Regional Board 4 - Los Angeles Region CATEGORY 5 Draft 2016 Integrated Report (CWA Section 303(d) List / 305(b) Report)
2016 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***

4

Alamitos Bay

Bay & Harbor

40512000  /  18070104
  • Indicator Bacteria
    • Source Unknown

328 Acres

2006

5A

2019
  • Oxygen, Dissolved
    • Source Unknown

328 Acres

2014

5A

2027


4

Alhambra Wash

River & Stream

40531000  /  18070105
  • Ammonia
    • Other

6.9 Miles

2014

5A

2027
  • Benthic Community Effects
    • Source Unknown

6.9 Miles

2014

5A

2027


4

Alondria Park Lake

Lake & Reservoir

40512000  /  18070104
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

8 Acres

2014

5A

2027


4

Arroyo Seco Reach 1 (LA River to West Holly Ave.)

River & Stream

40515010  /  18070104
  • Benthic Community Effects
    • Source Unknown

5.2 Miles

2014

5A

2021
  • Indicator Bacteria
    • Source Unknown

5.2 Miles

2014

5B

2012
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

5.2 Miles

2002

5B

2008


4

Artesia-Norwalk Drain

River & Stream

40515010  /  18070104
  • Indicator Bacteria
    • Source Unknown

2.5 Miles

2010

5B

2016
  • Selenium
    • Source Unknown

2.5 Miles

2010

5A

2021


4

Arundell Barranca (Ventura County)

River & Stream

40311000  /  18070103
  • Indicator Bacteria
    • Source Unknown

4.9 Miles

2014

5A

2027


4

Balboa Lake

Lake & Reservoir

40521000  /  18070105
  • Ammonia
    • Source Unknown

27 Acres

2014

5B

2004
  • Oxygen, Dissolved
    • Source Unknown

27 Acres

2014

5A

2027
  • Toxicity
    • Source Unknown

27 Acres

2014

5A

2027


4

Ballona Creek

River & Stream

40513000  /  18070104
  • Copper
    • Source Unknown

6.5 Miles

1800

5B

2005
  • Cyanide
    • Source Unknown

6.5 Miles

1996

5A

2019
  • Indicator Bacteria
    • Nonpoint Source
    • Point Source

6.5 Miles

2014

5B

2007
  • Lead
    • Source Unknown

6.5 Miles

2002

5B

2005
  • Toxicity
    • Source Unknown

6.5 Miles

1996

5B

2005
  • Trash
    • Source Unknown

6.5 Miles

1996

5B

2001
  • Viruses (enteric)
    • Nonpoint Source
    • Point Source

6.5 Miles

1996

5B

2007
  • Zinc
    • Source Unknown

6.5 Miles

1996

5B

2005


4

Boulder Creek (Ventura County)

River & Stream

40331000  /  18070102
  • Bifenthrin
    • Source Unknown

6.5 Miles

2014

5A

2027
  • Toxicity
    • Source Unknown

6.5 Miles

2014

5A

2027


4

Bull Creek (Los Angeles County)

River & Stream

40521000  /  18070105
  • Ammonia
    • Source Unknown

6.5 Miles

2014

5B

2004
  • Toxicity
    • Source Unknown

6.5 Miles

2014

5A

2027


4

Burbank Western Channel

River & Stream

40521000  /  18070105
  • Copper
    • Source Unknown

13 Miles

2006

5B

2005
  • Cyanide
    • Source Unknown

13 Miles

2006

5A

2019
  • Indicator Bacteria
    • Source Unknown

13 Miles

2010

5B

2012
  • Lead
    • Source Unknown

13 Miles

2006

5B

2005
  • Selenium
    • Source Unknown

13 Miles

2010

5A

2021
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

13 Miles

1996

5B

2008


4

Calleguas Creek Reach 2 (estuary to Potrero Rd- was Calleguas Creek Reaches 1 and 2 on 1998 303d list)

River & Stream

40312000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

4.3 Miles

1996

5B

2003
  • ChemA
    • Agriculture-storm runoff

4.3 Miles

2014

5B

2006
    Historical use of pesticides and lubricants.
  • Chlordane
    • Source Unknown

4.3 Miles

1800

5B

2007
  • Copper
    • Nonpoint Source

4.3 Miles

2014

5B

2007
  • DDT (Dichlorodiphenyltrichloroethane)
    • Nonpoint Source

4.3 Miles

1996

5B

2005
  • Dieldrin
    • Source Unknown

4.3 Miles

2006

5B

2006
  • Endosulfan
    • Agriculture-storm runoff

4.3 Miles

1988

5B

2006
  • Indicator Bacteria
    • Source Unknown

4.3 Miles

2014

5A

2006
    Area affected is at the mouth of the creek.
  • Nitrogen
    • Nonpoint Source
    • Point Source

4.3 Miles

2002

5B

2003
  • PCBs (Polychlorinated biphenyls)
    • Nonpoint Source
    • Point Source

4.3 Miles

2014

5B

2005
  • Sedimentation/Siltation
    • Source Unknown

4.3 Miles

2002

5A

2005
  • Toxaphene
    • Nonpoint Source

4.3 Miles

1800

5B

2005
  • Toxicity
    • Nonpoint Source
    • Point Source

4.3 Miles

2014

5B

2005
  • Trash
    • Source Unknown

4.3 Miles

2010

5A

2021


4

Calleguas Creek Reach 3 (Potrero Road upstream to confluence with Conejo Creek on 1998 303d list)

River & Stream

40312000  /  18070103
  • Ammonia
    • Source Unknown

3.5 Miles

1996

5B

2003
  • Chlordane
    • 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
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

3.5 Miles

1996

5B

2006
  • Dieldrin
    • Source Unknown

3.5 Miles

2006

5B

2006
  • Indicator Bacteria
    • Source Unknown

3.5 Miles

2014

5A

2027
  • Nitrate and Nitrite
    • Nonpoint Source
    • Point Source

3.5 Miles

1996

5B

2003
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

3.5 Miles

1996

5B

2006
  • Sedimentation/Siltation
    • 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
    • Source Unknown

3.5 Miles

1988

5B

2019
  • Trash
    • Source Unknown

3.5 Miles

2010

5A

2021


4

Calleguas Creek Reach 4 (was Revolon Slough Main Branch: Mugu Lagoon to Central Avenue on 1998 303d list)

River & Stream

40311000  /  18070103
  • ChemA (tissue)
    • Agriculture-storm runoff

7.2 Miles

1996

5B

2006
    Historical use of pesticides and lubricants.
  • Diazinon
    • Source Unknown

7.2 Miles

2006

5B

2006
  • Dieldrin (tissue)
    • Nonpoint Source

7.2 Miles

2006

5B

2005
  • Endosulfan (tissue & sediment)
    • Agriculture-storm runoff

7.2 Miles

2006

5B

2006
  • Nitrate as Nitrate (NO3)
    • Nonpoint Source
    • Point Source

7.2 Miles

1996

5B

2003
  • Nitrogen
    • Nonpoint Source

7.2 Miles

2002

5B

2003
  • Sedimentation/Siltation
    • Source Unknown

7.2 Miles

2002

5A

2015
  • Selenium
    • Nonpoint Source

7.2 Miles

2002

5B

2007
  • Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
    • Source Unknown

7.2 Miles

2014

5B

2005
  • Toxicity
    • Source Unknown

7.2 Miles

1996

5B

2005
  • Trash
    • Agriculture-storm runoff
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

7.2 Miles

2002

5B

2008


4

Calleguas Creek Reach 5 (was Beardsley Channel on 1998 303d list)

River & Stream

40311000  /  18070103
  • ChemA (tissue)
    • Agriculture-storm runoff

4.3 Miles

1996

5B

2006
  • Diazinon
    • Source Unknown

4.3 Miles

2006

5B

2006
  • Nitrogen
    • Nonpoint Source

4.3 Miles

2002

5B

2003
  • Sedimentation/Siltation
    • Source Unknown

4.3 Miles

2002

5A

2005
  • Toxicity
    • Nonpoint Source

4.3 Miles

1996

5B

2006
  • Trash
    • Agriculture-storm runoff
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

4.3 Miles

2002

5B

2008


4

Calleguas Creek Reach 6 ( was Arroyo Las Posas Reaches 1 and 2 on 1998 303d list)

