source Unknown

19 Miles

2014

5A

2037
  • Cyfluthrin
    • A Source Unknown

19 Miles

2014

5A

2037
  • Cyhalothrin, Lambda
    • A Source Unknown

19 Miles

2014

5A

2037
  • Cypermethrin
    • A Source Unknown

19 Miles

2014

5A

2037
  • Deltamethrin
    • A Source Unknown

19 Miles

2014

5A

2037
  • Esfenvalerate/Fenvalerate
    • A Source Unknown

19 Miles

2014

5A

2037
  • Fipronil
    • A Source Unknown

19 Miles

2014

5A

2037
  • Fipronil Sulfone
    • A Source Unknown

19 Miles

2014

5A

2037
  • Imidacloprid
    • A Source Unknown

19 Miles

2024

5A

2037
  • Permethrin
    • A Source Unknown

19 Miles

2014

5A

2037
  • Pyrethroids
    • A Source Unknown

19 Miles

2024

5A

2037
  • Temperature, water
    • A Source Unknown

19 Miles

2014

5A

2037
  • Toxicity
    • A Source Unknown

19 Miles

2014

5A

2037


Region 4

Bull Creek (Los Angeles County)

River & Stream

40521000  /  18070105
  • Chlorine
    • A Source Unknown

6.6 Miles

2024

5A

2037
  • Copper
    • A Source Unknown

6.6 Miles

2024

5A

2037
  • Indicator Bacteria
    • Domestic Animals/Livestock
    • See TMDL documentation
    • Urban Runoff/Storm Sewers

6.6 Miles

2024

5B

2012
  • Toxicity
    • A Source Unknown

6.6 Miles

2014

5A

2027


Region 4

Burbank Western Channel

River & Stream

40521000  /  18070105
  • Ammonia
    • See TMDL documentation

13 Miles

1996

5B

2004
  • Chlorine
    • A Source Unknown

13 Miles

2024

5A

2037
  • Copper
    • A Source Unknown

13 Miles

2006

5B

2005
  • Indicator Bacteria
    • A Source Unknown

13 Miles

2010

5B

2012
  • Lead
    • A Source Unknown

13 Miles

2006

5B

2005
  • Selenium
    • A Source Unknown

13 Miles

2010

5A

2021
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

13 Miles

1996

5B

2008
  • pH
    • A Source Unknown

13 Miles

2024

5A

2037


Region 4

Calleguas Creek Reach 10 (Aroyo Conejo: Conejo Creek to North Fork Arroyo Conejo)

River & Stream

4408.230000,4408.240000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

2.8 Miles

1996

5B

2003
  • Bifenthrin
    • A Source Unknown

2.8 Miles

2024

5A

2037
  • ChemA (tissue)
    • Agriculture-storm runoff

2.8 Miles

1996

5B

2006
  • Chlordane
    • A Source Unknown

2.8 Miles

1996

5B

2006
  • Chloride
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

2.8 Miles

2002

5B

2008
  • Chlorpyrifos
    • A Source Unknown

2.8 Miles

2006

5B

2006
  • Cyfluthrin
    • A Source Unknown

2.8 Miles

2024

5A

2037
  • Cypermethrin
    • A Source Unknown

2.8 Miles

2024

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

2.8 Miles

2026

5B

2006
  • DDT (tissue)
    • Nonpoint Source

2.8 Miles

2016

5B

2006
  • Indicator Bacteria
    • A Source Unknown

2.8 Miles

2014

5A

2027
  • Malathion
    • A Source Unknown

2.8 Miles

2014

5A

2029
  • Nitrogen, Nitrite
    • Nonpoint Source
    • Point Source

2.8 Miles

1996

5B

2003
  • PCBs (Polychlorinated biphenyls)
    • See TMDL documentation

2.8 Miles

1996

5B

2006
  • Permethrin
    • A Source Unknown

2.8 Miles

2024

5A

2037
  • Pyrethroids
    • A Source Unknown

2.8 Miles

2024

5A

2037
  • Sulfates
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

2.8 Miles

2002

5B

2008
  • Total Dissolved Solids
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

2.8 Miles

2002

5B

2008
  • Toxaphene (tissue & sediment)
    • Nonpoint Source

2.8 Miles

1988

5B

2006
  • Toxicity
    • Nonpoint Source
    • Point Source

2.8 Miles

1996

5B

2010
  • Trash
    • A Source Unknown

2.8 Miles

2010

5A

2021


Region 4

Calleguas Creek Reach 11 (Arroyo Santa Rosa)

