Regional Board 6 - Lahontan Region CATEGORY 4A Draft 2012 Integrated Report (CWA Section 303(d) List / 305(b) Report)
2012 CALIFORNIA LIST OF WATER QUALITY LIMITED SEGMENTS
BEING ADDRESSED BY USEPA APPROVED TMDLS
 
 REGION  WATER BODY NAME WATER TYPE WATERSHED*
CALWATER / USGS HUC
  • POLLUTANT
    • POTENTIAL SOURCES
  • Relevant Notes
ESTIMATED AREA ASSESSED FIRST YEAR LISTED ADDRESSED BY** USEPA TMDL APPROVAL DATE

6

Bronco Creek

River & Stream

8635.200501,8635.200503  /  16050102
  • Sedimentation/Siltation
    • Natural Sources
    • Nonpoint Source
    • Silviculture

1.2 Miles

1996

B

2009


6

Gray Creek (Nevada County)

River & Stream

63520052  /  16050102
  • Sedimentation/Siltation
    • Natural Sources
    • Nonpoint Source
    • Silviculture

2.8 Miles

1996

B

2009


6

Indian Creek Reservoir

Lake & Reservoir

63220010  /  16050201
  • Oxygen, Dissolved
    • Source Unknown

164 Acres

2012

B

2003
  • Phosphorus
    • Erosion/Siltation
    • Flow Regulation/Modification
    • Internal Nutrient Cycling (primarily lakes)
    • Pasture Grazing-Riparian and/or Upland
    • Wastewater

164 Acres

2002

B

2003
    Reservoir is eutrophic. Most significant source of nutrient loading is release of phosphorus from sediment. The USEPA approved the TMDL in 2003. Reductions in internal phosphorus loading from the sediment are expected to ameliorate other problems associated with eutrophication.


6

Squaw Creek

River & Stream

63520011  /  16050102
  • Sedimentation/Siltation
    • Construction/Land Development
    • Drainage/Filling Of Wetlands
    • Highway Maintenance and Runoff
    • Hydromodification
    • Natural Sources
    • Nonpoint Source
    • Other Urban Runoff
    • Recreational and Tourism Activities (non-boating)

5.8 Miles

1998

B

2007


6

Tahoe, Lake

Lake & Reservoir

63430010  /  16050101
  • Phosphorus
    • Atmospheric Deposition
    • Channel Erosion
    • Erosion/Siltation
    • Grazing-Related Sources
    • Highway Maintenance and Runoff
    • Highway/Road/Bridge Construction
    • Highway/Road/Bridge Runoff
    • Internal Nutrient Cycling (primarily lakes)
    • Land Development
    • Natural Sources
    • Nonpoint Source
    • Other Urban Runoff
    • Recreational and Tourism Activities (non-boating)
    • Sediment Resuspension (clean sediment)
    • Silviculture
    • Streambank Modification/Destabilization
    • Urban Runoff--Erosion and Sedimentation
    • Urban Runoff--Non-industrial Permitted
    • Urban Runoff/Storm Sewers

85364 Acres

2002

B

2011
  • Sedimentation/Siltation
    • Atmospheric Deposition
    • Channel Erosion
    • Channelization
    • Erosion/Siltation
    • Grazing-Related Sources
    • Highway/Road/Bridge Construction
    • Highway/Road/Bridge Runoff
    • Hydromodification
    • Land Development
    • Natural Sources
    • Nonpoint Source
    • Other Urban Runoff
    • Recreational and Tourism Activities (non-boating)
    • Removal of Riparian Vegetation
    • Sediment Resuspension (clean sediment)
    • Silviculture
    • Streambank Modification/Destabilization
    • Urban Runoff--Erosion and Sedimentation
    • Urban Runoff/Storm Sewers

85364 Acres

2006

B

2011


6

Truckee River

River & Stream

63510010  /  16050101
  • Sedimentation/Siltation
    • Channel Erosion
    • Construction/Land Development
    • Erosion/Siltation
    • Highway/Road/Bridge Construction
    • Natural Sources
    • Nonpoint Source
    • Range Grazing-Riparian and/or Upland
    • Recreational and Tourism Activities (non-boating)
    • Silviculture
    • Snow skiing activities
    • Streambank Modification/Destabilization

39 Miles

1996

B

2009