River & Stream

40362000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

15 Miles

1996

5B

2003
  • Chlordane
    • 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
    • Source Unknown

15 Miles

2006

5B

2006
  • Diazinon
    • Source Unknown

15 Miles

2006

5B

2006
  • Dieldrin
    • Source Unknown

15 Miles

2006

5B

2006
  • Indicator Bacteria
    • 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
  • Sedimentation/Siltation
    • Source Unknown

15 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

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
  • Toxicity
    • Source Unknown

15 Miles

1996

5B

2006


4

Calleguas Creek Reach 7 (was Arroyo Simi Reaches 1 and 2 on 1998 303d list)

River & Stream

40367000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

14 Miles

1996

5B

2003
  • 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
  • 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
  • Chlorpyrifos
    • Source Unknown

14 Miles

2006

5B

2006
  • Diazinon
    • Source Unknown

14 Miles

2006

5B

2006
  • Indicator Bacteria
    • Source Unknown

14 Miles

2002

5A

2019
  • Organophosphorus Pesticides
    • Agriculture
    • Municipal Point Sources

14 Miles

1996

5B

2006
  • Sedimentation/Siltation
    • Source Unknown

14 Miles

2002

5A

2006
  • Sulfates
    • 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
  • Total Dissolved Solids
    • 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
  • Toxicity
    • Source Unknown

14 Miles

1996

5B

2006
  • Trash
    • Source Unknown

14 Miles

2010

5A

2021


4

Calleguas Creek Reach 8 (was Tapo Canyon Reach 1)

River & Stream

40366000  /  18070103
  • Boron
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

7.2 Miles

2002

5B

2008
  • Chlordane
    • Source Unknown

7.2 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

7.2 Miles

2002

5B

2008
  • Chlorpyrifos
    • Source Unknown

7.2 Miles

2006

5B

2006
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

7.2 Miles

1996

5B

2006
  • Diazinon
    • Source Unknown

7.2 Miles

2002

5B

2006
  • Dieldrin
    • Source Unknown

7.2 Miles

2006

5B

2006
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

7.2 Miles

1996

5B

2006
  • Sedimentation/Siltation
    • Source Unknown

7.2 Miles

2002

5A

2015
  • Sulfates
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

7.2 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

7.2 Miles

2002

5B

2008
  • Toxaphene
    • Source Unknown

7.2 Miles

1988

5B

2006


4

Calleguas Creek Reach 9A (was lower part of Conejo Creek Reach 1 on 1998 303d list)

River & Stream

40312000  /  18070103
  • ChemA (tissue)
    • Agriculture-storm runoff

1.7 Miles

1996

5B

2006
  • Chlorpyrifos
    • Source Unknown

1.7 Miles

2006

5B

2006
  • Diazinon
    • Source Unknown

1.7 Miles

2006

5B

2006
  • Indicator Bacteria
    • Source Unknown

1.7 Miles

2014

5A

2027
  • Nitrate as Nitrate (NO3)
    • Nonpoint Source
    • Point Source

1.7 Miles

1996

5B

2003
  • Nitrogen, Nitrate
    • Nonpoint Source
    • Point Source

1.7 Miles

1996

5B

2003
  • Nitrogen, Nitrite
    • Source Unknown

1.7 Miles

2014

5B

2003
  • Sulfates
    • Source Unknown

1.7 Miles

2002

5B

2008
  • Total Dissolved Solids
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

1.7 Miles

2002

5B

2008
  • Toxicity
    • Source Unknown

1.7 Miles

1996

5B

2006
  • Trash
    • Source Unknown

1.7 Miles

2010

5A

2021


4

Calleguas Creek Reach 9B (was part of Conejo Creek Reaches 1 and 2 on 1998 303d list)

River & Stream

40363000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

6.2 Miles

1996

5B

2003
  • ChemA (tissue)
    • Agriculture-storm runoff

6.2 Miles

1996

5B

2006
  • Chlordane
    • Source Unknown

6.2 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

6.2 Miles

2002

5B

2008
  • Chlorpyrifos
    • Source Unknown

6.2 Miles

2006

5B

2006
  • Diazinon
    • Source Unknown

6.2 Miles

2006

5B

2006
  • Dieldrin
    • Source Unknown

6.2 Miles

2006

5B

2006
  • Indicator Bacteria
    • Source Unknown

6.2 Miles

2010

5A

2019
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

6.2 Miles

1996

5B

2006
  • Sulfates
    • Source Unknown

6.2 Miles

2002

5B

2008
  • Total Dissolved Solids
    • Source Unknown

6.2 Miles

2002

5B

2008
  • Toxicity
    • Nonpoint Source
    • Point Source

6.2 Miles

1996

5B

2006
  • Trash
    • Source Unknown

6.2 Miles

2010

5A

2021


4

Calleguas Creek Reach 10 (Conejo Creek (Hill Canyon)-was part of Conejo Crk Reaches 2 & 3, and lower Conejo Crk/Arroyo Conejo N Fk on 1998 303d list)

River & Stream

40364000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

3 Miles

1996

5B

2003
  • ChemA (tissue)
    • Agriculture-storm runoff

3 Miles

1996

5B

2006
  • Chlordane
    • Source Unknown

3 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 Miles

2002

5B

2008
  • Chlorpyrifos
    • Source Unknown

3 Miles

2006

5B

2006
  • Diazinon
    • Source Unknown

3 Miles

2006

5B

2006
  • Dieldrin
    • Source Unknown

3 Miles

2006

5B

2006
  • Indicator Bacteria
    • Source Unknown

3 Miles

2014

5A

2027
  • Malathion
    • Source Unknown

3 Miles

2014

5A

2029
  • Nitrogen, Nitrite
    • Nonpoint Source
    • Point Source

3 Miles

1996

5B

2003
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

3 Miles

1996

5B

2006
  • Sulfates
    • Atmospheric Deposition
    • Domestic Use of Ground Water
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry weather discharge
    • Surface Runoff

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

3 Miles

2002

5B

2008
  • Toxaphene (tissue & sediment)
    • Nonpoint Source

3 Miles

1988

5B

2006
  • Toxicity
    • Nonpoint Source
    • Point Source

3 Miles

1996

5B

2010
  • Trash
    • Source Unknown

3 Miles

2010

5A

2021


4

Calleguas Creek Reach 11 (Arroyo Santa Rosa, was part of Conejo Creek Reach 3 on 1998 303d list)

River & Stream

40365000  /  18070103
  • Ammonia
    • Nonpoint Source
    • Point Source

8.7 Miles

1996

5B

2003
  • ChemA (tissue)
    • Agriculture-storm runoff

8.7 Miles

1996

5B

2006
  • Chlordane
    • Source Unknown

8.7 Miles

1996

5B

2006
  • Dieldrin
    • Source Unknown

8.7 Miles

2006

5B

2006
  • Indicator Bacteria
    • Source Unknown

8.7 Miles

2014

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

8.7 Miles

1996

5B

2006
  • Sedimentation/Siltation
    • Agriculture
    • Natural Sources

8.7 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

8.7 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

8.7 Miles

2002

5B

2008
  • Toxicity
    • Nonpoint Source
    • Point Source

8.7 Miles

1996

5B

2005


4

Calleguas Creek Reach 12 (was Conejo Creek/Arroyo Conejo North Fork on 1998 303d list)

River & Stream

40364000  /  18070103
  • Chlordane (tissue)
    • Nonpoint Source

5.5 Miles

1996

5B

2006
  • Chlorpyrifos
    • Source Unknown

5.5 Miles

2014

5A

2029
  • Diazinon
    • Source Unknown

5.5 Miles

2014

5A

2029
  • Dieldrin
    • Source Unknown

5.5 Miles

2006

5B

2006
  • Malathion
    • Source Unknown

5.5 Miles

2014

5A

2029
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

5.5 Miles

1996

5B

2006
  • 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
  • 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
    • Source Unknown

5.5 Miles

1988

5B

2006


4

Canada Larga (Ventura River Watershed)