River & Stream

4408.230000,4408.250000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

9.3 Miles

1996

5B

2003
  • ChemA (tissue)
    • Agriculture-storm runoff

9.3 Miles

1996

5B

2006
  • Chlordane
    • A Source Unknown

9.3 Miles

1996

5B

2006
  • DDT (tissue)
    • Nonpoint Source

9.3 Miles

2016

5B

2006
  • Dieldrin
    • A Source Unknown

9.3 Miles

2006

5B

2006
  • Endosulfan (tissue)
    • Agriculture-storm runoff

9.3 Miles

2016

5B

2006
  • Indicator Bacteria
    • A Source Unknown

9.3 Miles

2014

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

9.3 Miles

1996

5B

2006
  • Sedimentation/Siltation
    • Agriculture
    • Natural Sources

9.3 Miles

2002

5A

2005
  • Sulfates
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

9.3 Miles

2002

5B

2008
  • Total Dissolved Solids
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

9.3 Miles

2002

5B

2008
  • Toxaphene (tissue & sediment)
    • Nonpoint Source
    • Point Source

9.3 Miles

2016

5B

2006
  • Toxicity
    • Nonpoint Source
    • Point Source

9.3 Miles

1996

5B

2005


Region 4

Calleguas Creek Reach 12 (North Fork Arroyo Conejo)

River & Stream

4408.240000  /  18070103
  • Ammonia
    • A Source Unknown

5.5 Miles

1996

5B

2003
  • Chlordane (tissue)
    • Nonpoint Source

5.5 Miles

1996

5B

2006
  • Chloride
    • Agriculture
    • Atmospheric Deposition
    • Groundwater Withdrawal
    • See TMDL documentation

5.5 Miles

2024

5B

2008
  • DDT (tissue)
    • Nonpoint Source

5.5 Miles

2016

5B

2006
  • Dieldrin
    • A Source Unknown

5.5 Miles

2006

5B

2006
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

5.5 Miles

1996

5B

2006
  • Selenium
    • A Source Unknown

5.5 Miles

2014

5B

2007
  • Sulfates
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

5.5 Miles

2002

5B

2008
  • Temperature, water
    • A Source Unknown

5.5 Miles

2014

5A

2037
  • Total Dissolved Solids
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

5.5 Miles

2002

5B

2008
  • Toxaphene
    • A Source Unknown

5.5 Miles

1988

5B

2006


Region 4

Calleguas Creek Reach 13 (Arroyo Conejo above North Fork Arroyo Conejo)

River & Stream

4408.240000,4408.280000  /  18070104
  • Ammonia
    • Nonpoint Source
    • Point Source

17 Miles

1996

5B

2003
  • Bifenthrin
    • A Source Unknown

17 Miles

2024

5A

2037
  • ChemA (tissue)
    • Agriculture-storm runoff

17 Miles

1996

5B

2006
  • Chlordane
    • A Source Unknown

17 Miles

1996

5B

2006
  • Chloride
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

17 Miles

2002

5B

2008
  • Cyfluthrin
    • A Source Unknown

17 Miles

2024

5A

2037
  • Cypermethrin
    • A Source Unknown

17 Miles

2024

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

17 Miles

2026

5B

2006
  • DDT (tissue)
    • Nonpoint Source

17 Miles

2016

5B

2005
  • Deltamethrin
    • A Source Unknown

17 Miles

2024

5A

2037
  • Endosulfan (tissue)
    • Agriculture-storm runoff

17 Miles

2016

5B

2006
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

17 Miles

1996

5B

2006
  • Permethrin
    • A Source Unknown

17 Miles

2024

5A

2037
  • Pyrethroids
    • A Source Unknown

17 Miles

2024

5A

2037
  • Toxaphene (tissue & sediment)
    • Nonpoint Source

17 Miles

2016

5B

2006
  • Toxicity
    • Nonpoint Source
    • Point Source

17 Miles

1996

5B

2006


Region 4

Calleguas Creek Reach 2 (Estuary to Potrero Rd.)

River & Stream

4408.110000,4408.120000,4408.130000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

4.3 Miles

1996

5B

2003
  • Bifenthrin
    • A Source Unknown

4.3 Miles

2014

5A

2037
  • ChemA
    • Agriculture-storm runoff

4.3 Miles

2026

5B

2006
    Historical use of pesticides and lubricants.
  • Chlordane
    • A Source Unknown

4.3 Miles

1800

5B

2006
  • Copper
    • Nonpoint Source

4.3 Miles

2026

5B

2007
  • Cypermethrin
    • A Source Unknown

4.3 Miles

2014

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • Nonpoint Source

4.3 Miles

1996

5B

2005
  • Dieldrin
    • A Source Unknown

4.3 Miles

2006

5B

2006
  • Dimethoate
    • A Source Unknown

4.3 Miles

2014

5A

2037
  • Endosulfan
    • Agriculture-storm runoff

4.3 Miles

1988

5B

2006
  • Indicator Bacteria
    • A Source Unknown

4.3 Miles

2014

5A

2006
    Area affected is at the mouth of the creek.
  • Malathion
    • A Source Unknown

4.3 Miles

2014

5A

2037
  • Nitrogen, Nitrate
    • A Source Unknown

4.3 Miles

2014

5B

2003
  • PCBs (Polychlorinated biphenyls)
    • Nonpoint Source
    • Point Source

