attachment a 303(d) list for bodies of water from rwqcb ......in southern california...
TRANSCRIPT
Regulatory_Issues_Trends.doc
Attachment A 303(d) List for Bodies of Water
from RWQCB Basin Plans in Southern California
Regulatory_Issues_Trends.doc
Attachment A-1 Lahontan RWQCB Basin Plan 303(d) List
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Big Meadow Creek6 R 63410011Pathogens 1.4 2019Miles
Range Grazing-Riparian and/or Upland
Natural Sources
Recreational and Tourism Activities (non-boating)
Blackwood Creek6 R 63420021Iron 5.9 2015
Miles
Erosion/Siltation
Natural Sources
Nonpoint Source
Nitrogen 5.9 2008Nitrogen loading from creek to be addressed during development of Lake Tahoe TMDL, but a more specific TMDL may be needed for Blackwood Creek.
Miles
Silviculture
Resource Extraction
Hydromodification
Streambank Modification/Destabilization
Erosion/Siltation
Atmospheric Deposition
Natural Sources
Nonpoint Source
Phosphorus 5.9 2008Phosphorus loading from creek to be addressed during development of Lake Tahoe TMDL, but a more specific TMDL for creek may be needed.
Miles
Grazing-Related Sources
Silviculture
Resource Extraction
Hydromodification
Streambank Modification/Destabilization
Erosion/Siltation
Natural Sources
Nonpoint Source
Page 1 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Sedimentation/Siltation 5.9 2008Creek affected by past gravel quarry operations and other watershed disturbance including grazing and timber harvest.
Miles
Range Grazing-Riparian and/or Upland
Silviculture
Construction/Land Development
Surface Runoff
Resource Extraction
Hydromodification
Streambank Modification/Destabilization
Erosion/Siltation
Atmospheric Deposition
Natural Sources
Recreational and Tourism Activities (non-boating)
Nonpoint Source
Bodie Creek6 R 63020031Mercury 11 2019
Miles
Source Unknown
Page 2 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Bridgeport Reservoir6 L 63030050Nitrogen 2614 2006Acres
Grazing-Related Sources
Pasture Grazing-Riparian and/or Upland
Other Urban Runoff
Highway/Road/Bridge Runoff
Wastewater - land disposal
Flow Regulation/Modification
Removal of Riparian Vegetation
Streambank Modification/Destabilization
Channel Erosion
Erosion/Siltation
Marinas and Recreational Boating
Atmospheric Deposition
Internal Nutrient Cycling (primarily lakes)
Sediment Resuspension
Natural Sources
Recreational and Tourism Activities (non-boating)
Phosphorus 2614 2006Acres
Grazing-Related Sources
Pasture Grazing-Riparian and/or Upland
Other Urban Runoff
Highway/Road/Bridge Runoff
Wastewater - land disposal
Flow Regulation/Modification
Removal of Riparian Vegetation
Streambank Modification/Destabilization
Channel Erosion
Erosion/Siltation
Marinas and Recreational Boating
Atmospheric Deposition
Internal Nutrient Cycling (primarily lakes)
Natural Sources
Recreational and Tourism Activities (non-boating)
Page 3 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Sedimentation/Siltation 2614 2006Acres
Grazing-Related Sources
Streambank Modification/Destabilization
Erosion/Siltation
Sediment Resuspension
Bronco Creek6 R 63520053Sedimentation/Siltation 1.3 2006
Watershed disturbance in naturally highly erosive watershed.Miles
Silviculture
Natural Sources
Nonpoint Source
Buckeye Creek6 R 63040022Pathogens 17 2019
Miles
Grazing-Related Sources
Pasture Grazing-Riparian and/or Upland
Range Grazing-Riparian and/or Upland
Natural Sources
Recreational and Tourism Activities (non-boating)
Carson River, West Fork (Headwaters to Woodfords)
6 R 63320014
Nitrogen 18 2019
Miles
Silviculture
Onsite Wastewater Systems (Septic Tanks)
Habitat Modification
Removal of Riparian Vegetation
Streambank Modification/Destabilization
Channel Erosion
Erosion/Siltation
Atmospheric Deposition
Highway Maintenance and Runoff
Natural Sources
Recreational and Tourism Activities (non-boating)
Page 4 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Phosphorus 18 2019Revision of standard may be considered.
Miles
Silviculture
Habitat Modification
Removal of Riparian Vegetation
Streambank Modification/Destabilization
Channel Erosion
Erosion/Siltation
Atmospheric Deposition
Highway Maintenance and Runoff
Natural Sources
Recreational and Tourism Activities (non-boating)
Sodium 18 2019
Miles
Onsite Wastewater Systems (Septic Tanks)
Atmospheric Deposition
Highway Maintenance and Runoff
Natural Sources
Recreational and Tourism Activities (non-boating)
Carson River, West Fork (Paynesville to State Line)
6 R 63310013
Pathogens 3.3 2019
Miles
Pasture Grazing-Riparian and/or Upland
Agriculture-storm runoff
Agriculture-irrigation tailwater
Page 5 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Carson River, West Fork (Woodfords to Paynesville)
6 R 63310012
Nitrogen 3.6 2019Revision of standards may be considered.
Miles
Pasture Grazing-Riparian and/or Upland
Range Grazing-Riparian and/or Upland
Agriculture-storm runoff
Agriculture-subsurface drainage
Agriculture-irrigation tailwater
Silviculture
Wastewater - land disposal
Habitat Modification
Removal of Riparian Vegetation
Streambank Modification/Destabilization
Channel Erosion
Erosion/Siltation
Atmospheric Deposition
Highway Maintenance and Runoff
Natural Sources
Recreational and Tourism Activities (non-boating)
Pathogens 3.6 2019
Miles
Pasture Grazing-Riparian and/or Upland
Agricultural Return Flows
Natural Sources
Recreational and Tourism Activities (non-boating)
Page 6 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Sodium 3.6 2019
Miles
Agriculture-storm runoff
Agriculture-irrigation tailwater
Agriculture-grazing
Wastewater - land disposal
Onsite Wastewater Systems (Septic Tanks)
Atmospheric Deposition
Highway Maintenance and Runoff
Natural Sources
Recreational and Tourism Activities (non-boating)
Clearwater Creek6 R 63040051Sedimentation/Siltation 12 2006
Listed on basis of limited information; additional monitoring may support delisting.Miles
Range Grazing-Riparian and/or Upland
Construction/Land Development
Highway Maintenance and Runoff
Crowley Lake6 L 60310090Ammonia 4861 2019
Acres
Source Unknown
Oxygen, Dissolved 4861 2019
Acres
Source Unknown
Donner Lake6 L 63520021Priority Organics 819 2019
OEHHA is studying the lake to determine whether a fish consumption advisory is needed. There may be a 6 to 13 year period for TMDL development.
Acres
Source Unknown
Page 7 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Eagle Lake (Lassen County)6 L 63732000Nitrogen 20704 2019
Acres
Agriculture
Grazing-Related Sources
Silviculture
Other Urban Runoff
Highway/Road/Bridge Runoff
Wastewater
Onsite Wastewater Systems (Septic Tanks)
Marinas and Recreational Boating
Atmospheric Deposition
Internal Nutrient Cycling (primarily lakes)
Sediment Resuspension
Natural Sources
Recreational and Tourism Activities (non-boating)
Nonpoint Source
Phosphorus 20704 2019
Acres
Grazing-Related Sources
Silviculture
Other Urban Runoff
Highway/Road/Bridge Runoff
Wastewater
Onsite Wastewater Systems (Septic Tanks)
Marinas and Recreational Boating
Atmospheric Deposition
Internal Nutrient Cycling (primarily lakes)
Sediment Resuspension
Natural Sources
Recreational and Tourism Activities (non-boating)
Nonpoint Source
Page 8 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
East Walker River, above Bridgeport Reservoir
6 R 63030050
Pathogens 7.2 2019
Miles
Pasture Grazing-Riparian and/or Upland
Other Urban Runoff
Natural Sources
Recreational and Tourism Activities (non-boating)
East Walker River, below Bridgeport Reservoir
6 R 63030050
Nitrogen 8 2019
Miles
Grazing-Related Sources
Pasture Grazing-Riparian and/or Upland
Range Grazing-Riparian and/or Upland
Highway/Road/Bridge Runoff
Upstream Impoundment
Flow Regulation/Modification
Streambank Modification/Destabilization
Erosion/Siltation
Atmospheric Deposition
Natural Sources
Phosphorus 8 2019
Miles
Pasture Grazing-Riparian and/or Upland
Range Grazing-Riparian and/or Upland
Other Urban Runoff
Highway/Road/Bridge Runoff
Upstream Impoundment
Flow Regulation/Modification
Streambank Modification/Destabilization
Erosion/Siltation
Atmospheric Deposition
Natural Sources
Page 9 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Sedimentation/Siltation 8 2019
Miles
Grazing-Related Sources
Highway/Road/Bridge Runoff
Urban Runoff--Erosion and Sedimentation
Upstream Impoundment
Erosion/Siltation
General Creek6 R 63420030Iron 9.1 2019
Miles
Silviculture
Natural Sources
Phosphorus 9.1 2019
Miles
Erosion/Siltation
Atmospheric Deposition
Natural Sources
Gray Creek (Nevada County)6 R 63520052Sedimentation/Siltation 2.8 2006
Sediment from disturbance of naturally highly erosive watershed.Miles
Silviculture
Natural Sources
Nonpoint Source
Haiwee Reservoir6 L 62410071Copper 1703 2004
Copper problems related to algicide used to prevent taste/odor problems in drinking water supplies. TMDL development in progress. A determination of whether or not this water body is a water of the United States will be made by the Regional Water Quality Control Board.
Acres
Other
Page 10 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Heavenly Valley Creek (source to USFS boundary)
6 R 63410031
Chloride 2 2019Chloride standard may be revised.
Miles
Highway/Road/Bridge Runoff
Atmospheric Deposition
Natural Sources
Source Unknown
Phosphorus 2 2019
Miles
Erosion/Siltation
Atmospheric Deposition
Natural Sources
Recreational and Tourism Activities (non-boating)
Heavenly Valley Creek (USFS boundary to Trout Creek)
6 R 63410031
Chloride 1.4 2019
Miles
Highway/Road/Bridge Runoff
Atmospheric Deposition
Natural Sources
Source Unknown
Sedimentation/Siltation 1.4 2019
Miles
Construction/Land Development
Land Development
Hydromodification
Habitat Modification
Recreational and Tourism Activities (non-boating)
Nonpoint Source
Page 11 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Honey Lake6 S 63710060Arsenic 57756 2019
Arsenic is ultimately from natural sources, but lake is affected by geothermal discharges. Further study needed to determine need for TMDL.
Acres
Geothermal Development
Flow Regulation/Modification
Natural Sources
Nonpoint Source
Salinity/TDS/Chlorides 57756 2019Further study needed to determine extent of impairment and need for TMDL.
Acres
Agriculture
Agricultural Return Flows
Geothermal Development
Agricultural Water Diversion
Sediment Resuspension
Natural Sources
Nonpoint Source
Honey Lake Area Wetlands6 W 63710060Metals 62590 2019
Additional monitoring needed to determine extent of impairment and need for TMDLAcres
Agriculture
Geothermal Development
Natural Sources
Nonpoint Source
Honey Lake Wildfowl Management Ponds6 S 63720095Metals 665 2019
Further monitoring needed to determine extent of impairment and need for TMDL.Acres
Agriculture
Geothermal Development
Natural Sources
Salinity/TDS/Chlorides 665 2019Further monitoring needed to determine extent of impairment and need for TMDL.
Acres
Agriculture
Geothermal Development
Natural Sources
Page 12 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Trace Elements 665 2019Further monitoring needed to determine extent of impairment and need for TMDL.
Acres
Geothermal Development
Nurseries
Hot Springs Canyon Creek6 R 63030042Sedimentation/Siltation 2.9 2008
Listed on basis of limited data; further monitoring may support delisting.Miles
Range Grazing-Riparian and/or Upland
Indian Creek (Alpine County)6 R 63220010Pathogens 13 2019
Miles
Grazing-Related Sources
Pasture Grazing-Riparian and/or Upland
Mammoth Creek6 R 60310053Mercury 12 2019
Miles
Source Unknown
Metals 12 2019Needs monitoring to determine current extent of impairment and need for TMDL.
Miles
Other Urban Runoff
Natural Sources
Nonpoint Source
Monitor Creek6 R 63210070Aluminum 4 2019
TMDL to be coordinated with CERCLA remediation.Miles
Mill Tailings
Mine Tailings
Acid Mine Drainage
Inactive Mining
Natural Sources
Nonpoint/Point Source
Page 13 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Iron 4 2019TMDL to be coordinated with CERCLA remediation.
Miles
Mill Tailings
Mine Tailings
Acid Mine Drainage
Inactive Mining
Natural Sources
Nonpoint/Point Source
Manganese 4 2019TMDL to be coordinated with CERCLA remediation.
Miles
Mill Tailings
Mine Tailings
Acid Mine Drainage
Inactive Mining
Natural Sources
Nonpoint/Point Source
Silver 4 2019TMDL to be coordinated with CERCLA remediation.
Miles
Mill Tailings
Mine Tailings
Acid Mine Drainage
Inactive Mining
Natural Sources
Nonpoint Source
Sulfates 4 2019TMDL to be coordinated with CERCLA remediation.
Miles
Mill Tailings
Mine Tailings
Acid Mine Drainage
Inactive Mining
Nonpoint/Point Source
Page 14 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Total Dissolved Solids 4 2019TMDL to be coordinated with CERCLA remediation.