River & Stream

40210010  /  18070103
  • Indicator Bacteria
    • Source Unknown

8 Miles

2014

5A

2027
    Horse stables, land use, cattle, and wildlife may be sources.
  • Oxygen, Dissolved
    • Source Unknown

8 Miles

2014

5B

2013
  • Total Dissolved Solids
    • Source Unknown

8 Miles

2010

5A

2021


4

Casitas, Lake

Lake & Reservoir

40220032  /  18070101
  • Mercury
    • Natural Sources
    • Source Unknown

2069 Acres

2010

5A

2021


4

Castaic Lagoon

Lake & Reservoir

40351000  /  18070102
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

183 Acres

2014

5A

2027


4

Castaic Lake

Lake & Reservoir

40351000  /  18070102
  • Mercury
    • Source Unknown

2282 Acres

2010

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

2282 Acres

2014

5A

2027


4

Colorado Lagoon

Wetland, Tidal

40512000  /  18070104
  • Chlordane
    • Source Unknown

13 Acres

2014

5B

2011
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

13 Acres

2014

5B

2011
  • Dieldrin
    • Source Unknown

13 Acres

2014

5B

2011
  • Indicator Bacteria
    • Source Unknown

13 Acres

2006

5A

2019
  • Lead
    • Source Unknown

13 Acres

2014

5B

2011
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • Source Unknown

13 Acres

2014

5B

2011
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

13 Acres

2014

5B

2011
  • Toxicity
    • Source Unknown

13 Acres

2014

5B

2011
  • Zinc
    • Source Unknown

13 Acres

2014

5B

2011


4

Compton Creek

River & Stream

40515010  /  18070104
  • Benthic Community Effects
    • Source Unknown

8.5 Miles

2014

5A

2021
  • Copper
    • Source Unknown

8.5 Miles

1996

5B

2008
  • Indicator Bacteria
    • Source Unknown

8.5 Miles

2014

5A

2009
  • Iron
    • Source Unknown

8.5 Miles

2014

5A

2027
  • Lead
    • Source Unknown

8.5 Miles

1996

5B

2005
  • Trash
    • Nonpoint Source

8.5 Miles

2006

5B

2008
  • Zinc
    • Source Unknown

8.5 Miles

2014

5B

2008
  • pH
    • Nonpoint Source
    • Point Source

8.5 Miles

1996

5B

2004


4

Coyote Creek

River & Stream

40515010  /  18070104
  • Indicator Bacteria
    • Source Unknown

13 Miles

1996

5B

2016
  • Iron
    • Source Unknown

13 Miles

2014

5A

2027
  • Malathion
    • Source Unknown

13 Miles

2014

5A

2027
  • Toxicity
    • Source Unknown

13 Miles

2002

5A

2008
  • pH
    • Source Unknown

13 Miles

2006

5A

2019


4

Coyote Creek, North Fork

River & Stream

40515010  /  18070104
  • Indicator Bacteria
    • Source Unknown

5 Miles

2010

5B

2016
  • Selenium
    • Source Unknown

5 Miles

2010

5A

2021


4

Crystal Lake

Lake & Reservoir

40543000  /  18070106
  • Organic Enrichment/Low Dissolved Oxygen
    • Source Unknown

3.7 Acres

1998

5A

2019


4

Dominguez Channel (lined portion above Vermont Ave)

River & Stream

40351000  /  18070104
  • Copper
    • Source Unknown

6.7 Miles

1996

5B

2012
  • Indicator Bacteria
    • Source Unknown

6.7 Miles

2006

5A

2027
  • Lead
    • Source Unknown

6.7 Miles

1800

5B

2012
  • Toxicity
    • Source Unknown

6.7 Miles

2010

5B

2012
  • Zinc
    • Source Unknown

6.7 Miles

1800

5B

2012


4

Dominguez Channel Estuary (unlined portion below Vermont Ave)

Estuary

40512000  /  18070104
  • Benthic Community Effects
    • Source Unknown

140 Acres

1996

5A

2019
  • Benzo(a)anthracene
    • Agriculture-storm runoff

140 Acres

2006

5B

2012
  • Benzo(a)pyrene (3,4-Benzopyrene -7-d)
    • Source Unknown

140 Acres

1996

5B

2012
  • Chrysene (C1-C4)
    • Source Unknown

140 Acres

2006

5B

2012
  • Copper
    • Other

140 Acres

2014

5B

2012
  • Indicator Bacteria
    • Source Unknown

140 Acres

2014

5A

2007
  • Lead
    • Source Unknown

140 Acres

1800

5B

2012
  • PCBs (Polychlorinated biphenyls)
    • Agriculture
    • Agriculture-animal
    • Agriculture-grazing

140 Acres

1996

5B

2012
  • Phenanthrene
    • Source Unknown

140 Acres

2006

5B

2012
  • Pyrene
    • Source Unknown

140 Acres

2006

5B

2012
  • Toxicity
    • Source Unknown

140 Acres

2014

5B

2012


4

Downtown Shoreline Marina (part of San Pedro Bay Near/Off Shore Zones)

Bay & Harbor

40512000  /  18070104
  • Copper
    • Source Unknown

83 Acres

2014

5A

2027
  • Oxygen, Dissolved
    • Source Unknown

83 Acres

2014

5A

2027


4

Dry Canyon Creek

River & Stream

40521000  /  18070104
  • Indicator Bacteria
    • Source Unknown

3.9 Miles

2014

5A

2027


4

Duck Pond Agricultural Drains/Mugu Drain/Oxnard Drain No 2

River & Stream

40311000  /  18070103
  • Bifenthrin
    • Source Unknown

12 Miles

2014

5A

2027
  • ChemA
    • Nonpoint Source

12 Miles

2014

5B

2006
  • Chlordane
    • Source Unknown

12 Miles

1800

5B

2006
  • Chlorpyrifos
    • Source Unknown

12 Miles

2014

5B

2006
  • DDD (Dichlorodiphenyldichloroethane)
    • Source Unknown

12 Miles

2014

5B

2006
  • DDE (Dichlorodiphenyldichloroethylene)
    • Source Unknown

12 Miles

2014

5B

2006
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

12 Miles

1800

5B

2006
  • Nitrogen
    • Nonpoint Source

12 Miles

1996

5B

2003
  • Toxaphene
    • Source Unknown

12 Miles

1800

5B

2006
  • Toxicity
    • Nonpoint Source

12 Miles

1996

5B

2005


4

Elderberry Forebay

Lake & Reservoir

40351000  /  18070102
  • Dieldrin
    • Source Unknown

464 Acres

2014

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

464 Acres

2014

5A

2027


4

Elizabeth Lake

Lake & Reservoir

40351000  /  18070102
  • Eutrophic
    • Source Unknown

123 Acres

1996

5A

2019
  • Organic Enrichment/Low Dissolved Oxygen
    • Source Unknown

123 Acres

1998

5A

2019
  • Trash
    • Agriculture-storm runoff
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

123 Acres

1996

5B

2008
  • pH
    • Source Unknown

123 Acres

1996

5A

2019


4

Ellsworth Barranca

River & Stream

40321000  /  18070103
  • Chlorpyrifos
    • Source Unknown

10 Miles

2014

5A

2027
  • DDE (Dichlorodiphenyldichloroethylene)
    • Source Unknown

10 Miles

2014

5A

2030


4

Honda Barranca

River & Stream

40361000  /  18070103
  • Bifenthrin
    • Source Unknown

5.7 Miles

2014

5A

2027
  • Chlordane
    • Source Unknown

5.7 Miles

2014

5B

2006
  • Chlorpyrifos
    • Source Unknown

5.7 Miles

2014

5B

2006
  • DDD (Dichlorodiphenyldichloroethane)
    • Source Unknown

5.7 Miles

2014

5B

2006
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

5.7 Miles

2014

5B

2006


4

Hopper Creek

River & Stream

40341000  /  18070102
  • Sulfates
    • Source Unknown

13 Miles

2002

5A

2015
  • Total Dissolved Solids
    • Source Unknown

13 Miles

2220

5A

2019


4

Hueneme Drain

River & Stream

40311000  /  18070103
  • Escherichia coli (E. coli)
    • Source Unknown

1.7 Miles

2014

5A

2027
  • Trash
    • Source Unknown

1.7 Miles

2014

5C



4

Javon Canyon

River & Stream

40100011  /  18070101
  • Benthic Community Effects
    • Source Unknown

0.9 Miles

2014

5A

2027
  • Selenium
    • Source Unknown

0.9 Miles

2014

5A

2027


4

Lake Hughes

Lake & Reservoir

40351000  /  18070102
  • Algae
    • Source Unknown

21 Acres

1996

5A

2019
  • Eutrophication
    • Source Unknown

21 Acres

2014

5A

2019
  • Odor
    • Source Unknown

21 Acres

1996

5A

2019
  • Trash
    • Agriculture-storm runoff
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