4.3 Miles

1800

5B

2005
  • Permethrin
    • A Source Unknown

4.3 Miles

2014

5A

2037
  • Pyrethroids
    • A Source Unknown

4.3 Miles

2024

5A

2037
  • Sedimentation/Siltation
    • A Source Unknown

4.3 Miles

2002

5A

2005
  • Selenium
    • Agriculture
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Natural Sources
    • Other Urban Runoff
    • See TMDL documentation

4.3 Miles

2024

5B

2007
  • Toxaphene
    • Nonpoint Source

4.3 Miles

1800

5B

2005
  • Toxicity
    • Nonpoint Source
    • Point Source

4.3 Miles

2014

5B

2005
  • Trash
    • A Source Unknown

4.3 Miles

2010

5A

2021


Region 4

Calleguas Creek Reach 3 (Potrero Rd. to Conejo Creek)

River & Stream

4408.120000  /  18070103
  • Aluminum
    • A Source Unknown

3.5 Miles

2014

5A

2037
  • Bifenthrin
    • A Source Unknown

3.5 Miles

2014

5A

2037
  • Chlordane
    • A Source Unknown

3.5 Miles

1996

5B

2006
  • Chloride
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

3.5 Miles

2002

5B

2008
  • Chlorpyrifos
    • A Source Unknown

3.5 Miles

2014

5B

2006
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

3.5 Miles

1996

5B

2006
  • Diazinon
    • A Source Unknown

3.5 Miles

2014

5B

2006
  • Dichlorvos
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • Dieldrin
    • A Source Unknown

3.5 Miles

2006

5B

2006
  • Disulfoton
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • Endosulfan sulfate
    • A Source Unknown

3.5 Miles

2024

5B

2006
  • Fenthion
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • Heptachlor
    • A Source Unknown

3.5 Miles

2024

5B

2006
  • Heptachlor epoxide
    • A Source Unknown

3.5 Miles

2024

5B

2006
  • Indicator Bacteria
    • A Source Unknown

3.5 Miles

2014

5A

2027
  • Iron
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • Malathion
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • Methoxychlor
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • Naled
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • Nitrate and Nitrite
    • Nonpoint Source
    • Point Source

3.5 Miles

1996

5B

2003
  • Oil and Grease
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

3.5 Miles

1996

5B

2006
  • Parathion
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • Pyrethroids
    • A Source Unknown

3.5 Miles

2024

5A

2037
  • Sedimentation/Siltation
    • A Source Unknown

3.5 Miles

2002

5A

2015
  • Total Dissolved Solids
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

3.5 Miles

2002

5B

2008
  • Toxaphene
    • A Source Unknown

3.5 Miles

1988

5B

2019
  • Toxicity
    • A Source Unknown

3.5 Miles

2024

5B

2006
  • Trash
    • A Source Unknown

3.5 Miles

2010

5A

2021
  • Turbidity
    • A Source Unknown

3.5 Miles

2024

5A

2037


Region 4

Calleguas Creek Reach 4 (Revolon Slough)

River & Stream

4408.110000  /  18070103
  • Aluminum
    • A Source Unknown

8 Miles

2014

5A

2037
  • ChemA (tissue)
    • Agriculture-storm runoff

8 Miles

1996

5B

2006
    Historical use of pesticides and lubricants.
  • Chlordane (tissue & sediment)
    • Nonpoint Source

8 Miles

2016

5B

2005
  • Chlorpyrifos (tissue)
    • Nonpoint Source

8 Miles

2016

5B

2005
    Chlorpyrifos also exceeds in water.
  • Diazinon
    • A Source Unknown

8 Miles

2006

5B

2006
  • Dieldrin (tissue)
    • Nonpoint Source

8 Miles

2006

5B

2005
  • Dimethoate
    • A Source Unknown

8 Miles

2014

5A

2037
  • Endosulfan (tissue & sediment)
    • Agriculture-storm runoff

8 Miles

2006

5B

2006
  • Fecal Coliform
    • A Source Unknown

8 Miles

2016

5A

2006
  • Fenpropathrin
    • A Source Unknown

8 Miles

2014

5A

2037
  • Nitrate as Nitrate (NO3)
    • Nonpoint Source
    • Point Source

8 Miles

1996

5B

2003
  • Nitrogen
    • Nonpoint Source

8 Miles

2002

5B

2003
  • PCBs (Polychlorinated biphenyls) (tissue)
    • Nonpoint Source

8 Miles

2016

5B

2005
  • Sedimentation/Siltation
    • A Source Unknown

8 Miles

2002

5A

2015
  • Selenium
    • Nonpoint Source

8 Miles

2002

5B

2007
  • Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
    • A Source Unknown