Miles
Mill Tailings
Mine Tailings
Acid Mine Drainage
Inactive Mining
Natural Sources
Nonpoint/Point Source
Pleasant Valley Reservoir6 L 60320000Organic Enrichment/Low Dissolved Oxygen 99 2019Acres
Flow Regulation/Modification
Nonpoint Source
Robinson Creek (Hwy 395 to Bridgeport Res)
6 R 63030050
Pathogens 1.8 2019
Miles
Pasture Grazing-Riparian and/or Upland
Agricultural Return Flows
Onsite Wastewater Systems (Septic Tanks)
Natural Sources
Recreational and Tourism Activities (non-boating)
Robinson Creek (Twin Lakes to Hwy 395)6 R 63030050Pathogens 9.1 2019
Miles
Pasture Grazing-Riparian and/or Upland
Onsite Wastewater Systems (Septic Tanks)
Natural Sources
Recreational and Tourism Activities (non-boating)
Page 15 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Squaw Creek6 R 63520011Sedimentation/Siltation 5.8 2006
Miles
Construction/Land Development
Other Urban Runoff
Hydromodification
Drainage/Filling Of Wetlands
Highway Maintenance and Runoff
Natural Sources
Recreational and Tourism Activities (non-boating)
Nonpoint Source
Susan River6 R 63720095Mercury 58 2019
Miles
Source Unknown
Unknown Toxicity 58 2007
Miles
Source Unknown
Swauger Creek6 R 63040012Pathogens 14 2019
Miles
Pasture Grazing-Riparian and/or Upland
Range Grazing-Riparian and/or Upland
Onsite Wastewater Systems (Septic Tanks)
Natural Sources
Recreational and Tourism Activities (non-boating)
Page 16 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Phosphorus 14 2019
Miles
Pasture Grazing-Riparian and/or Upland
Range Grazing-Riparian and/or Upland
Highway/Road/Bridge Runoff
Surface Runoff
Streambank Modification/Destabilization
Erosion/Siltation
Atmospheric Deposition
Natural Sources
Nonpoint Source
Page 17 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Tahoe, Lake6 L 63430010Nitrogen 85364 2007
Acres
Grazing-Related Sources
Silviculture
Construction/Land Development
Land Development
Urban Runoff/Storm Sewers
Urban Runoff--Non-industrial Permitted
Other Urban Runoff
Highway/Road/Bridge Runoff
Surface Runoff
Urban Runoff--Erosion and Sedimentation
Hydromodification
Habitat Modification
Removal of Riparian Vegetation
Streambank Modification/Destabilization
Drainage/Filling Of Wetlands
Channel Erosion
Erosion/Siltation
Marinas and Recreational Boating
Atmospheric Deposition
Highway Maintenance and Runoff
Internal Nutrient Cycling (primarily lakes)
Natural Sources
Recreational and Tourism Activities (non-boating)
Golf course activities
Groundwater Loadings
Page 18 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Phosphorus 85364 2007
Acres
Grazing-Related Sources
Silviculture
Highway/Road/Bridge Construction
Land Development
Urban Runoff/Storm Sewers
Urban Runoff--Non-industrial Permitted
Other Urban Runoff
Highway/Road/Bridge Runoff
Urban Runoff--Erosion and Sedimentation
Streambank Modification/Destabilization
Channel Erosion
Erosion/Siltation
Atmospheric Deposition
Highway Maintenance and Runoff
Internal Nutrient Cycling (primarily lakes)
Sediment Resuspension
Natural Sources
Recreational and Tourism Activities (non-boating)
Nonpoint Source
Page 19 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Sedimentation/Siltation 85364 2007
Acres
Grazing-Related Sources
Silviculture
Highway/Road/Bridge Construction
Land Development
Urban Runoff/Storm Sewers
Other Urban Runoff
Highway/Road/Bridge Runoff
Urban Runoff--Erosion and Sedimentation
Hydromodification
Channelization
Removal of Riparian Vegetation
Streambank Modification/Destabilization
Channel Erosion
Erosion/Siltation
Atmospheric Deposition
Sediment Resuspension
Natural Sources
Recreational and Tourism Activities (non-boating)
Nonpoint Source
Tallac Creek (below Hwy 89)6 R 63410041Pathogens 1.3 2019Miles
Grazing-Related Sources
Pasture Grazing-Riparian
Trout Creek (above Hwy 50)6 R 63410020Iron 10 2019
Standards revision to be consideredMiles
Urban Runoff--Non-industrial Permitted
Erosion/Siltation
Natural Sources
Page 20 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Nitrogen 10 2019Nitrogen loading from creek to be addressed during development of Lake Tahoe TMDL, but a more specific TMDL may be needed for Trout Creek.
Miles
Pasture Grazing-Riparian and/or Upland
Urban Runoff--Non-industrial Permitted
Erosion/Siltation
Atmospheric Deposition
Pathogens 10 2019Miles
Source Unknown
Phosphorus 10 2019Phosphorus loading from creek to be considered during development of Lake Tahoe TMDL, but a more specific TMDL may be needed for Trout Creek.
Miles
Pasture Grazing-Riparian and/or Upland
Urban Runoff--Non-industrial Permitted
Erosion/Siltation
Atmospheric Deposition
Trout Creek (below Hwy 50)6 R 63410042Iron 0.78 2019Miles
Urban Runoff--Non-industrial Permitted
Erosion/Siltation
Natural Sources
Nitrogen 0.78 2019Nitrogen loading from creek to be addressed during development of Lake Tahoe TMDL, but a more specific TMDL may be needed for Trout Creek.
Miles
Urban Runoff--Non-industrial Permitted
Erosion/Siltation
Atmospheric Deposition
Pathogens 0.78 2019Miles
Pasture Grazing-Riparian
Natural Sources
Recreational and Tourism Activities (non-boating)
Transient encampments
Page 21 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Phosphorus 0.78 2019Phosphorus loading from creek to be addressed during development of Lake Tahoe TMDL, but a more specific TMDL may be needed for Trout Creek.
Miles
Urban Runoff--Non-industrial Permitted
Erosion/Siltation
Atmospheric Deposition
Truckee River6 R 63510010Sedimentation/Siltation 39 2006
Watershed disturbance including ski resorts, silvicultural activities, urban development, reservoir construction and management; highly erosive subwatersheds.
Miles
Range Grazing-Riparian and/or Upland
Silviculture
Construction/Land Development
Highway/Road/Bridge Construction
Streambank Modification/Destabilization
Channel Erosion
Erosion/Siltation
Natural Sources
Recreational and Tourism Activities (non-boating)
Snow skiing activities
Nonpoint Source
Truckee River, Upper (above Christmas Valley)
6 R 63410010
Iron 4.5 2019
Miles
Natural Sources
Pathogens 4.5 2019
Miles
Grazing-Related Sources
Natural Sources
Recreational and Tourism Activities (non-boating)
Page 22 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Phosphorus 4.5 2019Phosphorus loading from river to be addressed during development of Lake Tahoe TMDL, but a more specific TMDL may be needed for the Upper Truckee River.
Miles
Grazing-Related Sources
Silviculture
Natural Sources
Truckee River, Upper (below Christmas Valley)
6 R 63410042
Iron 11 2019
Miles
Erosion/Siltation
Natural Sources
Unknown Nonpoint Source
Phosphorus 11 2019Phosphorus loading from river to be addressed in development of Lake Tahoe TMDL, but a more specific TMDL may be needed for the Upper Truckee River.
Miles
Silviculture
Construction/Land Development
Hydromodification
Channelization
Removal of Riparian Vegetation
Streambank Modification/Destabilization
Erosion/Siltation
Atmospheric Deposition
Highway Maintenance and Runoff
Natural Sources
Unknown Nonpoint Source
Twin Lakes (Owens HU)6 L 60310051Nitrogen 26 2019
Monitoring needed to confirm extent of impairment and need for TMDL.Acres
Agriculture
Grazing-Related Sources
Construction/Land Development
Land Development
Other Urban Runoff
Atmospheric Deposition
Page 23 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Phosphorus 26 2019Monitoring needed to confirm degree of impairment and need for TMDL.
Acres
Agriculture
Grazing-Related Sources
Construction/Land Development
Land Development
Other Urban Runoff
Ward Creek6 R 63420020Iron 5.7 2015
Miles
Silviculture
Other Urban Runoff
Highway/Road/Bridge Runoff
Channel Erosion
Erosion/Siltation
Natural Sources
Nitrogen 5.7 2008Nitrogen loading from creek to be addressed during development of Lake Tahoe TMDL, but a more specific TMDL may be needed for Ward Creek.
Miles
Silviculture
Other Urban Runoff
Highway/Road/Bridge Runoff
Channel Erosion
Erosion/Siltation
Atmospheric Deposition
Natural Sources
Page 24 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
Phosphorus 5.7 2008Phosphorus loading from creek to be addressed during development of Lake Tahoe TMDL, but a more specific TMDL may be needed for Ward Creek.
Miles
Silviculture
Other Urban Runoff
Highway/Road/Bridge Runoff
Urban Runoff--Erosion and Sedimentation
Channel Erosion
Erosion/Siltation
Atmospheric Deposition
Natural Sources
Sedimentation/Siltation 5.7 2008
Miles
Silviculture
Land Development
Urban Runoff/Storm Sewers
Highway/Road/Bridge Runoff
Channel Erosion
Nonpoint Source
Wolf Creek (Alpine County)6 R 63210031Sedimentation/Siltation 12 2019Miles
Range Grazing-Riparian and/or Upland
Silviculture
Nonpoint Source
Page 25 of 26
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LAHONTAN REGIONAL WATER QUALITY CONTROL BOARD
"Calwater Watershed" is the State Water Resources Control Board hydrological subunit area or an even smaller area delineation.CALWATER WATERSHED
ABBREVIATIONS
GROUP A PESTICIDES OR CHEM A
aldrin, dieldrin, chlordane, endrin, heptachlor, heptachlor epoxide, hexachlorocyclohexane (including lindane), endosulfan, and toxaphene
WATER BODY TYPE
B = Bays and HarborsC = Coastal Shorelines/BeachesE = EstuariesL = Lakes/ReserviorsR = Rivers and StreamsS = Saline LakesT = Wetlands, TidalW= Wetlands, Freshwater
REGIONAL WATER QUALITY CONTROL BOARDS
1 North Coast2 San Francisco Bay3 Central Coast4 Los Angeles5 Central Valley6 Lahontan7 Colorado River Basin8 Santa Ana9 San Diego
Page 26 of 26
Regulatory_Issues_Trends.doc
Attachment A-2 Los Angeles RWQCB Basin Plan 303(d) List
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Abalone Cove Beach4 C 40511000DDT (sediment) 1.1 2019
Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.1 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Alamitos Bay4 B 40512000Indicator bacteria 328 2019
This listing was made by USEPA for 2006. The listing includes the area of Alamitos Bay at Shorefloat, 1st St. and Bayshore, 2nd St. Bridge and Bayshore, 56th Place - bayside.
Acres
Source Unknown
Aliso Canyon Wash4 R 40521000Copper 10 2019
Miles
Source Unknown
Fecal Coliform 10 2019
Miles
Source Unknown
Amarillo Beach4 C 40431000DDT 0.64 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.64 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Arroyo Seco Reach 1 (LA River to West Holly Ave.)
4 R 40515010
Coliform Bacteria 5.2 2009
Miles
Nonpoint Source
Trash 5.2 2007
Miles
Nonpoint Source
Page 1 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Arroyo Seco Reach 2 (Figueroa St. to Riverside Dr.)
4 R 40515010
Coliform Bacteria 4.4 2009
Miles
Nonpoint Source
Trash 4.4 2007
Miles
Nonpoint Source
Avalon Beach4 C 40511000Indicator bacteria 0.67 2019
Area affected is between Pier and BB restaurant (2/3), between Pier and BB restaurant (1/3), between storm drain and Pier (1/3). and between BB restaurant and the Tuna Club.
Miles
Nonpoint/Point Source
Ballona Creek4 R 40513000Cadmium (sediment) 6.5 2005
Miles
Nonpoint/Point Source
Cyanide 6.5 2019
Miles
Source Unknown
Silver (sediment) 6.5 2005
Miles
Nonpoint Source
Ballona Creek Estuary4 R 40513000Shellfish Harvesting Advisory 2.3 2006
Miles
Nonpoint/Point Source
Ballona Creek Wetlands4 T 40517000Exotic Vegetation 289 2019
Acres
Nonpoint Source
Habitat alterations 289 2019
Acres
Nonpoint Source
Hydromodification 289 2019
Acres
Nonpoint Source
Page 2 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Reduced Tidal Flushing 289 2019
Acres
Nonpoint Source
Bell Creek4 R 40521000Coliform Bacteria 8.9 2009Miles
Nonpoint/Point Source
Big Rock Beach4 C 40431000DDT 0.74 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.74 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Bluff Cove Beach4 C 40511000DDT 0.55 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.55 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Brown Barranca/Long Canyon4 R 40321000Nitrate and Nitrite 2.6 2003Miles
Nonpoint Source
Burbank Western Channel4 R 40521000Cyanide 13 2019
Miles
Source Unknown
Trash 13 2002
Miles
Nonpoint/Point Source
Cabrillo Beach (Outer)4 C 40512000DDT 0.58 2019
Fish consumption advisory for DDT.Miles
Nonpoint Source
Page 3 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
PCBs (Polychlorinated biphenyls) 0.58 2019Fish consumption advisory for PCBs.
Miles
Nonpoint Source
Calleguas Creek Reach 1 (was Mugu Lagoon on 1998 303(d) list)
4 E 40311000
Endosulfan (tissue) 344 2005For 2006, endosulfan (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Acres
Nonpoint Source
Calleguas Creek Reach 2 (estuary to Potrero Rd- was Calleguas Creek Reaches 1 and 2 on 1998 303d list)
4 R 40312000
ChemA (tissue) 4.3 2005Historical use of pesticides and lubricants. For 2006, ChemA (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Endosulfan (tissue) 4.3 2005For 2006, endosulfan (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Fecal Coliform 4.3 2006Area affected is at the mouth of the creek.
Miles
Nonpoint/Point Source
Sedimentation/Siltation 4.3 2005For 2006, sedimentation/siltation was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Agriculture
Natural Sources
Calleguas Creek Reach 3 (Potrero Road upstream to confluence with Conejo Creek on 1998 303d list)
4 R 40312000
Chloride 3.5 2002
Miles
Nonpoint/Point Source
Sedimentation/Siltation 3.5 2005For 2006, sedimentation/siltation was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Agriculture
Natural Sources
Page 4 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Total Dissolved Solids 3.5 2019
Miles
Nonpoint/Point Source
Calleguas Creek Reach 4 (was Revolon Slough Main Branch: Mugu Lagoon to Central Avenue on 1998 303d list)
4 R 40311000
Boron 7.2 2019This listing was made by USEPA.
Miles
Nonpoint Source
ChemA (tissue) 7.2 2005Historical use of pesticides and lubricants. For 2006, ChemA (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Endosulfan (tissue & sediment) 7.2 2005For 2006, endosulfan (tissue & sediment) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Fecal Coliform 7.2 2006
Miles
Nonpoint/Point Source
Sedimentation/Siltation 7.2 2005For 2006, sedimentation/siltation was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Agriculture
Natural Sources
Sulfates 7.2 2019This listing was made by USEPA.