21 Acres

1996

5B

2008


4

Lake Lindero

Lake & Reservoir

40423000  /  18070104
  • Algae
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

15 Acres

1996

5B

2003
  • Chloride
    • Source Unknown

15 Acres

1996

5A

2019
  • Eutrophic
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

15 Acres

1996

5B

2003
  • Odor
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

15 Acres

1996

5B

2003
  • Selenium
    • Source Unknown

15 Acres

1996

5A

2019
  • Specific Conductivity
    • Source Unknown

15 Acres

1996

5A

2019
  • Trash
    • Source Unknown

15 Acres

1996

5B

2008


4

Las Virgenes Creek

River & Stream

40422010  /  18070104
  • Benthic Community Effects
    • Source Unknown

12 Miles

2014

5A

2021
  • Indicator Bacteria
    • Nonpoint Source

12 Miles

2014

5B

2005
  • Invasive Species
    • Source Unknown

12 Miles

2010

5A

2021
  • Nutrients (Algae)
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

12 Miles

1998

5B

2003
  • Organic Enrichment/Low Dissolved Oxygen
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

12 Miles

1996

5B

2003
  • Scum/Foam-unnatural
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

12 Miles

1996

5B

2003
  • Sedimentation/Siltation
    • Source Unknown

12 Miles

2002

5B

2013
  • Selenium
    • Source Unknown

12 Miles

1996

5A

2019
  • Trash
    • Source Unknown

12 Miles

1996

5B

2008


4

Legg Lake

Lake & Reservoir

40531000  /  18070105
  • Ammonia
    • Source Unknown

25 Acres

1996

5B

2012
  • Copper
    • Source Unknown

25 Acres

1996

5B

2012
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

25 Acres

2014

5A

2027
  • Lead
    • Source Unknown

25 Acres

1996

5B

2012
  • Odor
    • Source Unknown

25 Acres

1996

5B

2012
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

25 Acres

2014

5A

2027
  • Trash
    • Agriculture-storm runoff
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

25 Acres

1996

5B

2008
  • pH
    • Source Unknown

25 Acres

1996

5A

2019


4

Lincoln Park Lake

Lake & Reservoir

40515010  /  18070104
  • Ammonia
    • Source Unknown

3.8 Acres

1996

5B

2012
  • Eutrophic
    • Source Unknown

3.8 Acres

1996

5B

2012
  • Odor
    • Source Unknown

3.8 Acres

1996

5B

2012
  • Organic Enrichment/Low Dissolved Oxygen
    • Source Unknown

3.8 Acres

1998

5B

2012
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

3.8 Acres

2014

5A

2027
  • Trash
    • Source Unknown

3.8 Acres

1996

5B

2012


4

Lindero Creek Reach 1

River & Stream

40423000  /  18070104
  • Algae
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

3 Miles

1996

5B

2003
  • Benthic Community Effects
    • Source Unknown

3 Miles

2014

5A

2021
  • Indicator Bacteria
    • Nonpoint Source

3 Miles

2014

5B

2006
  • Invasive Species
    • Source Unknown

3 Miles

2010

5A

2021
  • Scum/Foam-unnatural
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

3 Miles

1996

5B

2003
  • Selenium
    • Source Unknown

3 Miles

1996

5A

2019
  • Trash
    • Source Unknown

3 Miles

1996

5B

2008


4

Lindero Creek Reach 2 (Above Lake)

River & Stream

40425000  /  18070104
  • Algae
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

4.5 Miles

1998

5B

2003
  • Indicator Bacteria
    • Source Unknown

4.5 Miles

2014

5B

2006
  • Scum/Foam-unnatural
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

4.5 Miles

1998

5B

2003
  • Selenium
    • Source Unknown

4.5 Miles

1998

5A

2019
  • Trash
    • Source Unknown

4.5 Miles

1998

5B

2008


4

Los Angeles Harbor - Consolidated Slip

Bay & Harbor

40512000  /  18070104
  • 2-Methylnaphthalene
    • Source Unknown

36 Acres

1998

5B

2012
  • Benthic Community Effects
    • Source Unknown

36 Acres

1998

5A

2019
  • Benzo(a)anthracene
    • Source Unknown

36 Acres

1998

5B

2012
    This listing was made by USEPA for 2006.
  • Benzo(a)pyrene (3,4-Benzopyrene -7-d)
    • Source Unknown

36 Acres

1998

5B

2012
  • Chromium
    • Source Unknown

36 Acres

2014

5B

2012
  • Chrysene (C1-C4)
    • Source Unknown

36 Acres

1998

5B

2012
  • Dieldrin
    • Source Unknown

36 Acres

1998

5B

2012
  • Phenanthrene
    • Source Unknown

36 Acres

1998

5B

2012
  • Pyrene
    • Source Unknown

36 Acres

1998

5B

2012
  • Toxicity
    • Source Unknown

36 Acres

2014

5B

2012


4

Los Angeles River Estuary (Queensway Bay)

Estuary

40512000  /  18070104
  • Chlordane
    • Source Unknown

207 Acres

1800

5B

2012
  • Toxicity
    • Source Unknown

207 Acres

2014

5A

2019
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

207 Acres

2006

5B

2008


4

Los Angeles River Reach 1 (Estuary to Carson Street)

River & Stream

40512000  /  18070104
  • Ammonia
    • Nonpoint Source
    • Point Source

3.4 Miles

2002

5B

2004
  • Cadmium
    • Source Unknown

3.4 Miles

2002

5B

2005
  • Cyanide
    • Source Unknown

3.4 Miles

2006

5A

2019
  • Indicator Bacteria
    • Source Unknown

3.4 Miles

2014

5B

2003
  • Lead
    • Nonpoint Source
    • Point Source

3.4 Miles

1996

5B

2005
  • Nutrients (Algae)
    • Nonpoint Source
    • Point Source

3.4 Miles

1998

5B

2004
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

3.4 Miles

2006

5B

2008
  • pH
    • Nonpoint Source
    • Point Source

3.4 Miles

1996

5B

2003


4

Los Angeles River Reach 2 (Carson to Figueroa Street)

River & Stream

40515010  /  18070104
  • Ammonia
    • Nonpoint Source
    • Point Source

19 Miles

1996

5B

2004
  • Copper
    • Source Unknown

19 Miles

2006

5B

2005
  • Indicator Bacteria
    • Source Unknown

19 Miles

2014

5B

2012
  • Lead
    • Nonpoint Source
    • Point Source

19 Miles

1996

5B

2005
  • Nutrients (Algae)
    • Nonpoint Source
    • Point Source

19 Miles

1996

5B

2004
  • Oil
    • Natural Sources

19 Miles

1996

5A

2019
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

19 Miles

1996

5B

2008


4

Los Angeles River Reach 3 (Figueroa St. to Riverside Dr.)