8 Miles

2014

5B

2005
  • Toxaphene (tissue & sediment)
    • Nonpoint Source

8 Miles

2016

5B

2005
  • Toxicity
    • A Source Unknown

8 Miles

1996

5B

2005
  • Trash
    • Agriculture-storm runoff
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

8 Miles

2002

5B

2008


Region 4

Calleguas Creek Reach 5 (Beardsley Channel)

River & Stream

4408.110000,4408.210000  /  18070103
  • ChemA (tissue)
    • Agriculture-storm runoff

3.5 Miles

1996

5B

2006
  • Chlordane (tissue & sediment)
    • Nonpoint Source

3.5 Miles

2016

5B

2005
  • Chlorpyrifos (tissue)
    • Nonpoint Source

3.5 Miles

2016

5B

2006
    Chlorpyrifos also exceeds in water.
  • DDT (tissue & sediment)
    • Nonpoint Source

3.5 Miles

2016

5B

2005
  • Diazinon
    • A Source Unknown

3.5 Miles

2006

5B

2006
  • Dieldrin (tissue)
    • Nonpoint Source

3.5 Miles

2016

5B

2005
  • Endosulfan (tissue & sediment)
    • Agriculture-storm runoff

3.5 Miles

2016

5B

2006
  • Nitrogen
    • Nonpoint Source

3.5 Miles

2002

5B

2003
  • PCBs (Polychlorinated biphenyls) (tissue)
    • Nonpoint Source

3.5 Miles

2016

5B

2005
  • Sedimentation/Siltation
    • A Source Unknown

3.5 Miles

2002

5A

2005
  • Toxaphene (tissue & sediment)
    • Nonpoint Source

3.5 Miles

2016

5B

2005
  • Toxicity
    • Nonpoint Source

3.5 Miles

1996

5B

2006
  • Trash
    • Agriculture-storm runoff
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

3.5 Miles

2002

5B

2008


Region 4

Calleguas Creek Reach 6 (Conejo Creek to Hitch Rd.)

River & Stream

4408.120000,4408.220000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

15 Miles

1996

5B

2003
  • Bifenthrin
    • A Source Unknown

15 Miles

2014

5A

2037
  • Chlordane
    • A Source Unknown

15 Miles

1996

5B

2006
  • Chloride
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

15 Miles

2002

5B

2008
  • Chlorpyrifos
    • A Source Unknown

15 Miles

2006

5B

2006
  • Cyfluthrin
    • A Source Unknown

15 Miles

2024

5A

2037
  • Cypermethrin
    • A Source Unknown

15 Miles

2014

5A

2037
  • DDT (Dichlorodiphenyltrichloroethane)
    • A Source Unknown

15 Miles

2026

5B

2006
  • DDT (sediment)
    • Nonpoint Source

15 Miles

2016

5B

2006
  • Dieldrin
    • A Source Unknown

15 Miles

2006

5B

2006
  • Indicator Bacteria
    • A Source Unknown

15 Miles

2014

5A

2027
  • Nitrate and Nitrite
    • Nonpoint Source
    • Point Source

15 Miles

1996

5B

2003
  • Nitrate as Nitrate (NO3)
    • Nonpoint Source
    • Point Source

15 Miles

1996

5B

2003
  • Nitrogen, Nitrate
    • A Source Unknown

15 Miles

2014

5B

2003
  • Permethrin
    • A Source Unknown

15 Miles

2014

5A

2037
  • Pyrethroids
    • A Source Unknown

15 Miles

2024

5A

2037
  • Sedimentation/Siltation
    • A Source Unknown

15 Miles

2002

5A

2005
  • Selenium
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Other Urban Runoff
    • See TMDL documentation

15 Miles

2014

5B

2007
  • Sulfates
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

15 Miles

2002

5B

2008
  • Total Dissolved Solids
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

15 Miles

2002

5B

2008
  • Toxaphene
    • A Source Unknown

15 Miles

2024

5B

2006
  • Toxicity
    • A Source Unknown

15 Miles

1996

5B

2006


Region 4

Calleguas Creek Reach 7 (Arroyo Simi)

River & Stream

4408.220000,4408.270000  /  18070103
  • Bifenthrin
    • A Source Unknown

14 Miles

2014

5A

2037
  • Bis(2ethylhexyl)phthalate (DEHP)
    • A Source Unknown

14 Miles

2024

5A

2037
  • Boron
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

14 Miles

2002

5B

2008
  • Chlordane
    • A Source Unknown

14 Miles

2014

5B

2006
  • Chloride
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

14 Miles

2002

5B

2008
  • Chlorodibromomethane
    • A Source Unknown
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