Miles
Nonpoint Source
Total Dissolved Solids 7.2 2019This listing was made by USEPA.
Miles
Nonpoint Source
Trash 7.2 2019
Miles
Nonpoint Source
Page 5 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Calleguas Creek Reach 5 (was Beardsley Channel on 1998 303d list)
4 R 40311000
ChemA (tissue) 4.3 2005For 2006, ChemA was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Dacthal (sediment) 4.3 2005For 2006, dacthal (sediment) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Endosulfan (tissue & sediment) 4.3 2005For 2006, endosulfan (tissue & sediment) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Sedimentation/Siltation 4.3 2005For 2006, sedimentation/siltation was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Agriculture
Natural Sources
Trash 4.3 2019
Miles
Nonpoint Source
Calleguas Creek Reach 6 ( was Arroyo Las Posas Reaches 1 and 2 on 1998 303d list)
4 R 40362000
Chloride 15 2002
Miles
Nonpoint/Point Source
Fecal Coliform 15 2006
Miles
Nonpoint/Point Source
Sedimentation/Siltation 15 2005For 2006, sedimentation/siltation was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Agriculture
Natural Sources
Sulfates 15 2019
Miles
Nonpoint/Point Source
Page 6 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Total Dissolved Solids 15 2019
Miles
Nonpoint/Point Source
Calleguas Creek Reach 7 (was Arroyo Simi Reaches 1 and 2 on 1998 303d list)
4 R 40367000
Boron 14 2019
Miles
Nonpoint Source
Chloride 14 2002
Miles
Nonpoint Source
Fecal Coliform 14 2006
Miles
Nonpoint Source
Sedimentation/Siltation 14 2005For 2006, sedimentation/siltation was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Agriculture
Natural Sources
Sulfates 14 2019
Miles
Nonpoint Source
Total Dissolved Solids 14 2019
Miles
Nonpoint Source
Calleguas Creek Reach 8 (was Tapo Canyon Reach 1)
4 R 40366000
Boron 7.2 2019
Miles
Nonpoint/Point Source
Chloride 7.2 2002
Miles
Nonpoint/Point Source
Sedimentation/Siltation 7.2 2005For 2006, sedimentation/siltation was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Page 7 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Sulfates 7.2 2019
Miles
Nonpoint/Point Source
Total Dissolved Solids 7.2 2019
Miles
Nonpoint/Point Source
Calleguas Creek Reach 9A (was lower part of Conejo Creek Reach 1 on 1998 303d list)
4 R 40312000
ChemA (tissue) 1.7 2005For 2006, ChemA (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Endosulfan (tissue) 1.7 2005For 2006, endosulfan (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Fecal Coliform 1.7 2006
Miles
Nonpoint/Point Source
Lindane/Hexachlorocyclohexane/HCH (tissue) 1.7 2005Historical use of pesticides and lubricants. For 2006, lindane/hexachlorocyclohexane/HCH (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Sulfates 1.7 2019
Miles
Nonpoint/Point Source
Total Dissolved Solids 1.7 2019
Miles
Nonpoint/Point Source
Calleguas Creek Reach 9B (was part of Conejo Creek Reaches 1 and 2 on 1998 303d list)
4 R 40363000
ChemA (tissue) 6.2 2005For 2006, ChemA (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Chloride 6.2 2002
Miles
Nonpoint/Point Source
Page 8 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Endosulfan (tissue) 6.2 2005For 2006, endosulfan (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Fecal Coliform 6.2 2006
Miles
Nonpoint/Point Source
Sulfates 6.2 2019
Miles
Nonpoint/Point Source
Total Dissolved Solids 6.2 2019
Miles
Nonpoint/Point Source
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)
4 R 40364000
ChemA (tissue) 3 2005For 2006, ChemA (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Chloride 3 2019
Miles
Nonpoint/Point Source
Endosulfan (tissue) 3 2005For 2006, endosulfan (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Fecal Coliform 3 2006
Miles
Nonpoint Source
Sulfates 3 2019
Miles
Nonpoint Source
Total Dissolved Solids 3 2019
Miles
Nonpoint/Point Source
Page 9 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Calleguas Creek Reach 11 (Arroyo Santa Rosa, was part of Conejo Creek Reach 3 on 1998 303d list)
4 R 40365000
ChemA (tissue) 8.7 2005For 2006, ChemA (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Endosulfan (tissue) 8.7 2005For 2006, endosulfan (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Fecal Coliform 8.7 2006
Miles
Nonpoint/Point Source
Sedimentation/Siltation 8.7 2005For 2006, sedimentation/siltation was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Agriculture
Natural Sources
Sulfates 8.7 2019
Miles
Nonpoint/Point Source
Total Dissolved Solids 8.7 2019
Miles
Nonpoint/Point Source
Calleguas Creek Reach 12 (was Conejo Creek/Arroyo Conejo North Fork on 1998 303d list)
4 R 40364000
Sulfates 5.5 2019
Miles
Nonpoint/Point Source
Total Dissolved Solids 5.5 2019
Miles
Nonpoint/Point Source
Page 10 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Calleguas Creek Reach 13 (Conejo Creek South Fork, was Conejo Cr Reach 4 and part of Reach 3 on 1998 303d list)
4 R 40368000
ChemA (tissue) 17 2005For 2006, ChemA (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Chloride 17 2002
Miles
Nonpoint/Point Source
Endosulfan (tissue) 17 2005For 2006, endosulfan (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Nonpoint Source
Sulfates 17 2019
Miles
Nonpoint/Point Source
Total Dissolved Solids 17 2019
Miles
Nonpoint/Point Source
Canada Larga (Ventura River Watershed)4 R 40210010Fecal Coliform 8 2019
Horse stables, land use, cattle, and wildlife may be sources.Miles
Nonpoint Source
Low Dissolved Oxygen 8 2019Miles
Nonpoint Source
Carbon Beach4 C 40416000DDT 1.5 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.5 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Castlerock Beach4 C 40513000DDT 0.21 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
Page 11 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
PCBs (Polychlorinated biphenyls) 0.21 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Channel Islands Harbor4 B 40311000Lead (sediment) 209 2019Acres
Nonpoint Source
Zinc (sediment) 209 2019Acres
Nonpoint Source
Channel Islands Harbor Beach 4 C 40311000Indicator bacteria 0.08 2019Miles
Nonpoint/Point Source
Colorado Lagoon4 T 40512000Chlordane (tissue & sediment) 13 2019
Acres
Nonpoint Source
DDT (tissue) 13 2019
Acres
Nonpoint Source
Dieldrin (tissue) 13 2019
Acres
Nonpoint Source
Indicator bacteria 13 2019This listing was made by USEPA for 2006. This listing includes the north, center, and south areas of the lagoon.
Acres
Source Unknown
Lead (sediment) 13 2019
Acres
Nonpoint Source
PAHs (Polycyclic Aromatic Hydrocarbons) (sediment) 13 2019
Acres
Nonpoint Source
PCBs (Polychlorinated biphenyls) (tissue) 13 2019
Acres
Nonpoint Source
Sediment Toxicity 13 2019
Acres
Nonpoint Source
Page 12 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Zinc (sediment) 13 2019
Acres
Nonpoint Source
Compton Creek4 R 40515010Coliform Bacteria 8.5 2009
Miles
Nonpoint/Point Source
Trash 8.5 2019
Miles
Source Unknown
Coyote Creek4 R 40515010Coliform Bacteria 13 2019
Miles
Nonpoint/Point Source
Copper, Dissolved 13 2006
Miles
Nonpoint Source
Diazinon 13 2019
Miles
Source Unknown
Lead 13 2007This listing was made by USEPA for 2006.
Miles
Source Unknown
pH 13 2019
Miles
Source Unknown
Toxicity 13 2008This listing was made by USEPA for 2002.
Miles
Point Source
Zinc 13 2007This listing was made by USEPA for 2006.
Miles
Source Unknown
Crystal Lake4 L 40543000Organic Enrichment/Low Dissolved Oxygen 3.7 2019Acres
Nonpoint Source
Page 13 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Dominguez Channel (lined portion above Vermont Ave)
4 R 40351000
Ammonia 6.7 2019
Miles
Nonpoint/Point Source
Copper 6.7 2019
Miles
Nonpoint/Point Source
Dieldrin (tissue) 6.7 2019
Miles
Nonpoint/Point Source
Indicator bacteria 6.7 2007
Miles
Nonpoint/Point Source
Lead (tissue) 6.7 2019
Miles
Nonpoint/Point Source
Sediment Toxicity 6.7 2019
Miles
Source Unknown
Zinc (sediment) 6.7 2019
Miles
Nonpoint/Point Source
Dominguez Channel Estuary (unlined portion below Vermont Ave)
4 E 40512000
Ammonia 140 2019
Acres
Nonpoint/Point Source
Benthic Community Effects 140 2019
Acres
Nonpoint/Point Source
Benzo(a)pyrene (PAHs) 140 2019
Acres
Source Unknown
Benzo[a]anthracene 140 2019
Acres
Source Unknown
Page 14 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Chlordane (tissue) 140 2019
Acres
Nonpoint/Point Source
Chrysene (C1-C4) 140 2019
Acres
Source Unknown
Coliform Bacteria 140 2007
Acres
Nonpoint/Point Source
DDT (tissue & sediment) 140 2019
Acres
Nonpoint/Point Source
Dieldrin (tissue) 140 2019
Acres
Nonpoint/Point Source
Lead (tissue) 140 2019
Acres
Nonpoint/Point Source
PCBs (Polychlorinated biphenyls) 140 2019
Acres
Source Unknown
Phenanthrene 140 2019
Acres
Source Unknown
Pyrene 140 2019
Acres
Source Unknown
Zinc (sediment) 140 2019
Acres
Nonpoint/Point Source
Dry Canyon Creek4 R 40521000Fecal Coliform 3.9 2009
Miles
Urban Runoff/Storm Sewers
Natural Sources
Page 15 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Echo Park Lake4 L 40515010Algae 13 2019
Acres
Nonpoint Source
Ammonia 13 2019
Acres
Nonpoint Source
Copper 13 2019
Acres
Nonpoint Source
Eutrophic 13 2019
Acres
Nonpoint Source
Lead 13 2019
Acres
Nonpoint Source
Odor 13 2019
Acres
Nonpoint Source
PCBs (Polychlorinated biphenyls) (tissue) 13 2019
Acres
Nonpoint Source
pH 13 2019
Acres
Nonpoint Source
Trash 13 2007
Acres
Source Unknown
El Dorado Lakes4 L 40515010Algae 35 2019Acres
Nonpoint Source
Ammonia 35 2019Acres
Nonpoint Source
Copper 35 2019Acres
Nonpoint Source
Page 16 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Eutrophic 35 2019Acres
Nonpoint Source
Lead 35 2019Acres
Nonpoint Source
Mercury (tissue) 35 2019Acres
Nonpoint Source
pH 35 2019Acres
Nonpoint Source
Elizabeth Lake4 L 40351000Eutrophic 123 2019Acres
Nonpoint Source
Organic Enrichment/Low Dissolved Oxygen 123 2019Acres
Nonpoint Source
pH 123 2019Acres
Nonpoint Source
Trash 123 2019Acres
Nonpoint Source
Escondido Beach4 C 40434000DDT 1.2 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.2 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Flat Rock Point Beach Area4 C 40511000DDT 0.11 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.11 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Page 17 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Fox Barranca (tributary to Calleguas Creek Reach 6)
4 R 40362000
Boron 6.7 2019
Miles
Nonpoint Source
Sulfates 6.7 2019
Miles
Nonpoint Source
Total Dissolved Solids 6.7 2019
Miles
Nonpoint Source
Hobie Beach (Channel Islands Harbor)4 C 40311000Indicator bacteria 0.06 2019Miles
Nonpoint/Point Source
Hopper Creek4 R 40341000Sulfates 13 2019Miles
Nonpoint/Point Source
Total Dissolved Solids 13 2019Miles
Nonpoint/Point Source
Inspiration Point Beach4 C 40511000DDT 0.14 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.14 2019Fish Consumption Advisroy for PCBs.
Miles
Nonpoint Source
La Costa Beach4 C 40416000DDT 0.74 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.74 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Page 18 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Lake Calabasas4 L 40521000Ammonia 18 2006Acres
Nonpoint Source
DDT (tissue) 18 2019Acres
Nonpoint Source
Eutrophic 18 2019Acres
Nonpoint Source
Odor 18 2019Acres
Nonpoint Source
Organic Enrichment/Low Dissolved Oxygen 18 2019Acres
Nonpoint Source
pH 18 2019Acres
Nonpoint Source
Lake Hughes4 L 40351000Algae 21 2019Acres
Nonpoint Source
Eutrophic 21 2019Acres
Nonpoint Source
Fish Kills 21 2019Acres
Nonpoint Source
Odor 21 2019Acres
Nonpoint Source
Trash 21 2019Acres
Nonpoint Source
Lake Lindero4 L 40423000Algae 15 2006
Acres
Nonpoint Source
Chloride 15 2019
Acres
Nonpoint Source
Eutrophic 15 2006
Acres
Nonpoint Source
Page 19 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Odor 15 2006
Acres
Nonpoint Source
Selenium 15 2019
Acres
Source Unknown
Specific Conductivity 15 2019
Acres
Nonpoint Source
Trash 15 2019
Acres
Nonpoint Source
Lake Sherwood4 L 40426000Algae 135 2006Acres
Nonpoint Source
Ammonia 135 2006Acres
Nonpoint Source
Eutrophic 135 2006Acres
Nonpoint Source
Mercury (tissue) 135 2019Acres
Nonpoint Source
Organic Enrichment/Low Dissolved Oxygen 135 2006Acres
Nonpoint Source
Las Flores Beach4 C 40415000DDT 1.1 2019
Fish Consumption Advisory for DDT.
Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.1 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Las Tunas Beach4 C 40412000DDT 1.2 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
Page 20 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
PCBs (Polychlorinated biphenyls) 1.2 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Las Virgenes Creek4 R 40422010Nutrients (Algae) 12 2006
Miles
Nonpoint Source
Organic Enrichment/Low Dissolved Oxygen 12 2006
Miles
Nonpoint Source
Scum/Foam-unnatural 12 2006
Miles
Nonpoint Source
Sedimentation/Siltation 12 2019
Miles
Source Unknown
Selenium 12 2019
Miles
Nonpoint Source
Trash 12 2019
Miles
Nonpoint Source
Legg Lake4 L 40531000Ammonia 25 2019Acres
Nonpoint Source
Copper 25 2019Acres
Nonpoint Source
Lead 25 2019Acres
Nonpoint Source
Odor 25 2019Acres
Nonpoint Source
pH 25 2019Acres
Nonpoint Source
Trash 25 2019Acres
Nonpoint Source
Page 21 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Lincoln Park Lake4 L 40515010Ammonia 3.8 2019
Acres
Nonpoint Source
Eutrophic 3.8 2019
Acres
Nonpoint Source
Lead 3.8 2019
Acres
Nonpoint Source
Odor 3.8 2019
Acres
Nonpoint Source
Organic Enrichment/Low Dissolved Oxygen 3.8 2019
Acres
Nonpoint Source
Trash 3.8 2007
Acres
Source Unknown
Lindero Creek Reach 14 R 40423000Algae 3 2006
Miles
Nonpoint Source
Scum/Foam-unnatural 3 2006
Miles
Nonpoint Source
Selenium 3 2019
Miles
Nonpoint Source
Trash 3 2019
Miles
Nonpoint Source
Lindero Creek Reach 2 (Above Lake)4 R 40425000Algae 4.5 2006
Miles
Nonpoint Source
Page 22 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Scum/Foam-unnatural 4.5 2006
Miles
Nonpoint Source
Selenium 4.5 2019
Miles
Nonpoint Source
Trash 4.5 2019
Miles
Nonpoint Source
Long Beach City Beach4 C 40512000Indicator bacteria 4.7 2019
This listing was made by USEPA for 2006. This listing includes the beach area at 3rd Place, 5th, 10th, 16th, 36th, 54th, 55th, 62nd, and 72nd Streets, Coronado Ave., Granada Ave., Molina Ave., and Prospect Ave..
Miles
Source Unknown
Long Point Beach4 C 40511000DDT 0.7 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.7 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Los Angeles Harbor - Cabrillo Marina4 B 40512000DDT 77 2019
Acres
Source Unknown
PCBs (Polychlorinated biphenyls) 77 2019
Acres
Source Unknown
Los Angeles Harbor - Consolidated Slip4 B 405120002-Methylnaphthalene 36 2008
This listing was made by USEPA for 2006.Acres
Source Unknown
Benthic Community Effects 36 2019
Acres
Nonpoint Source
Page 23 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Benzo(a)pyrene (PAHs) 36 2008This listing was made by USEPA for 2006.
Acres
Source Unknown
Benzo[a]anthracene 36 2008This listing was made by USEPA for 2006.
Acres
Source Unknown
Cadmium (sediment) 36 2019Historical use of pesticides and lubricants, stormwater runoff, aerial deposition, and historical discharges for metals.
Acres
Nonpoint Source
Chlordane (tissue & sediment) 36 2019
Acres
Nonpoint Source
Chromium (sediment) 36 2019
Acres
Nonpoint Source
Chrysene (C1-C4) 36 2008This listing was made by USEPA for 2006.
Acres
Source Unknown
Copper (sediment) 36 2019
Acres
Nonpoint Source
DDT (tissue & sediment) 36 2019Fish Consumption Advisory for DDT.
Acres
Nonpoint Source
Dieldrin 36 2008
Acres
Nonpoint Source
Lead (sediment) 36 2019
Acres
Nonpoint Source
Mercury (sediment) 36 2019Historical use of pesticides and lubricants, stormwater runoff, aerial deposition, and historical discharges for metals.
Acres
Nonpoint Source
PCBs (Polychlorinated biphenyls) (tissue & sediment) 36 2019Fish Consumption Advisory for PCBs.
Acres
Nonpoint Source
Page 24 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Phenanthrene 36 2008This listing was made by USEPA for 2006.
Acres
Source Unknown
Pyrene 36 2008This listing was made by USEPA for 2006.
Acres
Source Unknown
Sediment Toxicity 36 2019
Acres
Nonpoint Source
Toxaphene (tissue) 36 2019
Acres
Nonpoint Source
Zinc (sediment) 36 2019Historical use of pesticides and lubricants, stormwater runoff, aerial deposition, and historical discharges for metals.
Acres
Nonpoint Source
Los Angeles Harbor - Fish Harbor4 B 40518000Benzo(a)pyrene (PAHs) 91 2008
This listing was made by USEPA for 2006.Acres
Source Unknown
Benzo[a]anthracene 91 2019
Acres
Source Unknown
Chlordane 91 2019
Acres
Source Unknown
Chrysene (C1-C4) 91 2019
Acres
Source Unknown
Copper 91 2019
Acres
Source Unknown
DDT 91 2019
Acres
Nonpoint Source
Dibenz[a,h]anthracene 91 2019
Acres
Source Unknown
Page 25 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Lead 91 2019
Acres
Source Unknown
Mercury 91 2019
Acres
Source Unknown
PAHs (Polycyclic Aromatic Hydrocarbons) 91 2019
Acres
Nonpoint Source
PCBs (Polychlorinated biphenyls) 91 2019
Acres
Nonpoint Source
Phenanthrene 91 2019
Acres
Source Unknown
Pyrene 91 2019
Acres
Source Unknown
Sediment Toxicity 91 2019
Acres
Source Unknown
Zinc 91 2019
Acres
Source Unknown
Los Angeles Harbor - Inner Cabrillo Beach Area
4 B 40512000
Copper 82 2019
Acres
Source Unknown
DDT 82 2019Fish Consumption Advisory for DDT.
Acres
Nonpoint Source
PCBs (Polychlorinated biphenyls) 82 2019Fish Consumption Advisory for PCBs.
Acres
Nonpoint Source
Page 26 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Los Angeles River Estuary (Queensway Bay)
4 E 40512000
Chlordane (sediment) 207 2019Historical use of pesticides and lubricants.
Acres
Nonpoint Source
DDT (sediment) 207 2019Historical use of pesticides and lubricants.
Acres
Nonpoint Source
Lead (sediment) 207 2019Historical use of pesticides and lubricants.
Acres
Nonpoint Source
PCBs (Polychlorinated biphenyls) (sediment) 207 2019Historical use of pesticides and lubricants.
Acres
Nonpoint Source
Sediment Toxicity 207 2019
Acres
Source Unknown
Trash 207 2007
Acres
Source Unknown
Zinc (sediment) 207 2019Historical use of pesticides and lubricants.
Acres
Nonpoint Source
Los Angeles River Reach 1 (Estuary to Carson Street)
4 R 40512000
Coliform Bacteria 3.4 2009
Miles
Nonpoint/Point Source
Cyanide 3.4 2019
Miles
Source Unknown
Diazinon 3.4 2019
Miles
Source Unknown
Trash 3.4 2007
Miles
Nonpoint/Point Source
Page 27 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Los Angeles River Reach 2 (Carson to Figueroa Street)
4 R 40515010
Coliform Bacteria 19 2009
Miles
Nonpoint/Point Source
Oil 19 2019
Miles
Nonpoint Source
Trash 19 2007
Miles
Nonpoint/Point Source
Los Angeles River Reach 3 (Figueroa St. to Riverside Dr.)
4 R 40521000
Trash 7.9 2007
Miles
Source Unknown
Los Angeles River Reach 4 (Sepulveda Dr. to Sepulveda Dam)
4 R 40521000
Coliform Bacteria 11 2009
Miles
Nonpoint/Point Source
Trash 11 2007
Miles
Source Unknown
Los Angeles River Reach 5 ( within Sepulveda Basin)
4 R 40521000
Oil 1.9 2019
Miles
Nonpoint/Point Source
Trash 1.9 2007
Miles
Nonpoint/Point Source
Los Angeles River Reach 6 (Above Sepulveda Flood Control Basin)
4 R 40521000
1,1-Dichloroethane (1,1-DCE)/Vinylidene chloride 7 2019
Miles
Nonpoint Source
Page 28 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Coliform Bacteria 7 2009
Miles
Nonpoint Source
Tetrachloroethylene/PCE 7 2019
Miles
Nonpoint Source
Trichloroethylene/TCE 7 2019
Miles
Nonpoint Source
Los Angeles/Long Beach Inner Harbor4 B 40518000Beach Closures 3003 2004
Acres
Nonpoint/Point Source
Benthic Community Effects 3003 2019
Acres
Nonpoint Source
Copper 3003 2008This listing was made by USEPA for 2006.
Acres
Source Unknown
DDT 3003 2019Acres
Nonpoint/Point Source
PCBs (Polychlorinated biphenyls) 3003 2019Acres
Nonpoint/Point Source
Sediment Toxicity 3003 2019Acres
Nonpoint/Point Source
Zinc 3003 2008This listing was made by USEPA for 2006.
Acres
Source Unknown
Los Angeles/Long Beach Outer Harbor (inside breakwater)
4 B 40512000
DDT 4042 2019
Acres
Nonpoint Source
PCBs (Polychlorinated biphenyls) 4042 2019
Acres
Nonpoint Source
Page 29 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Sediment Toxicity 4042 2008This listing was made by USEPA for 2006.
Acres
Source Unknown
Los Cerritos Channel4 T 40515010Ammonia 31 2019
Acres
Nonpoint Source
Bis(2ethylhexyl)phthalate/DEHP 31 2019
Acres
Source Unknown
Chlordane (sediment) 31 2019
Acres
Source Unknown
Coliform Bacteria 31 2019
Acres
Nonpoint Source
Copper 31 2019
Acres
Nonpoint Source
Lead 31 2019
Acres
Nonpoint Source
Trash 31 2019
Acres
Source Unknown
Zinc 31 2019
Acres
Nonpoint Source
Machado Lake (Harbor Park Lake)4 L 40512000Algae 45 2019Acres
Nonpoint Source
Ammonia 45 2019Acres
Nonpoint Source
ChemA (tissue) 45 2019Historical use of pesticides and lubricants.
Acres
Nonpoint Source
Page 30 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Chlordane (tissue) 45 2019Fish Consumption Advisory.
Acres
Nonpoint Source
DDT (tissue) 45 2019Fish Consumption Advisory.
Acres
Nonpoint Source
Dieldrin (tissue) 45 2019Acres
Nonpoint Source
Eutrophic 45 2019Acres
Nonpoint Source
Odor 45 2019Acres
Nonpoint Source
PCBs (Polychlorinated biphenyls) (tissue) 45 2019Acres
Nonpoint Source
Trash 45 2019Acres
Nonpoint Source
Malaga Cove Beach4 C 40511000DDT 0.39 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.39 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Malibou Lake4 L 40424000Algae 40 2006Acres
Nonpoint Source
Eutrophic 40 2006Acres
Nonpoint Source
Organic Enrichment/Low Dissolved Oxygen 40 2006Acres
Nonpoint Source
Malibu Beach4 C 40421000DDT 0.77 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
Page 31 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Malibu Creek4 R 40421000Fish Barriers (Fish Passage) 11 2019
Miles
Dam Construction
Nutrients (Algae) 11 2006
Miles
Nonpoint/Point Source
Scum/Foam-unnatural 11 2006
Miles
Nonpoint/Point Source
Sedimentation/Siltation 11 2019
Miles
Source Unknown
Selenium 11 2019
Miles
Source Unknown
Sulfates 11 2019
Miles
Source Unknown
Trash 11 2019
Miles
Nonpoint Source
Malibu Lagoon4 E 40421000Benthic Community Effects 15 2019
Acres
Nonpoint/Point Source
Eutrophic 15 2006
Acres
Nonpoint/Point Source
pH 15 2006Possible sources might be septic systems, storm drains, and birds.
Acres
Source Unknown
Shellfish Harvesting Advisory 15 2005
Acres
Nonpoint/Point Source
Page 32 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Swimming Restrictions 15 2005
Acres
Nonpoint/Point Source
Viruses (enteric) 15 2005
Acres
Nonpoint/Point Source
Malibu Lagoon Beach (Surfrider)4 C 40421000DDT 1 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Marina del Rey Harbor - Back Basins4 B 40517000DDT (tissue) 391 2005
For 2006, DDT (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Acres
Nonpoint Source
Dieldrin (tissue) 391 2005For 2006, dieldrin (tissue) was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Acres
Nonpoint Source
Matilija Creek Reach 1 (Jct. With N. Fork to Reservoir)
4 R 40220012
Fish Barriers (Fish Passage) 0.63 2019Miles
Dam Construction
Matilija Creek Reach 2 (Above Reservoir)4 R 40220010Fish Barriers (Fish Passage) 15 2019Miles
Dam Construction
Matilija Reservoir4 L 40220012Fish Barriers (Fish Passage) 121 2019Acres
Dam Construction
McCoy Canyon Creek4 R 40521000Fecal Coliform 4 2009
Miles
Nonpoint Source
Page 33 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Nitrate 4 2019
Miles
Nonpoint Source
Nitrogen, Nitrate 4 2019
Miles
Urban Runoff/Storm Sewers
Natural Sources
McGrath Lake4 L 40311000Chlordane (sediment) 20 2019Acres
Nonpoint Source
DDT (sediment) 20 2019Acres
Nonpoint Source
Dieldrin (sediment) 20 2019Historical use of pesticides and lubricants, storm water runoff/aerial deposition from agricultural fields.
Acres
Nonpoint Source
Fecal Coliform 20 2019Acres
Agriculture
Landfills
Natural Sources
PCBs (Polychlorinated biphenyls) (sediment) 20 2019Historical use of pesticides and lubricants, storm water runoff/aerial deposition from agricultural fields.
Acres
Nonpoint Source
Sediment Toxicity 20 2019Acres
Nonpoint Source
Medea Creek Reach 1 (Lake to Confl. with Lindero)
4 R 40424000
Algae 2.6 2006
Miles
Nonpoint Source
Sedimentation/Siltation 2.6 2019
Miles
Source Unknown
Selenium 2.6 2019
Miles
Nonpoint Source
Page 34 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Trash 2.6 2019
Miles
Nonpoint Source
Medea Creek Reach 2 (Abv Confl. with Lindero)
4 R 40423000
Algae 5.4 2006
Miles
Nonpoint Source
Sedimentation/Siltation 5.4 2019
Miles
Source Unknown
Selenium 5.4 2019
Miles
Nonpoint Source
Trash 5.4 2019
Miles
Nonpoint Source
Mint Canyon Creek Reach 1 (Confl to Rowler Cyn)
4 R 40351000
Nitrate and Nitrite 8.1 2004
Miles
Nonpoint Source
Munz Lake4 L 40351000Eutrophic 6.6 2019Acres
Nonpoint Source
Trash 6.6 2019Acres
Nonpoint Source
Nicholas Canyon Beach4 C 40444000DDT 1.7 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.7 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Page 35 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Ormond Beach4 C 40311000Indicator bacteria 1.6 2008
This listing was made by USEPA for 2006. This listing includes the area of Ormond Beach at J St., Oxnard Drain, and Arnold Rd.