River & Stream

40521000  /  18070104
  • Ammonia
    • Nonpoint Source
    • Point Source

7.9 Miles

1996

5B

2004
  • Copper
    • Source Unknown

7.9 Miles

2006

5B

2008
  • Indicator Bacteria
    • Source Unknown

7.9 Miles

2014

5B

2012
  • Nutrients (Algae)
    • Nonpoint Source
    • Point Source

7.9 Miles

1996

5B

2004
  • Toxicity
    • Source Unknown

7.9 Miles

2014

5A

2027
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

7.9 Miles

1996

5B

2008


4

Los Angeles River Reach 4 (Sepulveda Dr. to Sepulveda Dam)

River & Stream

40521000  /  18070105
  • Benthic Community Effects
    • Source Unknown

11 Miles

2014

5A

2027
  • Indicator Bacteria
    • Source Unknown

11 Miles

2014

5A

2019
  • Nutrients (Algae)
    • Nonpoint Source
    • Point Source

11 Miles

1996

5B

2004
  • Toxicity
    • Source Unknown

11 Miles

2014

5A

2027
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

11 Miles

1996

5B

2008


4

Los Angeles River Reach 5 ( within Sepulveda Basin)

River & Stream

40521000  /  18070105
  • Ammonia
    • Source Unknown

1.9 Miles

1996

5B

2004
  • Copper
    • Source Unknown

1.9 Miles

2006

5B

2005
  • Lead
    • Source Unknown

1.9 Miles

2006

5B

2005
  • Nutrients (Algae)
    • Nonpoint Source
    • Point Source

1.9 Miles

1996

5B

2004
  • Oil
    • Source Unknown

1.9 Miles

1996

5A

2019
  • Toxicity
    • Source Unknown

1.9 Miles

2014

5A

2027
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

1.9 Miles

1996

5B

2008


4

Los Angeles River Reach 6 (Above Sepulveda Flood Control Basin)

River & Stream

40521000  /  18070105
  • Copper
    • Source Unknown

7 Miles

2014

5B

2008
  • Indicator Bacteria
    • Source Unknown

7 Miles

2014

5B

2012
  • Selenium
    • Source Unknown

7 Miles

1992

5B

2005
  • Toxicity
    • Source Unknown

7 Miles

2014

5A

2027


4

Los Cerritos Channel

Wetland, Tidal

40515010  /  18070104
  • Ammonia
    • Source Unknown

30 Acres

2002

5A

2015
  • Bis(2ethylhexyl)phthalate (DEHP)
    • Source Unknown

30 Acres

2006

5A

2019
  • Copper
    • Source Unknown

30 Acres

2002

5A

2019
  • Indicator Bacteria
    • Source Unknown

30 Acres

2014

5A

2019
  • Lead
    • Source Unknown

30 Acres

2002

5A

2019
  • Trash
    • Source Unknown

30 Acres

2006

5A

2019
  • Zinc
    • Source Unknown

30 Acres

2002

5A

2019
  • pH
    • Source Unknown

30 Acres

2014

5A

2021


4

Los Sauces Creek

River & Stream

40100010  /  18070101
  • Selenium
    • Source Unknown

2.8 Miles

2014

5A

2027


4

Machado Lake (Harbor Park Lake)

Lake & Reservoir

40512000  /  18070104
  • Algae
    • Atmospheric Deposition
    • Highway/Road/Bridge Runoff
    • Internal Nutrient Cycling (primarily lakes)
    • Urban Runoff--Industrial Permitted
    • Urban Runoff/Storm Sewers

45 Acres

1996

5B

2009
  • Ammonia
    • Atmospheric Deposition
    • Highway/Road/Bridge Runoff
    • Internal Nutrient Cycling (primarily lakes)
    • Urban Runoff--Industrial Permitted
    • Urban Runoff/Storm Sewers

45 Acres

1996

5B

2009
  • ChemA
    • Source Unknown

45 Acres

2014

5B

2012
  • Eutrophic
    • Atmospheric Deposition
    • Highway/Road/Bridge Runoff
    • Internal Nutrient Cycling (primarily lakes)
    • Urban Runoff--Industrial Permitted
    • Urban Runoff/Storm Sewers

45 Acres

1992

5B

2009
  • Odor
    • Atmospheric Deposition
    • Highway/Road/Bridge Runoff
    • Internal Nutrient Cycling (primarily lakes)
    • Urban Runoff--Industrial Permitted
    • Urban Runoff/Storm Sewers

45 Acres

1996

5B

2009
  • Trash
    • Agriculture-storm runoff
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

45 Acres

1996

5B

2008


4

Madranio Canyon

River & Stream

40100010  /  18070101
  • Benthic Community Effects
    • Source Unknown

3.8 Miles

2014

5A

2027
  • Copper
    • Source Unknown

3.8 Miles

2014

5A

2027
  • Selenium
    • Source Unknown

3.8 Miles

2014

5A

2027


4

Malibou Lake

Lake & Reservoir

40424000  /  18070104
  • Algae
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

40 Acres

1996

5B

2003
  • Dieldrin
    • Source Unknown

40 Acres

2014

5A

2027
  • Eutrophic
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

40 Acres

1996

5B

2003
  • Organic Enrichment/Low Dissolved Oxygen
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

40 Acres

1998

5B

2003


4

Malibu Creek

River & Stream

40421000  /  18070104
  • Benthic Community Effects
    • Source Unknown

11 Miles

2014

5A

2021
  • Fish Barriers (Fish Passage)
    • Source Unknown

11 Miles

1996

5A

2019
  • Indicator Bacteria
    • Nonpoint Source
    • Point Source

11 Miles

2014

5B

2002
  • Invasive Species
    • Source Unknown

11 Miles

2010

5A

2021
  • Nutrients (Algae)
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Nonpoint Source
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

11 Miles

1996

5B

2003
  • Scum/Foam-unnatural
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

11 Miles

1996

5B

2003
  • Sedimentation/Siltation
    • Source Unknown

11 Miles

2002

5B

2013
  • Selenium
    • Source Unknown

11 Miles

2006

5A

2019
  • Sulfates
    • Source Unknown

11 Miles

2006

5A

2019
  • Toxicity
    • Source Unknown

11 Miles

2010

5A

2027
  • Trash
    • Nonpoint Source

11 Miles

1996

5B

2009


4

Malibu Lagoon

Estuary

40421000  /  18070104
  • Benthic Community Effects
    • Source Unknown

15 Acres

1998

5A

2011
  • Eutrophic
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

15 Acres

1998

5B

2003
  • Indicator Bacteria
    • Nonpoint Source
    • Point Source

15 Acres

2014

5B

2006
  • Swimming Restrictions
    • Agriculture-animal
    • Illicit Connections/Illegal Hook-ups/Dry Weather Flows
    • Natural Sources
    • Onsite Wastewater Systems (Septic Tanks)
    • Spills
    • Surface Runoff
    • Urban Runoff/Storm Sewers

15 Acres

1998

5B

2006
  • Viruses (enteric)
    • Agriculture-animal
    • Illicit Connections/Illegal Hook-ups/Dry Weather Flows
    • Natural Sources
    • Onsite Wastewater Systems (Septic Tanks)
    • Spills
    • Surface Runoff
    • Urban Runoff/Storm Sewers

15 Acres

1998

5B

2006
  • pH
    • Source Unknown

15 Acres

2002

5A

2006
    Possible sources might be septic systems, storm drains, and birds.


4

Marina del Rey Harbor - Back Basins

Bay & Harbor

40517000  /  18070104
  • Chlordane
    • Nonpoint Source

391 Acres

2014

5B

2005
  • Copper
    • Source Unknown

391 Acres

1800

5B

2006
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

391 Acres

1800

5A

2005
    A USEPA-approved TMDL has made a finding of non-impairment for this pollutant.
  • Dieldrin
    • Source Unknown

391 Acres

1800

5A

2005
    A USEPA-approved TMDL has made a finding of non-impairment for this pollutant.
  • Indicator Bacteria
    • Nonpoint Source

391 Acres

2006

5B

2004
  • Lead
    • Nonpoint Source

391 Acres

2014

5B

2006
  • Oxygen, Dissolved
    • Source Unknown

391 Acres

2014

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • Nonpoint Source

391 Acres

2014

5B

2006
    Historical use of pesticides, storm water runoff/aerial deposition from urban areas. Shellfish harvesting advisory for PCBs in tissue.
  • Toxicity
    • Nonpoint Source

391 Acres

2014

5B

2005
  • Zinc
    • Nonpoint Source

391 Acres

2014

5B

2006


4

McCoy Canyon Creek

River & Stream

40521000  /  18070104
  • Indicator Bacteria
    • Source Unknown

4 Miles

2014

5A

2027
  • Nitrate
    • Source Unknown

4 Miles

2002

5B

2003
  • Nitrogen, Nitrate
    • Source Unknown

4 Miles

2002

5B

2003


4

McGrath Lake

Lake & Reservoir

40311000  /  18070103
  • Chlordane
    • Source Unknown

20 Acres

2014

5B

2011
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

20 Acres

2014

5B

2011
  • Indicator Bacteria
    • Source Unknown

20 Acres

2014

5A

2027
  • Toxicity
    • Source Unknown

20 Acres

2014

5B

2011


4

Medea Creek Reach 1 (Lake to Confl. with Lindero)