Miles
Source Unknown
Palo Verde Shoreline Park Beach4 C 40511000Pesticides 0.24 2019
Miles
Source Unknown
Paradise Cove Beach4 C 40435000DDT 1.7 2019
Fish consumption advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.7 2019Fish consumption advisory for PCBs.
Miles
Nonpoint Source
Peck Road Park Lake4 L 40531000Chlordane (tissue) 103 2019
Acres
Nonpoint Source
DDT (tissue) 103 2019
Acres
Nonpoint Source
Lead 103 2019
Acres
Nonpoint Source
Odor 103 2019
Acres
Nonpoint Source
Organic Enrichment/Low Dissolved Oxygen 103 2019
Acres
Nonpoint Source
Trash 103 2007
Acres
Nonpoint Source
Page 36 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Peninsula Beach4 C 40311000Indicator bacteria 0.2 2003
Area affected is beach area north of South Jetty.Miles
Nonpoint/Point Source
Piru Creek (from gaging station below Santa Felicia Dam to headwaters)
4 R 40342000
Chloride 67 2019
Miles
Source Unknown
pH 67 2019
Miles
Nonpoint Source
Conservation Discharge Releases
Point Dume Beach4 C 40435000DDT 2.5 2019
Fish consumption advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 2.5 2019Fish consumtiion advisory for PCBs.
Miles
Nonpoint Source
Point Fermin Park Beach4 C 40512000DDT 1.6 2019
Fish consumption advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.6 2019Fish consumption advisory for PCBs.
Miles
Nonpoint Source
Pole Creek (trib to Santa Clara River Reach 3 )
4 R 40331000
Sulfates 9 2019Miles
Nonpoint Source
Total Dissolved Solids 9 2019Miles
Nonpoint Source
Port Hueneme Harbor (Back Basins)4 B 40311000DDT (tissue) 65 2019Acres
Nonpoint Source
Page 37 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
PCBs (Polychlorinated biphenyls) (tissue) 65 2019Acres
Nonpoint Source
Port Hueneme Pier4 C 40311000PCBs (Polychlorinated biphenyls) 0.33 2019
Miles
Source Unknown
Portuguese Bend Beach4 C 40511000DDT 1.4 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.4 2019Fish Consumption Advisory for PCB.
Miles
Nonpoint Source
Puddingstone Reservoir4 L 40552000Chlordane (tissue) 243 2019Acres
Nonpoint Source
DDT (tissue) 243 2019Acres
Nonpoint Source
Mercury (tissue) 243 2019Acres
Nonpoint Source
Organic Enrichment/Low Dissolved Oxygen 243 2019Acres
Nonpoint Source
PCBs (Polychlorinated biphenyls) (tissue) 243 2019Acres
Nonpoint Source
Puerco Beach4 C 40431000DDT 0.5 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.5 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Redondo Beach4 C 40512000DDT 1.5 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
Page 38 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
PCBs (Polychlorinated biphenyls) 1.5 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Rincon Beach4 C 40100010Indicator bacteria 0.09 2003
Area affected is 50 and 150 yards south of mouth of Rincon Creek, and at the end of the footpath.
Miles
Nonpoint/Point Source
Rio De Santa Clara/Oxnard Drain No. 34 R 40311000ChemA (tissue) 1.9 2019Miles
Nonpoint Source
Chlordane (tissue) 1.9 2019Miles
Nonpoint Source
DDT (tissue) 1.9 2019Miles
Nonpoint Source
Nitrogen 1.9 2019Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) (tissue) 1.9 2019Miles
Nonpoint Source
Sediment Toxicity 1.9 2019Miles
Nonpoint Source
Toxaphene (tissue) 1.9 2019Miles
Nonpoint Source
Rio Hondo Reach 1 (Confl. LA River to Snt Ana Fwy)
4 R 40515010
Coliform Bacteria 4.6 2009
Miles
Nonpoint/Point Source
Trash 4.6 2007
Miles
Nonpoint/Point Source
Rio Hondo Reach 2 (At Spreading Grounds)4 R 40515010Coliform Bacteria 4.9 2009
Miles
Nonpoint/Point Source
Page 39 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Robert H. Meyer Memorial Beach4 C 40441000Beach Closures 1.2 2019
Miles
Nonpoint Source
DDT 1.2 2019Fish Consumption Advisory for DDT.
Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.2 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Royal Palms Beach4 C 40511000DDT 1.1 2019
Fish consumption advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.1 2019Fish consumption advisory for PCBs.
Miles
Nonpoint Source
San Antonio Creek (Tributary to Ventura River Reach 4)
4 R 40220023
Nitrogen 9.8 2019Miles
Nonpoint Source
San Buenaventura Beach4 C 40210000Indicator bacteria 1.8 2008
This listing was made by USEPA for 2006. This listing includes the area of San Buenaventura Beach at Kalorama, San Jon Rd, Dover Lane, and Weymouth drains.
Miles
Source Unknown
San Gabriel River Estuary4 R 40516000Copper 3.4 2007
This listing was made by USEPA for 2006.Miles
Source Unknown
San Gabriel River Reach 1 (Estuary to Firestone)
4 R 40515010
Coliform Bacteria 6.4 2019
Miles
Nonpoint/Point Source
Page 40 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
pH 6.4 2019
Miles
Source Unknown
San Gabriel River Reach 2 (Firestone to Whittier Narrows Dam
4 R 40515010
Coliform Bacteria 12 2019
Miles
Nonpoint/Point Source
Lead 12 2019
Miles
Nonpoint/Point Source
San Jose Creek Reach 1 (SG Confluence to Temple St.)
4 R 40531000
Coliform Bacteria 2.7 2019
Miles
Nonpoint/Point Source
Selenium 2.7 2007This listing was made by USEPA for 2006.
Miles
Source Unknown
Toxicity 2.7 2007This listing was made by USEPA for 2006.
Miles
Source Unknown
San Jose Creek Reach 2 (Temple to I-10 at White Ave.)
4 R 40531000
Coliform Bacteria 17 2019
Miles
Nonpoint/Point Source
San Pedro Bay Near/Off Shore Zones4 B 40512000Chlordane 8173 2019
Acres
Source Unknown
Chromium (sediment) 8173 2019
Acres
Nonpoint/Point Source
Copper (sediment) 8173 2019
Acres
Nonpoint/Point Source
Page 41 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
DDT (tissue & sediment) 8173 2019Fish Consumption Advisory for DDT.
Acres
Nonpoint/Point Source
PAHs (Polycyclic Aromatic Hydrocarbons) (sediment) 8173 2019
Acres
Nonpoint/Point Source
PCBs (Polychlorinated biphenyls) 8173 2019Fish consumption advisory for PCBs.
Acres
Nonpoint/Point Source
Sediment Toxicity 8173 2019
Acres
Nonpoint/Point Source
Zinc (sediment) 8173 2019
Acres
Nonpoint/Point Source
Santa Clara River Estuary4 E 40311000ChemA 49 2019Acres
Source Unknown
Coliform Bacteria 49 2019Acres
Nonpoint Source
Toxaphene 49 2019Acres
Nonpoint Source
Santa Clara River Reach 1 (Estuary to Hwy 101 Bridge)
4 R 40311000
Toxicity 10 2019
Miles
Source Unknown
Santa Clara River Reach 3 (Freeman Diversion to A Street)
4 R 40331000
Total Dissolved Solids 31 2019
Miles
Nonpoint/Point Source
Page 42 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
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)
4 R 40351000
Coliform Bacteria 9.4 2019
Miles
Nonpoint/Point Source
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)
4 R 40351000
Chlorpyrifos 5.2 2019
Miles
Source Unknown
Coliform Bacteria 5.2 2019
Miles
Nonpoint/Point Source
Diazinon 5.2 2019
Miles
Source Unknown
Toxicity 5.2 2019
Miles
Source Unknown
Santa Clara River Reach 7 ( Bouquet Canyon Rd to above Lang Gaging Station) (was named Santa Clara River Reach 9 on 2002 303(d) list)
4 R 40351000
Coliform Bacteria 21 2019
Miles
Nonpoint/Point Source
Santa Clara River Reach 11 (Piru Creek, from confluence with Santa Clara River Reach 4 to gaging station below Santa Felicia Dam)
4 R 40341000
Boron 6.2 2019
Miles
Source Unknown
Sulfates 6.2 2019
Miles
Source Unknown
Page 43 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Santa Fe Dam Park Lake4 L 40531000Copper 20 2019Acres
Nonpoint Source
Lead 20 2019Acres
Nonpoint Source
pH 20 2019Acres
Nonpoint Source
Santa Monica Bay Offshore/Nearshore4 B 40513000DDT (tissue & sediment) 146645 2019
Centered on Palos Verdes Shelf.Acres
Nonpoint/Point Source
Debris 146645 2019
Acres
Nonpoint/Point Source
Fish Consumption Advisory 146645 2019
Acres
Nonpoint/Point Source
PCBs (Polychlorinated biphenyls) (tissue & sediment) 146645 2019
Acres
Nonpoint/Point Source
Sediment Toxicity 146645 2019
Acres
Nonpoint/Point Source
Santa Monica Canyon4 R 40513000Lead 2.7 2019
Miles
Nonpoint Source
Sawpit Creek4 R 40531000Bis(2ethylhexyl)phthalate/DEHP 3.9 2019
Miles
Source Unknown
Fecal Coliform 3.9 2019
Miles
Source Unknown
Page 44 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Sea Level Beach4 C 40441000DDT 0.21 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 0.21 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Sepulveda Canyon4 R 405.13Ammonia 0.83 2019
Miles
Nonpoint Source
Sespe Creek (from 500 ft below confluence with Little Sespe Cr to headwaters)
4 R 40332020
Chloride 54 2019
Miles
Nonpoint Source
pH 54 2019
Miles
Nonpoint Source
Topanga Beach4 C 40413000DDT 2.5 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 2.5 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Topanga Canyon Creek4 R 40411000Lead 8.6 2019Miles
Nonpoint Source
Torrance Carson Channel4 R 40512000Coliform Bacteria 3.4 2007Miles
Nonpoint Source
Copper 3.4 2019Miles
Nonpoint Source
Page 45 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Lead 3.4 2019Miles
Nonpoint Source
Trancas Beach (Broad Beach)4 C 40437000DDT 1.7 2019
Fish Consumption Advisory for DDT.
Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.7 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Triunfo Canyon Creek Reach 14 R 40424000Lead 2.5 2019Miles
Nonpoint Source
Mercury 2.5 2019Miles
Nonpoint Source
Sedimentation/Siltation 2.5 2019Miles
Source Unknown
Triunfo Canyon Creek Reach 24 R 40424000Lead 3.3 2019Miles
Nonpoint Source
Mercury 3.3 2019Miles
Nonpoint Source
Sedimentation/Siltation 3.3 2019Miles
Source Unknown
Tujunga Wash (LA River to Hansen Dam)4 R 40521000Coliform Bacteria 9.7 2009
Miles
Nonpoint Source
Trash 9.7 2007
Miles
Nonpoint Source
Ventura Harbor: Ventura Keys4 B 40311000Coliform Bacteria 179 2019Acres
Nonpoint Source
Page 46 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Ventura Marina Jetties4 C 40311000DDT 0.69 2019
Miles
Source Unknown
PCBs (Polychlorinated biphenyls) 0.69 2019
Miles
Source Unknown
Ventura River Estuary4 R 40210011Algae 0.2 2019Miles
Nonpoint/Point Source
Eutrophic 0.2 2019Miles
Nonpoint/Point Source
Total Coliform 0.2 2019Stables and horse property may be the sources.
Miles
Nonpoint Source
Trash 0.2 2019Miles
Nonpoint/Point Source
Ventura River Reach 1 and 2 (Estuary to Weldon Canyon)
4 R 40210011
Algae 4.5 2019Miles
Nonpoint/Point Source
Ventura River Reach 3 (Weldon Canyon to Confl. w/ Coyote Cr)
4 R 40210011
Pumping 2.8 2019Miles
Nonpoint Source
Water Diversion 2.8 2019Miles
Nonpoint Source
Ventura River Reach 4 (Coyote Creek to Camino Cielo Rd)
4 R 40220021
Pumping 19 2019Miles
Nonpoint Source
Water Diversion 19 2019Miles
Nonpoint Source
Page 47 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Verdugo Wash Reach 1 (LA River to Verdugo Rd.)
4 R 40521000
Coliform Bacteria 2 2009
Miles
Nonpoint Source
Trash 2 2007
Miles
Nonpoint Source
Verdugo Wash Reach 2 (Above Verdugo Road)
4 R 40524000
Coliform Bacteria 7.6 2009
Miles
Nonpoint Source
Trash 7.6 2007
Miles
Nonpoint Source
Walnut Creek Wash (Drains from Puddingstone Res)
4 R 40531000
pH 12 2007
Miles
Nonpoint/Point Source
Toxicity 12 2007USEPA deferred action on this listing until 2008.
Miles
Nonpoint/Point Source
Westlake Lake4 L 40425000Algae 119 2006Acres
Nonpoint Source
Ammonia 119 2006Acres
Nonpoint Source
Eutrophic 119 2006Acres
Nonpoint Source
Lead 119 2019Acres
Nonpoint Source
Organic Enrichment/Low Dissolved Oxygen 119 2006Acres
Nonpoint Source
Page 48 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
Wheeler Canyon/Todd Barranca4 R 40321000Sulfates 10 2019
Miles
Nonpoint Source
Total Dissolved Solids 10 2019
Miles
Nonpoint Source
Whites Point Beach4 C 40511000DDT 1.1 2019
Fish Consumption Advisory for DDT.Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.1 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Wilmington Drain4 R 40342000Ammonia 0.56 2019Miles
Nonpoint Source
Coliform Bacteria 0.56 2007Miles
Nonpoint Source
Copper 0.56 2019Miles
Nonpoint Source
Lead 0.56 2019Miles
Nonpoint Source
Zuma Beach (Westward Beach)4 C 40436000DDT 1.6 2019
Fish Consumption Advisory for DDT.