River & Stream

40424000  /  18070104
  • Algae
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

2.6 Miles

1996

5B

2003
  • Benthic Community Effects
    • Source Unknown

2.6 Miles

2014

5A

2027
  • Indicator Bacteria
    • Nonpoint Source

2.6 Miles

2014

5B

2006
  • Sedimentation/Siltation
    • Source Unknown

2.6 Miles

2002

5B

2013
  • Selenium
    • Source Unknown

2.6 Miles

1996

5A

2027
  • Trash
    • Source Unknown

2.6 Miles

1996

5B

2008


4

Medea Creek Reach 2 (Abv Confl. with Lindero)

River & Stream

40423000  /  18070104
  • Algae
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

5.4 Miles

1996

5B

2003
  • Benthic Community Effects
    • Source Unknown

5.4 Miles

2014

5A

2021
  • Indicator Bacteria
    • Nonpoint Source

5.4 Miles

2014

5B

2006
  • Invasive Species
    • Source Unknown

5.4 Miles

2010

5A

2021
  • Sedimentation/Siltation
    • Source Unknown

5.4 Miles

2002

5B

2013
  • Selenium
    • Source Unknown

5.4 Miles

1996

5A

2019
  • Trash
    • Source Unknown

5.4 Miles

1996

5B

2008


4

Munz Lake

Lake & Reservoir

40351000  /  18070102
  • Eutrophic
    • Source Unknown

6.6 Acres

1996

5A

2019
  • Trash
    • Agriculture-storm runoff
    • Nonpoint Source
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

6.6 Acres

1996

5B

2008


4

Ormond Beach

Coastal & Bay Shoreline

40311000  /  18070103
  • Indicator Bacteria
    • Source Unknown

3.1 Miles

2002

5A

2027


4

Ormond Beach Wetlands

Wetland, Tidal

40311000  /  18070103
  • Trash
    • Source Unknown

99 Acres

2014

5C

  • pH
    • Source Unknown

99 Acres

2014

5A

2027


4

Oxnard Drain

River & Stream

40311000  /  18070103
  • Escherichia coli (E. coli)
    • Source Unknown

3 Miles

2014

5A

2027
  • Trash
    • Source Unknown

3 Miles

2014

5C

  • pH
    • Source Unknown

3 Miles

2014

5A

2027


4

Padre Juan Canyon

River & Stream

40100011  /  18070101
  • Benthic Community Effects
    • Source Unknown

1.9 Miles

2014

5A

2027
  • Selenium
    • Source Unknown

1.9 Miles

2014

5A

2027


4

Peninsula Beach

Coastal & Bay Shoreline

40311000  /  18070103
  • Indicator Bacteria
    • Source Unknown

0.15 Miles

2002

5A

2019
    Area affected is beach area north of South Jetty.


4

Piru Creek (from gaging station below Santa Felicia Dam to headwaters)

River & Stream

40342000  /  18070102
  • Chloride
    • Source Unknown

67 Miles

2006

5A

2019
  • Toxicity
    • Source Unknown

67 Miles

2014

5A

2027
  • pH
    • Source Unknown

67 Miles

2002

5A

2019


4

Point Mugu Beach

Coastal & Bay Shoreline

40311000  /  18070104
  • Indicator Bacteria
    • Other

0.36 Miles

2010

5A

2027


4

Pole Creek (trib to Santa Clara River Reach 3 )

River & Stream

40331000  /  18070102
  • Sulfates
    • Source Unknown

9 Miles

2002

5A

2019
  • Total Dissolved Solids
    • Source Unknown

9 Miles

2002

5A

2019


4

Port Hueneme Beach Park

Coastal & Bay Shoreline

40311000  /  18070103
  • Indicator Bacteria
    • Other

1.2 Miles

2010

5A

2027


4

Port Hueneme Harbor (Back Basins)

Bay & Harbor

40311000  /  18070103
  • Arsenic
    • Source Unknown

65 Acres

2014

5A

2027
  • Cadmium
    • Source Unknown

65 Acres

2014

5A

2027
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

65 Acres

2014

5C

  • Dieldrin
    • Source Unknown

65 Acres

2014

5A

2027
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • Source Unknown

65 Acres

2014

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

65 Acres

2014

5C



4

Port Hueneme Pier

Coastal & Bay Shoreline

40311000  /  18070103
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

0.33 Miles

2006

5A

2019


4

Potrero Canyon Creek

River & Stream

40425000  /  18070104
  • Oxygen, Dissolved
    • Source Unknown

0.95 Miles

2014

5A

2027


4

Puddingstone Reservoir

Lake & Reservoir

40552000  /  18070106
  • Chlordane
    • Source Unknown

243 Acres

2014

5A

2019
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

243 Acres

2014

5A

2019
  • Mercury
    • Source Unknown

243 Acres

2014

5A

2019
  • Organic Enrichment/Low Dissolved Oxygen
    • Source Unknown

243 Acres

1996

5A

2019
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

243 Acres

2014

5A

2019


4

Puente Creek

River & Stream

40515010  /  18070104
  • Indicator Bacteria
    • Source Unknown

5.8 Miles

2010

5A

2027
  • Selenium
    • Source Unknown

5.8 Miles

2010

5A

2021


4

Pyramid Lake

Lake & Reservoir

40342000  /  18070102
  • Chlordane
    • Source Unknown

1483 Acres

2014

5A

2027
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

1483 Acres

2014

5A

2027
  • Dieldrin
    • Source Unknown

1483 Acres

2014

5A

2027
  • Mercury
    • Source Unknown

1483 Acres

2010

5A

2021
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

1483 Acres

2014

5A

2027


4

Rincon Beach

Coastal & Bay Shoreline

40100010  /  18070101
  • Indicator Bacteria
    • Source Unknown

0.38 Miles

2002

5A

2015
    Area affected is 50 yards south of mouth of Rincon Creek.


4

Rincon Parkway Beach

Coastal & Bay Shoreline

40100011  /  18070101
  • Indicator Bacteria
    • Source Unknown

0.03 Miles

2014

5A

2027


4

Rio De Santa Clara/Oxnard Drain No. 3

River & Stream

40311000  /  18070103
  • ChemA (tissue)
    • Source Unknown

1.9 Miles

1996

5B

2011
  • DDD (Dichlorodiphenyldichloroethane)
    • Source Unknown

1.9 Miles

2014

5B

2011
  • DDE (Dichlorodiphenyldichloroethylene)
    • Source Unknown

1.9 Miles

2014

5B

2011
  • Nitrogen
    • Major Municipal Point Source-dry and/or wet weather discharge

1.9 Miles

1996

5B

2003
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

1.9 Miles

2014

5B

2011
  • Toxicity
    • Source Unknown

1.9 Miles

2014

5A

2019


4

Rio Hondo Reach 1 (Confl. LA River to Snt Ana Fwy)

River & Stream

40515010  /  18070104
  • Copper
    • Nonpoint Source
    • Point Source

4.6 Miles

1996

5B

2005
  • Indicator Bacteria
    • Source Unknown

4.6 Miles

2014

5B

2012
  • Lead
    • Nonpoint Source
    • Point Source

4.6 Miles

1996

5B

2005
  • Toxicity
    • Source Unknown

4.6 Miles

2010

5A

2021
  • Trash
    • Nonpoint Source
    • Surface Runoff
    • Urban Runoff/Storm Sewers

4.6 Miles

1996

5B

2008
  • Zinc
    • Nonpoint Source
    • Point Source

4.6 Miles

1996

5B

2005
  • pH
    • Nonpoint Source
    • Point Source

4.6 Miles

1996

5B

2004


4

Rio Hondo Reach 2 (At Spreading Grounds)

River & Stream

40515010  /  18070104
  • Cyanide
    • Source Unknown

4.9 Miles

2010

5A

2021


4

Rio Hondo Reach 3 (above Spreading Grounds)

River & Stream

4412.310000  /  18070104
  • Indicator Bacteria
    • Source Unknown

8.1 Miles

2014

5B

2012
  • Iron
    • Source Unknown

8.1 Miles

2014

5A

2027
  • Oxygen, Dissolved
    • Source Unknown

8.1 Miles

2014

5A

2027


4

San Antonio Creek (Tributary to Ventura River Reach 4)