Miles
Nonpoint Source
PCBs (Polychlorinated biphenyls) 1.6 2019Fish Consumption Advisory for PCBs.
Miles
Nonpoint Source
Page 49 of 50
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
LOS ANGELES REGIONAL WATER QUALITY CONTROL BOARD
"Calwater Watershed" is the State Water Resources Control Board hydrological subunit area or an even smaller area delineation.CALWATER WATERSHED
ABBREVIATIONS
GROUP A PESTICIDES OR CHEM A
aldrin, dieldrin, chlordane, endrin, heptachlor, heptachlor epoxide, hexachlorocyclohexane (including lindane), endosulfan, and toxaphene
WATER BODY TYPE
B = Bays and HarborsC = Coastal Shorelines/BeachesE = EstuariesL = Lakes/ReserviorsR = Rivers and StreamsS = Saline LakesT = Wetlands, TidalW= Wetlands, Freshwater
REGIONAL WATER QUALITY CONTROL BOARDS
1 North Coast2 San Francisco Bay3 Central Coast4 Los Angeles5 Central Valley6 Lahontan7 Colorado River Basin8 Santa Ana9 San Diego
Page 50 of 50
Regulatory_Issues_Trends.doc
Attachment A-3 Santa Ana RWQCB Basin Plan 303(d) List
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SANTA ANA REGIONAL WATER QUALITY CONTROL BOARD
Anaheim Bay8 B 80111000Dieldrin (tissue) 402 2019
This listing was made by USEPA.Acres
Source Unknown
Nickel 402 2019This listing was made by USEPA.
Acres
Source Unknown
PCBs (Polychlorinated biphenyls) (tissue) 402 2019This listing was made by USEPA.
Acres
Source Unknown
Sediment Toxicity 402 2019
Acres
Source Unknown
Balboa Beach8 C 80114000DDT 1.8 2019
Miles
Source Unknown
Dieldrin 1.8 2019
Miles
Source Unknown
PCBs (Polychlorinated biphenyls) 1.8 2019
Miles
Source Unknown
Big Bear Lake8 L 80171000Copper 2865 2007
Acres
Resource Extraction
Mercury 2865 2007
Acres
Resource Extraction
Metals 2865 2007
Acres
Resource Extraction
Noxious aquatic plants 2865 2006
Acres
Construction/Land Development
Unknown point source
Page 1 of 9
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SANTA ANA REGIONAL WATER QUALITY CONTROL BOARD
Nutrients 2865 2006
Acres
Construction/Land Development
Snow skiing activities
PCBs (Polychlorinated biphenyls) 2865 2019
Acres
Source Unknown
Sedimentation/Siltation 2865 2006
Acres
Construction/Land Development
Snow skiing activities
Unknown Nonpoint Source
Bolsa Chica State Beach8 C 80111000Copper 2.6 2019
This listing was made by USEPA.Miles
Source Unknown
Nickel 2.6 2019This listing was made by USEPA.
Miles
Source Unknown
Buck Gully Creek8 R 80111000Fecal Coliform 0.3 2019
Listing is downstream of Pacific Coast Highway.Miles
Source Unknown
Total Coliform 0.3 2019Listing is downstream of Pacific Coast Highway.
Miles
Source Unknown
Canyon Lake (Railroad Canyon Reservoir)8 L 80211000Pathogens 453 2006
Acres
Nonpoint Source
Chino Creek Reach 18 R 80121000Nutrients 7.8 2019
Miles
Agriculture
Dairies
Page 2 of 9
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SANTA ANA REGIONAL WATER QUALITY CONTROL BOARD
Elsinore, Lake8 L 80231000PCBs (Polychlorinated biphenyls) 2431 2019
Acres
Source Unknown
Unknown Toxicity 2431 2007
Acres
Unknown Nonpoint Source
Fulmor, Lake8 L 80221000Pathogens 4.2 2019Acres
Unknown Nonpoint Source
Grout Creek8 R 80171000Metals 3.5 2007Miles
Unknown Nonpoint Source
Nutrients 3.5 2008Miles
Unknown Nonpoint Source
Huntington Beach State Park8 C 80111000Enterococcus 5.8 2019
Impaired 50 yards around drain at Magnolia St.Miles
Source Unknown
Indicator bacteria 5.8 2019This listing was made by USEPA for 2006. This listing for indicator bacteria applies to the area of the beach at Brookhurst St.
Miles
Source Unknown
PCBs (Polychlorinated biphenyls) 5.8 2019
Miles
Source Unknown
Huntington Harbour8 B 80111000Chlordane 221 2019
Acres
Source Unknown
Copper 221 2019This listing was made by USEPA.
Acres
Source Unknown
Lead 221 2019
Acres
Source Unknown
Page 3 of 9
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SANTA ANA REGIONAL WATER QUALITY CONTROL BOARD
Nickel 221 2019This listing was made by USEPA.
Acres
Source Unknown
Pathogens 221 2019
Acres
Urban Runoff/Storm Sewers
PCBs (Polychlorinated biphenyls) (tissue) 221 2019This listing was made by USEPA.
Acres
Source Unknown
Sediment Toxicity 221 2019
Acres
Source Unknown
Knickerbocker Creek8 R 80171000Metals 2 2007
Miles
Unknown Nonpoint Source
Pathogens 2 2005For 2006, pathogens was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Unknown Nonpoint Source
Los Trancos Creek (Crystal Cove Creek)8 R 80111000Fecal Coliform 0.19 2019
Listing is downstream of Pacific Coast Highway.Miles
Source Unknown
Total Coliform 0.19 2019Listing is downstream of Pacific Coast Highway.
Miles
Source Unknown
Lytle Creek8 R 80141000Pathogens 41 2019Miles
Unknown Nonpoint Source
Mill Creek (Prado Area)8 R 80121000Nutrients 1.6 2019
Miles
Agriculture
Dairies
Page 4 of 9
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SANTA ANA REGIONAL WATER QUALITY CONTROL BOARD
Total Suspended Solids (TSS) 1.6 2019
Miles
Dairies
Mill Creek Reach 18 R 80156000Pathogens 12 2019
Miles
Unknown Nonpoint Source
Mill Creek Reach 28 R 80158000Pathogens 12 2019Miles
Unknown Nonpoint Source
Mountain Home Creek8 R 80158000Pathogens 3.7 2019Miles
Unknown Nonpoint Source
Mountain Home Creek, East Fork8 R 80158000Pathogens 5.1 2019Miles
Unknown Nonpoint Source
Newport Bay, Lower8 B 80114000Chlordane 767 2019
Acres
Source Unknown
Copper 767 2007
Acres
Source Unknown
DDT 767 2019
Acres
Source Unknown
PCBs (Polychlorinated biphenyls) 767 2019
Acres
Source Unknown
Sediment Toxicity 767 2019
Acres
Source Unknown
Page 5 of 9
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SANTA ANA REGIONAL WATER QUALITY CONTROL BOARD
Newport Bay, Upper (Ecological Reserve)8 E 80111000Chlordane 653 2019
Acres
Source Unknown
Copper 653 2007
Acres
Source Unknown
DDT 653 2019
Acres
Source Unknown
Metals 653 2019
Acres
Urban Runoff/Storm Sewers
PCBs (Polychlorinated biphenyls) 653 2019
Acres
Source Unknown
Sediment Toxicity 653 2019
Acres
Source Unknown
Peters Canyon Channel8 R 80111000DDT 3 2019
Miles
Source Unknown
Toxaphene 3 2019
Miles
Source Unknown
Prado Park Lake8 L 80121000Nutrients 90 2019
Acres
Nonpoint Source
Rathbone (Rathbun) Creek8 R 80171000Nutrients 4.7 2008Miles
Snow skiing activities
Unknown Nonpoint Source
Page 6 of 9
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SANTA ANA REGIONAL WATER QUALITY CONTROL BOARD
Sedimentation/Siltation 4.7 2006Miles
Snow skiing activities
Unknown Nonpoint Source
Rhine Channel8 B 80114000Copper 20 2019
Acres
Source Unknown
Lead 20 2019
Acres
Source Unknown
Mercury 20 2019
Acres
Source Unknown
PCBs (Polychlorinated biphenyls) 20 2019
Acres
Source Unknown
Sediment Toxicity 20 2019
Acres
Source Unknown
Zinc 20 2019
Acres
Source Unknown
San Diego Creek Reach 18 R 80111000Fecal Coliform 7.8 2019
Miles
Urban Runoff/Storm Sewers
Other Urban Runoff
Selenium 7.8 2007
Miles
Source Unknown
Toxaphene 7.8 2019
Miles
Source Unknown
Page 7 of 9
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SANTA ANA REGIONAL WATER QUALITY CONTROL BOARD
San Diego Creek Reach 28 R 80111000Metals 6.3 2007
Miles
Urban Runoff/Storm Sewers
Santa Ana River, Reach 48 R 80127000Pathogens 14 2019
Miles
Nonpoint Source
Santiago Creek, Reach 48 R 80112000Salinity/TDS/Chlorides 9.8 2019Miles
Source Unknown
Seal Beach8 C 80111000Enterococcus 0.53 2019
Impaired 50 yards around drain at 1st Street.Miles
Source Unknown
PCBs (Polychlorinated biphenyls) 0.53 2019
Miles
Source Unknown
Silverado Creek8 R 80112000Pathogens 11 2019Miles
Unknown Nonpoint Source
Salinity/TDS/Chlorides 11 2019Miles
Unknown Nonpoint Source
Summit Creek8 R 80171000Nutrients 1.5 2008Miles
Construction/Land Development
Page 8 of 9
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SANTA ANA REGIONAL WATER QUALITY CONTROL BOARD
"Calwater Watershed" is the State Water Resources Control Board hydrological subunit area or an even smaller area delineation.CALWATER WATERSHED
ABBREVIATIONS
GROUP A PESTICIDES OR CHEM A
aldrin, dieldrin, chlordane, endrin, heptachlor, heptachlor epoxide, hexachlorocyclohexane (including lindane), endosulfan, and toxaphene
WATER BODY TYPE
B = Bays and HarborsC = Coastal Shorelines/BeachesE = EstuariesL = Lakes/ReserviorsR = Rivers and StreamsS = Saline LakesT = Wetlands, TidalW= Wetlands, Freshwater
REGIONAL WATER QUALITY CONTROL BOARDS
1 North Coast2 San Francisco Bay3 Central Coast4 Los Angeles5 Central Valley6 Lahontan7 Colorado River Basin8 Santa Ana9 San Diego
Page 9 of 9
Regulatory_Issues_Trends.doc
Attachment A-4 San Diego RWQCB Basin Plan 303(d) List
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Agua Hedionda Creek9 R 90431000Manganese 7 2019
Miles
Source Unknown
Selenium 7 2019
Miles
Source Unknown
Sulfates 7 2019
Miles
Source Unknown
Total Dissolved Solids 7 2019
Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Agua Hedionda Lagoon9 E 90431000Indicator bacteria 6.8 2006
Acres
Nonpoint/Point Source
Sedimentation/Siltation 6.8 2019
Acres
Nonpoint/Point Source
Aliso Creek9 R 90113000Indicator bacteria 19 2005
This listing for indicator bacteria applies to the Aliso Creek mainstem and all the major tributaries of Aliso Creek which are Sulphur Creek, Wood Canyon, Aliso Hills Canyon, Dairy Fork, and English Canyon.
Miles
Urban Runoff/Storm Sewers
Unknown point source
Nonpoint/Point Source
Phosphorus 19 2019This listing for phosphorus applies to the Aliso Creek mainstem and all the major tributaries of Aliso Creek which are Sulphur Creek, Wood Canyon, Aliso Hills Canyon, Dairy Fork, and English Canyon.
Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Page 1 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Toxicity 19 2019This listing for toxicity applies to the Aliso Creek mainstem and all the major tributaries of Aliso Creek which are Sulphur Creek, Wood Canyon, Aliso Hills Canyon, Dairy Fork, and English Canyon.
Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Aliso Creek (mouth)9 E 90113000Indicator bacteria 0.29 2005Acres
Nonpoint/Point Source
Barrett Lake9 L 91130000Color 125 2019
Acres
Source Unknown
Manganese 125 2019
Acres
Source Unknown
pH 125 2019
Acres
Source Unknown
Buena Creek9 R 90432000DDT 4.8 2019
Miles
Source Unknown
Nitrate and Nitrite 4.8 2019
Miles
Source Unknown
Phosphate 4.8 2019
Miles
Source Unknown
Buena Vista Creek9 R 90421000Sediment Toxicity 11 2019
Miles
Source Unknown
Buena Vista Lagoon9 E 90421000Indicator bacteria 202 2008Acres
Nonpoint/Point Source
Page 2 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Nutrients 202 2019Estimated size of impairment is 150 acres located in upper portion of lagoon.
Acres
Nonpoint/Point Source
Sedimentation/Siltation 202 2019Acres
Nonpoint/Point Source
Chollas Creek9 R 90822000Copper 3.5 2004
Miles
Nonpoint/Point Source
Indicator bacteria 3.5 2005
Miles
Nonpoint/Point Source
Lead 3.5 2004
Miles
Nonpoint/Point Source
Zinc 3.5 2004
Miles
Nonpoint/Point Source
Cloverdale Creek9 R 90532000Phosphorus 1.2 2019
Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Total Dissolved Solids 1.2 2019
Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Cottonwood Creek (San Marcos Creek watershed)
9 R 90451000
DDT 1.9 2019
Miles
Source Unknown
Page 3 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Phosphorus 1.9 2019
Miles
Source Unknown
Sediment Toxicity 1.9 2019
Miles
Source Unknown
Dana Point Harbor9 B 90114000Indicator bacteria 119 2006
Impairment located at Baby Beach.Acres
Urban Runoff/Storm Sewers
Marinas and Recreational Boating
Unknown Nonpoint Source
Unknown point source
De Luz Creek9 R 90221000Iron 14 2019
Miles
Source Unknown
Manganese 14 2019
Miles
Source Unknown
El Capitan Lake9 L 90731000Color 1454 2019
Acres
Source Unknown
Manganese 1454 2019
Acres
Source Unknown
pH 1454 2019
Acres
Source Unknown
Encinitas Creek9 R 90451000Phosphorus 3 2019
Miles
Source Unknown
Page 4 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
English Canyon9 R 90113000Benzo[b]fluoranthene 3.6 2019
Miles
Source Unknown
Dieldrin 3.6 2019
Miles
Source Unknown
Sediment Toxicity 3.6 2019
Miles
Source Unknown
Escondido Creek9 R 90462000DDT 26 2019
Miles
Source Unknown
Manganese 26 2019
Miles
Source Unknown
Phosphate 26 2019
Miles
Source Unknown
Selenium 26 2019
Miles
Source Unknown
Sulfates 26 2019
Miles
Source Unknown
Total Dissolved Solids 26 2019
Miles
Source Unknown
Famosa Slough and Channel9 E 90711000Eutrophic 32 2019
Acres
Nonpoint Source
Felicita Creek9 R 90523000Aluminum 0.92 2019
Miles
Source Unknown
Page 5 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Total Dissolved Solids 0.92 2019
Miles
Agricultural Return Flows
Urban Runoff/Storm Sewers
Flow Regulation/Modification
Unknown Nonpoint Source
Unknown point source
Forester Creek9 R 90712000Fecal Coliform 6.4 2005
Impairment Located at lower 1 mile.Miles
Urban Runoff/Storm Sewers
Spills
Unknown Nonpoint Source
Unknown point source
Oxygen, Dissolved 6.4 2019
Miles
Source Unknown
pH 6.4 2019Impairment Located at upper 3 miles.