River & Stream

40220023  /  18070101
  • Indicator Bacteria
    • Source Unknown

9.8 Miles

2010

5A

2021
  • Nitrogen
    • Source Unknown

9.8 Miles

2002

5B

2013
  • Total Dissolved Solids
    • Source Unknown

9.8 Miles

2010

5A

2023


4

San Buenaventura Beach

Coastal & Bay Shoreline

40210000  /  18070103
  • Indicator Bacteria
    • Source Unknown

1.8 Miles

1800

5A

2015
    This listing includes the area of San Buenaventura Beach at San Jon Rd.


4

San Gabriel River Estuary

River & Stream

40516000  /  18070104
  • Copper
    • Source Unknown

3.4 Miles

1996

5B

2007
  • Dioxin
    • Source Unknown

3.4 Miles

2010

5A

2021
  • Indicator Bacteria
    • Source Unknown

3.4 Miles

2014

5B

2016
  • Nickel
    • Source Unknown

3.4 Miles

2010

5A

2021
  • Oxygen, Dissolved
    • Source Unknown

3.4 Miles

2010

5A

2021


4

San Gabriel River Reach 1 (Estuary to Firestone)

River & Stream

40515010  /  18070104
  • Temperature, water
    • Source Unknown

6.4 Miles

2014

5A

2027
  • pH
    • Source Unknown

6.4 Miles

1996

5A

2009


4

San Gabriel River Reach 2 (Firestone to Whittier Narrows Dam

River & Stream

40515010  /  18070104
  • Cyanide
    • Source Unknown

12 Miles

2010

5A

2021
  • Lead
    • Nonpoint Source
    • Point Source

12 Miles

1996

5B

2007
  • Temperature, water
    • Source Unknown

12 Miles

2014

5A

2027


4

San Gabriel River, East Fork

River & Stream

40543000  /  18070106
  • Benthic Community Effects
    • Source Unknown

5.9 Miles

2014

5A

2029
  • Trash
    • Nonpoint Source

5.9 Miles

1996

5B

2000


4

San Jose Creek Reach 1 (SG Confluence to Temple St.)

River & Stream

4405.200000,4405.510000  /  18070105
  • Ammonia
    • Nonpoint Source
    • Point Source

29 Miles

1996

5C

  • Indicator Bacteria
    • Source Unknown

29 Miles

2014

5B

2016
  • Temperature, water
    • Source Unknown

29 Miles

2014

5A

2027
  • Total Dissolved Solids
    • Source Unknown

29 Miles

2010

5A

2021
  • Toxicity
    • Source Unknown

29 Miles

1996

5A

2019
  • pH
    • Source Unknown

29 Miles

2010

5A

2021


4

Sanjon Barranca Creek

River & Stream

40210000  /  18070101
  • Escherichia coli (E. coli)
    • Source Unknown

0.22 Miles

2014

5A

2027
  • Trash
    • Source Unknown

0.22 Miles

2014

5C



4

Santa Clara River Estuary

Estuary

40311000  /  18070103
  • Ammonia
    • Source Unknown

49 Acres

2014

5A

2027
  • ChemA
    • Source Unknown

49 Acres

1998

5B

2011
  • Indicator Bacteria
    • Source Unknown

49 Acres

2014

5B

2012
  • Nitrogen, Nitrate
    • Source Unknown

49 Acres

2010

5B

2004
  • Toxaphene
    • Source Unknown

49 Acres

1998

5B

2011
  • Toxicity
    • Source Unknown

49 Acres

2010

5A

2019
  • pH
    • Source Unknown

49 Acres

2014

5A

2027


4

Santa Clara River Reach 1 (Estuary to Hwy 101 Bridge)

River & Stream

40311000  /  18070103
  • Oxygen, Dissolved
    • Source Unknown

10 Miles

2014

5A

2027
  • Toxicity
    • Source Unknown

10 Miles

2006

5A

2019
  • Trash
    • Source Unknown

10 Miles

2014

5C

  • pH
    • Source Unknown

10 Miles

2014

5A

2027


4

Santa Clara River Reach 3 (Freeman Diversion to A Street)

River & Stream

40331000  /  18070103
  • Chloride
    • Nonpoint Source
    • Point Source

31 Miles

2002

5B

2010
  • Escherichia coli (E. coli)
    • Source Unknown

31 Miles

2014

5A

2027
  • Indicator Bacteria
    • Source Unknown

31 Miles

2014

5B

2012
  • Mercury
    • Source Unknown

31 Miles

2014

5A

2027
  • Selenium
    • Source Unknown

31 Miles

2014

5A

2027
  • Total Dissolved Solids
    • Source Unknown

31 Miles

2002

5A

2015
  • Toxicity
    • Source Unknown

31 Miles

2010

5A

2021
  • Trash
    • Source Unknown

31 Miles

2014

5C



4

Santa Clara River Reach 5 (Blue Cut gaging station to West Pier Hwy 99 Bridge) (was named Santa Clara River Reach 7 on 2002 303(d) list)

River & Stream

4403.410000,4403.510000  /  18070102
  • Benthic Community Effects
    • Source Unknown

8.7 Miles

2014

5A

2029
  • Chloride
    • Nonpoint Source
    • Point Source

8.7 Miles

2006

5B

2005
  • Indicator Bacteria
    • Source Unknown

8.7 Miles

2014

5B

2012
  • Iron
    • Source Unknown

8.7 Miles

2010

5A

2029
  • Trash
    • Source Unknown

8.7 Miles

2014

5C



4

Santa Clara River Reach 6 (W Pier Hwy 99 to Bouquet Cyn Rd) (was named Santa Clara River Reach 8 on 2002 303(d) list)

River & Stream

4403.510000  /  18070102
  • Benthic Community Effects
    • Source Unknown

3.6 Miles

2014

5A

2027
  • Chloride
    • Nonpoint Source
    • Point Source

3.6 Miles

1998

5B

2005
    Chloride was relisted by USEPA in 2002.
  • Chlorpyrifos
    • Source Unknown

3.6 Miles

2006

5A

2029
  • Temperature, water
    • Source Unknown

3.6 Miles

2014

5A

2027
  • Toxicity
    • Source Unknown

3.6 Miles

2006

5A

2029


4

Santa Clara River Reach 11 (Piru Creek, from confluence with Santa Clara River Reach 4 to gaging station below Santa Felicia Dam)

River & Stream

40341000  /  18070102
  • Boron
    • Source Unknown

6.2 Miles

2006

5A

2019
  • Specific Conductance
    • Source Unknown

6.2 Miles

2010

5A

2021
  • Sulfates
    • Source Unknown

6.2 Miles

2006

5A

2019
  • Total Dissolved Solids
    • Source Unknown

6.2 Miles

2010

5A

2021


4

Santa Fe Dam Park Lake

Lake & Reservoir

40531000  /  18070105
  • Copper
    • Source Unknown

20 Acres

1996

5B

2012
  • Lead
    • Source Unknown

20 Acres

1996

5B

2012
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

20 Acres

2014

5A

2027
  • pH
    • Source Unknown

20 Acres

1996

5B

2012


4

Santa Monica Bay Offshore/Nearshore

Bay & Harbor

40513000  /  18070104
  • Arsenic
    • Source Unknown

146645 Acres

2014

5A

2027
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

146645 Acres

2014

5B

2012
  • Mercury
    • Source Unknown

146645 Acres

2014

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

146645 Acres

1800

5B

2012
  • Trash
    • Source Unknown

146645 Acres

2014

5B

2012


4

Santa Monica Canyon

River & Stream

40513000  /  18070104
  • Indicator Bacteria
    • Nonpoint Source

2.7 Miles

1996

5B

2003
  • Lead
    • Source Unknown

2.7 Miles

1996

5A

2019


4

Sawpit Creek

River & Stream

40531000  /  18070105
  • Bis(2ethylhexyl)phthalate (DEHP)
    • Source Unknown

3.9 Miles

2006

5A

2019
  • Indicator Bacteria
    • Source Unknown

3.9 Miles

2014

5A

2027


4

Sespe Creek (from 500 ft below confluence with Little Sespe Cr to headwaters)