Miles
Industrial Point Sources
Habitat Modification
Spills
Unknown Nonpoint Source
Unknown point source
Phosphorus 6.4 2019
Miles
Source Unknown
Total Dissolved Solids 6.4 2019Impairment Located at lower 1 mile.
Miles
Agricultural Return Flows
Urban Runoff/Storm Sewers
Flow Regulation/Modification
Unknown Nonpoint Source
Unknown point source
Page 6 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Green Valley Creek9 R 90521000Chloride 0.98 2019
Miles
Source Unknown
Manganese 0.98 2019
Miles
Source Unknown
Pentachlorophenol (PCP) 0.98 2019
Miles
Source Unknown
Sulfates 0.98 2019
Miles
Urban Runoff/Storm Sewers
Natural Sources
Unknown Nonpoint Source
Unknown point source
Guajome Lake9 L 90311000Eutrophic 33 2019Acres
Nonpoint/Point Source
Hodges, Lake9 L 90521000Color 1104 2019
Acres
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Manganese 1104 2019
Acres
Source Unknown
Nitrogen 1104 2019
Acres
Agriculture
Dairies
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Page 7 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
pH 1104 2019
Acres
Source Unknown
Phosphorus 1104 2019
Acres
Agriculture
Dairies
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Turbidity 1104 2019
Acres
Source Unknown
Kit Carson Creek9 R 90521000Pentachlorophenol (PCP) 0.99 2019
Miles
Source Unknown
Total Dissolved Solids 0.99 2019
Miles
Agricultural Return Flows
Urban Runoff/Storm Sewers
Flow Regulation/Modification
Unknown Nonpoint Source
Unknown point source
Laguna Canyon Channel9 R 90112000Sediment Toxicity 1.6 2019
Miles
Source Unknown
Loma Alta Slough9 E 90410000Eutrophic 8.2 2019Acres
Nonpoint Source
Indicator bacteria 8.2 2008Acres
Nonpoint Source
Page 8 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Long Canyon Creek9 R 90283000Total Dissolved Solids 8.3 2019
Miles
Source Unknown
Los Penasquitos Creek9 R 90610000Phosphate 12 2019
Miles
Source Unknown
Total Dissolved Solids 12 2019
Miles
Source Unknown
Los Penasquitos Lagoon9 E 90610000Sedimentation/Siltation 469 2019Acres
Nonpoint/Point Source
Loveland Reservoir9 L 90931000Aluminum 420 2019
Acres
Source Unknown
Manganese 420 2019
Acres
Source Unknown
Oxygen, Dissolved 420 2019
Acres
Source Unknown
pH 420 2019This listing was made by USEPA for 2006.
Acres
Source Unknown
Mission Bay (area at mouth of Rose Creek only)
9 B 90640000
Eutrophic 9.2 2019Acres
Nonpoint/Point Source
Lead 9.2 2019Acres
Nonpoint/Point Source
Page 9 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Mission Bay (area at mouth of Tecolote Creek only)
9 B 90650000
Eutrophic 3.1 2019Acres
Nonpoint/Point Source
Lead 3.1 2019Acres
Nonpoint/Point Source
Mission Bay Shoreline9 C 90630000Indicator bacteria 28 2019
This listing was made by USEPA for 2006.Miles
Source Unknown
Morena Reservoir9 L 91150000Color 104 2019
Acres
Source Unknown
Manganese 104 2019
Acres
Source Unknown
pH 104 2019
Acres
Source Unknown
Murray Reservoir9 L 90711000pH 119 2019
Acres
Source Unknown
Murrieta Creek9 R 90252000Iron 12 2019
Miles
Source Unknown
Manganese 12 2019
Miles
Source Unknown
Nitrogen 12 2019
Miles
Source Unknown
Page 10 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Phosphorus 12 2019
Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Oso Creek (at Mission Viejo Golf Course)9 R 90120000Chloride 1 2019
Miles
Source Unknown
Sulfates 1 2019
Miles
Source Unknown
Total Dissolved Solids 1 2019
Miles
Source Unknown
Otay Reservoir, Lower9 L 91031000Color 1050 2019
Acres
Source Unknown
Iron 1050 2019
Acres
Source Unknown
Manganese 1050 2019
Acres
Source Unknown
Nitrogen, ammonia (Total Ammonia) 1050 2019
Acres
Source Unknown
pH (high) 1050 2019
Acres
Source Unknown
Pacific Ocean Shoreline, Aliso HSA9 C 90113000Indicator bacteria 0.65 2005
Impairment located at Laguna Beach at Lagunita Place / Blue Lagoon Place, Aliso Beach.Miles
Nonpoint/Point Source
Page 11 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Pacific Ocean Shoreline, Buena Vista Creek HA
9 C 90421000
Indicator bacteria 1.2 2008Impairment located at Buena Vista Creek, Carlsbad City Beach at Carlsbad Village Drive, Carlsbad State Beach at Pine Avenue.
Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, Dana Point HSA9 C 90114000Indicator bacteria 2 2005
Impairment located at Aliso Beach at West Street, Aliso Beach at Table Rock Drive, 1000 Steps Beach at Pacific Coast Hwy (Hospital, 9th Ave), Salt Creek (large outlet), Salt Creek Beach at Salt Creek service road, Salt Creek Beach at Dana Strand Road, and Monarch Beach.
Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, Escondido Creek HA
9 C 90461000
Indicator bacteria 0.44 2008Impairment located at San Elijo Lagoon outlet.
Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, Imperial Beach Pier
9 C 91010000
PCBs (Polychlorinated biphenyls) 0.42 2019
Miles
Source Unknown
Pacific Ocean Shoreline, Laguna Beach HSA
9 C 90112000
Indicator bacteria 1.8 2005Impairment located at Main Laguna Beach, Laguna Beach at Ocean Avenue, Laguna Beach at Laguna Avenue, Laguna Beach at Cleo Street, Arch Cove at Bluebird Canyon Road, Laguna Beach at Dumond Drive.
Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, Loma Alta HA9 C 90410000Indicator bacteria 1.1 2008
Impairment located at Loma Alta Creek Mouth.Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, Lower San Juan HSA
9 C 90120000
Indicator bacteria 1.2 2008Impairment located at North Beach Creek, San Juan Creek (large outlet), Capistrano Beach, South Capistrano Beach at Beach Road.
Miles
Nonpoint/Point Source
Page 12 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Pacific Ocean Shoreline, San Clemente HA9 C 90130000Indicator bacteria 3.7 2005
Impairment located at Poche Beach (large outlet), Ole Hanson Beach Club Beach at Pico Drain, San Clemente City Beach at El Portal St. Stairs, San Clemente City Beach at Mariposa St., San Clemente City Beach at Linda Lane, San Clemente City Beach at South Linda Lane, San Clemente City Beach at Lifeguard Headquarters, Under San Clemente Municipal Pier, San Clemente City Beach at Trafalgar Canyon (Trafalgar Ln.), San Clemente State Beach at Riviera Beach, San Clemente State Beach at Cypress Shores.
Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, San Diego HU9 C 90711000Indicator bacteria 0.37 2005
Impairment located at San Diego River Mouth (aka Dog Beach).Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, San Diequito HU9 C 90511000Indicator bacteria 0.86 2005
Impairment located at San Dieguito Lagoon Mouth, Solana Beach.Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, San Joaquin Hills HSA
9 C 90111000
Indicator bacteria 0.63 2005Impairment located at Cameo Cove at Irvine Cove Dr./Riviera Way, Heisler Park-North
Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Pacific Ocean Shoreline, San Luis Rey HU9 C 90311000Indicator bacteria 0.49 2005
Impairment located at San Luis Rey River Mouth.Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, San Marcos HA9 C 90451000Indicator bacteria 0.5 2005
Impairment located at Moonlight State Beach.Miles
Nonpoint/Point Source
Pacific Ocean Shoreline, Scripps HA9 C 90630000Indicator bacteria 3.9 2019
This listing for indicator bacteria onliy applies to the Childrens Pool Beach area of this ocean shoreline segment.Miles
Nonpoint/Point Source
Page 13 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Pacific Ocean Shoreline, Tijuana HU9 C 91111000Indicator bacteria 3 2010
Impairment located from the border, extending north along the shore.Miles
Nonpoint/Point Source
Pine Valley Creek (Upper)9 R 91141000Enterococcus 2.9 2010
Miles
Grazing-Related Sources
Concentrated Animal Feeding Operations (permitted, point source)
Transient encampments
Phosphorus 2.9 2019
Miles
Source Unknown
Turbidity 2.9 2019
Miles
Source Unknown
Pogi Canyon Creek9 R 91020000DDT 7.8 2019
Miles
Source Unknown
Prima Deshecha Creek9 R 90130000Phosphorus 1.2 2019Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Turbidity 1.2 2019Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Rainbow Creek9 R 90222000Iron 5 2019
Miles
Source Unknown
Page 14 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Sulfates 5 2019
Miles
Source Unknown
Total Dissolved Solids 5 2019
Miles
Source Unknown
Reidy Canyon Creek9 R 90462000Phosphorus 3.9 2019
Miles
Source Unknown
San Diego Bay9 B 91010000PCBs (Polychlorinated biphenyls) 10783 2019
Acres
Source Unknown
San Diego Bay Shoreline, 32nd St San Diego Naval Station
9 B 90822000
Benthic Community Effects 103 2019Acres
Nonpoint/Point Source
Sediment Toxicity 103 2019Acres
Nonpoint/Point Source
San Diego Bay Shoreline, at Americas Cup Harbor
9 B 90810000
Copper 88 2019
Acres
Source Unknown
San Diego Bay Shoreline, at Bayside Park (J Street)
9 B 90911000
Indicator bacteria 50 2019This listing was made by USEPA for 2006.
Acres
Source Unknown
San Diego Bay Shoreline, at Coronado Cays9 B 91010000Copper 47 2019
Acres
Source Unknown
Page 15 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
San Diego Bay Shoreline, at Glorietta Bay9 B 91010000Copper 52 2019
Acres
Source Unknown
San Diego Bay Shoreline, at Harbor Island (East Basin)
9 B 90821000
Copper 73 2019
Acres
Source Unknown
San Diego Bay Shoreline, at Harbor Island (West Basin)
9 B 90810000
Copper 132 2019
Acres
Source Unknown
San Diego Bay Shoreline, at Marriott Marina
9 B 90821000
Copper 24 2019
Acres
Source Unknown
San Diego Bay Shoreline, between Sampson and 28th Streets
9 B 90822000
Copper 53 2005
Acres
Nonpoint/Point Source
Mercury 53 2006
Acres
Nonpoint/Point Source
PAHs (Polycyclic Aromatic Hydrocarbons) 53 2006
Acres
Nonpoint/Point Source
PCBs (Polychlorinated biphenyls) 53 2019
Acres
Nonpoint/Point Source
Zinc 53 2019
Acres
Nonpoint/Point Source
Page 16 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
San Diego Bay Shoreline, Chula Vista Marina
9 C 90912000
Copper 0.41 2019
Miles
Source Unknown
San Diego Bay Shoreline, Downtown Anchorage
9 B 90821000
Benthic Community Effects 7.4 2019Acres
Nonpoint/Point Source
Sediment Toxicity 7.4 2019Acres
Nonpoint/Point Source
San Diego Bay Shoreline, G Street Pier9 C 90821000Indicator bacteria 0.42 2006Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
San Diego Bay Shoreline, near Chollas Creek
9 B 90822000
Benthic Community Effects 15 2006Acres
Nonpoint/Point Source
Sediment Toxicity 15 2006Acres
Nonpoint/Point Source
San Diego Bay Shoreline, near Coronado Bridge
9 B 90822000
Benthic Community Effects 37 2019Acres
Nonpoint/Point Source
Sediment Toxicity 37 2019Includes Crosby Street/Cesar Chavez Park area, that will receive additional monitoring.
Acres
Nonpoint/Point Source
San Diego Bay Shoreline, near sub base9 B 90810000Benthic Community Effects 16 2019Acres
Nonpoint/Point Source
Sediment Toxicity 16 2019Acres
Nonpoint/Point Source
Page 17 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
San Diego Bay Shoreline, near Switzer Creek
9 B 90821000
Chlordane 5.5 2019Acres
Urban Runoff/Storm Sewers
Other
Boatyards
Nonpoint/Point Source
Lindane/Hexachlorocyclohexane (HCH) 5.5 2019Acres
Urban Runoff/Storm Sewers
Other
Boatyards
Nonpoint/Point Source
PAHs (Polycyclic Aromatic Hydrocarbons) 5.5 2019Acres
Urban Runoff/Storm Sewers
Other
Boatyards
Nonpoint/Point Source
San Diego Bay Shoreline, North of 24th Street Marine Terminal
9 B 90832000
Benthic Community Effects 9.5 2019Acres
Nonpoint/Point Source
Sediment Toxicity 9.5 2019Acres
Nonpoint/Point Source
San Diego Bay Shoreline, Seventh Street Channel
9 B 90831000
Benthic Community Effects 9 2008Acres
Nonpoint/Point Source
Sediment Toxicity 9 2008Acres
Nonpoint/Point Source
San Diego Bay Shoreline, Shelter Island Shoreline Park
9 C 90810000
Indicator bacteria 0.42 2006Miles
Unknown Nonpoint Source
Unknown point source
Page 18 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
San Diego Bay Shoreline, Vicinity of B St and Broadway Piers
9 B 90821000
Benthic Community Effects 9.9 2019Acres
Nonpoint/Point Source
Indicator bacteria 9.9 2006Estimated size of impairment is 0.4 miles around the shoreline of the bay.