River & Stream

40332020  /  18070102
  • Chloride
    • Source Unknown

54 Miles

2006

5A

2019
  • pH
    • Source Unknown

54 Miles

2006

5A

2019


4

Solstice Canyon Creek

River & Stream

40432000  /  18070104
  • Invasive Species
    • Source Unknown

4.8 Miles

2010

5A

2021


4

South San Jose Creek (Los Angeles County)

River & Stream

40551000  /  18070106
  • Ammonia
    • Source Unknown

3.3 Miles

2014

5A

2027
  • Toxicity
    • Source Unknown

3.3 Miles

2014

5A

2027
  • pH
    • Source Unknown

3.3 Miles

2014

5A

2027


4

Surfers Point at Seaside

Coastal & Bay Shoreline

40210000  /  18070101
  • Indicator Bacteria
    • Source Unknown

0.4 Miles

2002

5A

2015
    Area affected is the end of the access path via a wooden gate.


4

Tapo Canyon

River & Stream

40341000  /  18070103
  • Chlordane
    • Source Unknown

4.1 Miles

2014

5A

2027
  • Chloride
    • Source Unknown

4.1 Miles

2014

5A

2027
  • DDD (Dichlorodiphenyldichloroethane)
    • Source Unknown

4.1 Miles

2014

5A

2027
  • Malathion
    • Source Unknown

4.1 Miles

2014

5A

2027
  • Sulfates
    • Source Unknown

4.1 Miles

2014

5A

2027
  • Total Dissolved Solids
    • Source Unknown

4.1 Miles

2014

5A

2027
  • Toxicity
    • Source Unknown

4.1 Miles

2014

5A

2027


4

Timber Canyon

River & Stream

40331000  /  18070102
  • Chlorpyrifos
    • Source Unknown

5.4 Miles

2014

5A

2027


4

Topanga Canyon Creek

River & Stream

40411000  /  18070104
  • Lead
    • Source Unknown

8.6 Miles

1996

5A

2019


4

Torrance Carson Channel

River & Stream

40512000  /  18070104
  • Copper
    • Source Unknown

3.4 Miles

1996

5B

2012
  • Indicator Bacteria
    • Source Unknown

3.4 Miles

2014

5A

2007
  • Lead
    • Source Unknown

3.4 Miles

1996

5B

2012


4

Triunfo Canyon Creek Reach 1

River & Stream

40424000  /  18070104
  • Benthic Community Effects
    • Source Unknown

2.5 Miles

2014

5A

2029
  • Lead
    • Source Unknown

2.5 Miles

1996

5A

2019
  • Mercury
    • Source Unknown

2.5 Miles

1996

5A

2019
  • Sedimentation/Siltation
    • Source Unknown

2.5 Miles

2002

5A

2019


4

Triunfo Canyon Creek Reach 2

River & Stream

40424000  /  18070104
  • Benthic Community Effects
    • Source Unknown

3.3 Miles

2014

5A

2021
  • Lead
    • Source Unknown

3.3 Miles

1996

5A

2019
  • Mercury
    • Source Unknown

3.3 Miles

1996

5A

2019
  • Sedimentation/Siltation
    • Source Unknown

3.3 Miles

2002

5A

2019


4

Ventura Harbor: Ventura Keys

Bay & Harbor

40311000  /  18070103
  • Arsenic
    • Source Unknown

179 Acres

2014

5A

2027
  • Cadmium
    • Source Unknown

179 Acres

2014

5A

2027
  • Chlordane
    • Source Unknown

179 Acres

2014

5A

2027
  • Coliform Bacteria
    • Source Unknown

179 Acres

1996

5A

2019
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

179 Acres

2014

5A

2027
  • Dieldrin
    • Source Unknown

179 Acres

2014

5A

2027
  • Indicator Bacteria
    • Source Unknown

179 Acres

2014

5A

2027
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

179 Acres

2014

5A

2027


4

Ventura Marina Jetties

Coastal & Bay Shoreline

40311000  /  18070103
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

0.69 Miles

2006

5A

2019
  • PCBs (Polychlorinated biphenyls)
    • Source Unknown

0.69 Miles

2006

5A

2019


4

Ventura River Estuary

River & Stream

40210011  /  18070101
  • Algae
    • Source Unknown

0.2 Miles

1998

5B

2013
  • Eutrophic
    • Source Unknown

0.2 Miles

1998

5B

2013
  • Indicator Bacteria
    • Source Unknown

0.2 Miles

2014

5A

2019
    Stables and horse property may be the sources.
  • Trash
    • Agriculture-storm runoff
    • Recreational and Tourism Activities (non-boating)
    • Urban Runoff/Storm Sewers

0.2 Miles

1998

5B

2008


4

Ventura River Reach 1 and 2 (Estuary to Weldon Canyon)

River & Stream

40210011  /  18070101
  • Algae
    • Source Unknown

4.5 Miles

1996

5A

2019
  • Benthic Community Effects
    • Source Unknown

4.5 Miles

2014

5A

2029
  • Temperature, water
    • Source Unknown

4.5 Miles

2014

5A

2027


4

Ventura River Reach 3 (Weldon Canyon to Confl. w/ Coyote Cr)

River & Stream

40210011  /  18070101
  • Benthic Community Effects
    • Source Unknown

2.8 Miles

2014

5A

2029
  • Indicator Bacteria
    • Source Unknown

2.8 Miles

2010

5A

2021
  • Toxicity
    • Source Unknown

2.8 Miles

2014

5A

2027


4

Ventura River Reach 4 (Coyote Creek to Camino Cielo Rd)

River & Stream

40220021  /  18070101
  • Benthic Community Effects
    • Source Unknown

19 Miles

2014

5A

2029
  • Pumping
    • Source Unknown

19 Miles

1996

5A

2019
    This is Category 4c - impairment due to pollution and does not require a TMDL or any other specific regulatory action.
  • Temperature, water
    • Source Unknown

19 Miles

2014

5A

2027
  • Water Diversion
    • Source Unknown

19 Miles

1996

5A

2019
    This is Category 4c - impairment due to pollution and does not require a TMDL or any other specific regulatory action.


4

Walnut Creek Wash (Drains from Puddingstone Res)

River & Stream

40531000  /  18070106
  • Benthic Community Effects
    • Source Unknown

12 Miles

2014

5A

2012
  • Indicator Bacteria
    • Source Unknown

12 Miles

2010

5A

2027
  • pH
    • Source Unknown

12 Miles

1996

5A

2007


4

Westlake Lake

Lake & Reservoir

40425000  /  18070104
  • Algae
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

119 Acres

1996

5B

2003
  • Ammonia
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

119 Acres

1996

5B

2003
  • Eutrophic
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

119 Acres

1996

5B

2003
  • Lead
    • Source Unknown

119 Acres

1996

5A

2019
  • Organic Enrichment/Low Dissolved Oxygen
    • Agriculture-animal
    • Atmospheric Deposition
    • Golf course activities
    • Groundwater Loadings
    • Irrigated Crop Production
    • Major Municipal Point Source-dry and/or wet weather discharge
    • Onsite Wastewater Systems (Septic Tanks)
    • Urban Runoff/Storm Sewers

119 Acres

1996

5B

2003


4

Wheeler Canyon/Todd Barranca

River & Stream

40321000  /  18070102
  • Chlordane
    • Source Unknown

10 Miles

2014

5A

2027
  • Cypermethrin
    • Source Unknown

10 Miles

2014

5A

2027
  • DDT (Dichlorodiphenyltrichloroethane)
    • Source Unknown

10 Miles

2014

5A

2027
  • Nitrate and Nitrite
    • Nonpoint Source

10 Miles

1998

5B

2004
  • Sulfates
    • Source Unknown

10 Miles

2002

5A

2019
  • Total Dissolved Solids
    • Source Unknown

10 Miles

2002

5A

2019
  • Toxaphene
    • Source Unknown

10 Miles

2014

5A

2027
  • Toxicity
    • Source Unknown

10 Miles

2014

5A

2027


4

Wildlife Lake

Lake & Reservoir

40521000  /  18070105
  • Ammonia
    • Source Unknown

15 Acres

2014

5B

2004
  • Oxygen, Dissolved
    • Source Unknown

15 Acres

2014

5A

2027


4

Wilmington Drain

River & Stream

40342000  /  18070104
  • Indicator Bacteria
    • Source Unknown

0.56 Miles

2014

5A

2007