Acres
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Sediment Toxicity 9.9 2019Acres
Nonpoint/Point Source
San Diego River (Lower)9 R 90711000Fecal Coliform 16 2005
Lower 6 miles.Miles
Urban Runoff/Storm Sewers
Wastewater
Nonpoint/Point Source
Low Dissolved Oxygen 16 2019Impairment transcends adjacent Calwater wtareshed 90712.
Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Phosphorus 16 2019Impairment transcends adjacent Calwater watershed 90712.
Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Total Dissolved Solids 16 2019Impairment transcends adjacent Calwater watershed 90712.
Miles
Urban Runoff/Storm Sewers
Flow Regulation/Modification
Natural Sources
Unknown Nonpoint Source
Unknown point source
Page 19 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
San Elijo Lagoon9 E 90461000Eutrophic 566 2019
Estimated size of impairment is 330 acres.Acres
Nonpoint/Point Source
Indicator bacteria 566 2008Estimated size of impairment is 150 acres.
Acres
Nonpoint/Point Source
Sedimentation/Siltation 566 2019Estimated size of impairment is 150 acres.
Acres
Nonpoint/Point Source
San Juan Creek9 R 90120000DDE 1 2019
Miles
Source Unknown
Indicator bacteria 1 2005
Miles
Nonpoint/Point Source
San Juan Creek (mouth)9 E 90120000Indicator bacteria 6.3 2008Acres
Nonpoint/Point Source
San Luis Rey River9 R 90311000Chloride 19 2019
Impairment located at lower 13 miles.Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Page 20 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Total Dissolved Solids 19 2019
Miles
Industrial Point Sources
Agriculture-storm runoff
Urban Runoff/Storm Sewers
Surface Mining
Flow Regulation/Modification
Natural Sources
Golf course activities
Unknown Nonpoint Source
Unknown point source
San Marcos Creek9 R 90451000DDE 19 2019
Miles
Source Unknown
Phosphorus 19 2019
Miles
Source Unknown
Sediment Toxicity 19 2019
Miles
Source Unknown
San Marcos Lake9 L 90452000Ammonia as Nitrogen 17 2019
Acres
Source Unknown
Nutrients 17 2019
Acres
Source Unknown
Phosphorus 17 2019
Acres
Source Unknown
San Vicente Reservoir9 L 90721000Chloride 1058 2019
Acres
Source Unknown
Page 21 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Color 1058 2019
Acres
Source Unknown
Manganese 1058 2019
Acres
Source Unknown
pH (high) 1058 2019
Acres
Source Unknown
Sulfates 1058 2019
Acres
Source Unknown
Sandia Creek9 R 90222000Iron 1.5 2019
Miles
Source Unknown
Manganese 1.5 2019
Miles
Source Unknown
Nitrogen 1.5 2019
Miles
Source Unknown
Sulfates 1.5 2019
Miles
Source Unknown
Total Dissolved Solids 1.5 2019
Miles
Urban Runoff/Storm Sewers
Flow Regulation/Modification
Natural Sources
Unknown Nonpoint Source
Unknown point source
Santa Margarita Lagoon9 E 90211000Eutrophic 28 2019Acres
Nonpoint/Point Source
Page 22 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Santa Margarita River (Upper)9 R 90222000Phosphorus 18 2019Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Segunda Deshecha Creek9 R 90130000Phosphorus 0.92 2019Miles
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Turbidity 0.92 2019Miles
Construction/Land Development
Urban Runoff/Storm Sewers
Channelization
Flow Regulation/Modification
Unknown Nonpoint Source
Unknown point source
Soledad Canyon9 R 90610000Sediment Toxicity 1.7 2019
Miles
Source Unknown
Sutherland Reservoir9 L 90553000Color 561 2019
Acres
Urban Runoff/Storm Sewers
Unknown Nonpoint Source
Unknown point source
Manganese 561 2019
Acres
Source Unknown
pH 561 2019
Acres
Source Unknown
Page 23 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Sweetwater Reservoir9 L 90921000Oxygen, Dissolved 925 2019
Acres
Source Unknown
Tecolote Creek9 R 90650000Cadmium 6.6 2019
Miles
Nonpoint/Point Source
Copper 6.6 2019
Miles
Nonpoint/Point Source
Indicator bacteria 6.6 2006
Miles
Nonpoint/Point Source
Lead 6.6 2019
Miles
Nonpoint/Point Source
Phosphorus 6.6 2019
Miles
Source Unknown
Toxicity 6.6 2019
Miles
Nonpoint/Point Source
Turbidity 6.6 2019
Miles
Source Unknown
Zinc 6.6 2019
Miles
Nonpoint/Point Source
Temecula Creek9 R 90251000Nitrogen 44 2019
Miles
Source Unknown
Phosphorus 44 2019
Miles
Source Unknown
Page 24 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Total Dissolved Solids 44 2019
Miles
Source Unknown
Tijuana River9 R 91111000Eutrophic 6 2019
Miles
Nonpoint/Point Source
Indicator bacteria 6 2010
Miles
Nonpoint/Point Source
Low Dissolved Oxygen 6 2019
Miles
Nonpoint/Point Source
Pesticides 6 2019
Miles
Nonpoint/Point Source
Solids 6 2019
Miles
Nonpoint/Point Source
Synthetic Organics 6 2019
Miles
Nonpoint/Point Source
Trace Elements 6 2019
Miles
Nonpoint/Point Source
Trash 6 2019
Miles
Nonpoint/Point Source
Tijuana River Estuary9 E 91111000Eutrophic 1319 2019
Estimated size of impairment is 1 acre.Acres
Nonpoint/Point Source
Indicator bacteria 1319 2010Estimated size of impairment is 150 acres.
Acres
Nonpoint/Point Source
Page 25 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
Lead 1319 2019Estimated size of impairment is 1 acre.
Acres
Nonpoint/Point Source
Low Dissolved Oxygen 1319 2019
Acres
Urban Runoff/Storm Sewers
Wastewater
Unknown Nonpoint Source
Unknown point source
Nickel 1319 2019Estimated size of impairment is 1 acre.
Acres
Nonpoint/Point Source
Pesticides 1319 2019Estimated size of impairment is 1 acre.
Acres
Nonpoint/Point Source
Thallium 1319 2019Estimated size of impairment is 1 acre.
Acres
Nonpoint/Point Source
Trash 1319 2019Estimated size of impairment is 1 acre.
Acres
Nonpoint/Point Source
Turbidity 1319 2019
Acres
Source Unknown
Page 26 of 27
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD
"Calwater Watershed" is the State Water Resources Control Board hydrological subunit area or an even smaller area delineation.CALWATER WATERSHED
ABBREVIATIONS
GROUP A PESTICIDES OR CHEM A
aldrin, dieldrin, chlordane, endrin, heptachlor, heptachlor epoxide, hexachlorocyclohexane (including lindane), endosulfan, and toxaphene
WATER BODY TYPE
B = Bays and HarborsC = Coastal Shorelines/BeachesE = EstuariesL = Lakes/ReserviorsR = Rivers and StreamsS = Saline LakesT = Wetlands, TidalW= Wetlands, Freshwater
REGIONAL WATER QUALITY CONTROL BOARDS
1 North Coast2 San Francisco Bay3 Central Coast4 Los Angeles5 Central Valley6 Lahontan7 Colorado River Basin8 Santa Ana9 San Diego
Page 27 of 27
Regulatory_Issues_Trends.doc
Attachment A-5 Colorado River RWQCB Basin Plan 303(d) List
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
COLORADO RIVER BASIN REGIONAL WATER QUALITY CONTROL BOARD
Alamo River7 R 72310000Chlorpyrifos 57 2019
Miles
Source Unknown
DDT 57 2019
Miles
Source Unknown
Dieldrin 57 2019
Miles
Source Unknown
PCBs (Polychlorinated biphenyls) 57 2019
Miles
Source Unknown
Selenium 57 2003Selenium originates from Upper Basin Portion of Colorado River. Elevated fish tissue levels. For 2006, selenium was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
Miles
Agricultural Return Flows
Toxaphene 57 2019
Miles
Source Unknown
Coachella Valley Storm Water Channel7 R 71947000Pathogens 24 2006
This listing for pathogens only applies to a 17 mile area of the Coachella Valley Storm Water Channel from Dillion Road to the Salton Sea.
Miles
Source Unknown
Toxaphene 24 2019This listing for toxaphene only applies to a 2 mile area of the Coachella Valley Storm Water Channel from Lincoln Street to the Salton Sea.
Miles
Source Unknown
Colorado River (Imperial Reservoir to California-Mexico Border)
7 R 72700000
Selenium 11 2019
Miles
Source Unknown
Page 1 of 6
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
COLORADO RIVER BASIN REGIONAL WATER QUALITY CONTROL BOARD
Imperial Valley Drains7 R 72310000DDT 1225 2019
The listing for DDT only applies to the Barbara Worth Drain, Peach Drain, and Rice Drain areas of the Imperial Valley drains.
Miles
Source Unknown
Dieldrin 1225 2019The listing for dieldrin only applies to the Barbara Worth Drain and Fig Drain areas of the Imperial Valley drains.
Miles
Source Unknown
Endosulfan 1225 2019The listing for endosulfan only applies to the Peach Drain area of the Imperial Valley drains.
Miles
Source Unknown
PCBs (Polychlorinated biphenyls) 1225 2019The listing for PCBs only applies to the Central Drain area of the Imperial Valley drains, from Meloland Road to the outlet into the Alamo River.
Miles
Source Unknown
Selenium 1225 2019Selenium originates from Upper Basin Portion of Colorado River. Elevated fish tissue levels.
Miles
Agricultural Return Flows
Toxaphene 1225 2019This listing for toxaphene only applies to the Barbara Worth Drain, Peach Drain, and Rice Drain of the Imperial Valley drains.
Miles
Source Unknown
New River (Imperial County)7 R 728000001,2,4-Trimethylbenzene 66 2006
Miles
Industrial Point Sources
Out-of-state source
Chlordane 66 2019
Miles
Source Unknown
Chloroform 66 2006
Miles
Industrial Point Sources
Out-of-state source
Chlorpyrifos 66 2019
Miles
Source Unknown
Page 2 of 6
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
COLORADO RIVER BASIN REGIONAL WATER QUALITY CONTROL BOARD
Copper 66 2019This listing was made by USEPA for 2006.
Miles
Source Unknown
DDT 66 2019
Miles
Source Unknown
Diazinon 66 2019
Miles
Source Unknown
Dieldrin 66 2019
Miles
Source Unknown
Mercury 66 2019
Miles
Source Unknown
meta-para xylenes 66 2006
Miles
Industrial Point Sources
Out-of-state source
Nutrients 66 2006Regional Board proposes to establish TMDL in cooperation with U.S. EPA and Mexico.
Miles
Major Municipal Point Source-dry and/or wet weather discharge
Agricultural Return Flows
Out-of-state source
Organic Enrichment/Low Dissolved Oxygen 66 2006
Miles
Wastewater
Inappropriate Waste Disposal/Wildcat Dumping
Out-of-state source
Unknown point source
o-Xylenes 66 2006
Miles
Industrial Point Sources
Out-of-state source
Page 3 of 6
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
COLORADO RIVER BASIN REGIONAL WATER QUALITY CONTROL BOARD
PCBs (Polychlorinated biphenyls) 66 2019
Miles
Source Unknown
p-Cymene 66 2006
Miles
Industrial Point Sources
Out-of-state source
p-Dichlorobenzene/DCB 66 2006
Miles
Industrial Point Sources
Out-of-state source
Pesticides 66 2019
Miles
Agricultural Return Flows
Out-of-state source
Selenium 66 2019
Miles
Source Unknown
Toluene 66 2006
Miles
Industrial Point Sources
Out-of-state source
Toxaphene 66 2019
Miles
Source Unknown
Toxicity 66 2019
Miles
Source Unknown
Trash 66 2006
Miles
Out-of-state source
Palo Verde Outfall Drain and Lagoon7 R 71540000DDT 19 2019
Miles
Source Unknown
Page 4 of 6
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
COLORADO RIVER BASIN REGIONAL WATER QUALITY CONTROL BOARD
Pathogens 19 2019This listing was made by USEPA for 2006.
Miles
Source Unknown
Salton Sea7 S 72800000Nutrients 233340 2006Acres
Major Industrial Point Source
Agricultural Return Flows
Out-of-state source
Salinity 233340 2019TMDL development will not be effective in addressing this problem, which will require an engineering solution with federal, local, and state cooperation.
Acres
Agricultural Return Flows
Out-of-state source
Point Source
Selenium 233340 2019Acres
Agricultural Return Flows
Page 5 of 6
REGION TYPE NAME POLLUTANT/STRESSORCALWATER
WATERSHED ESTIMATED
SIZE AFFECTEDPOTENTIAL
SOURCES
2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS
COMPLETIONPROPOSED TMDL
USEPA APPROVAL DATE: JUNE 28, 2007
COLORADO RIVER BASIN REGIONAL WATER QUALITY CONTROL BOARD
"Calwater Watershed" is the State Water Resources Control Board hydrological subunit area or an even smaller area delineation.CALWATER WATERSHED
ABBREVIATIONS
GROUP A PESTICIDES OR CHEM A
aldrin, dieldrin, chlordane, endrin, heptachlor, heptachlor epoxide, hexachlorocyclohexane (including lindane), endosulfan, and toxaphene
WATER BODY TYPE
B = Bays and HarborsC = Coastal Shorelines/BeachesE = EstuariesL = Lakes/ReserviorsR = Rivers and StreamsS = Saline LakesT = Wetlands, TidalW= Wetlands, Freshwater
REGIONAL WATER QUALITY CONTROL BOARDS
1 North Coast2 San Francisco Bay3 Central Coast4 Los Angeles5 Central Valley6 Lahontan7 Colorado River Basin8 Santa Ana9 San Diego
Page 6 of 6