Statewide CATEGORY 4B Final 2020 Integrated Report (CWA Section 303(d) List / 305(b) Report)
2020 CALIFORNIA LIST OF WATER QUALITY LIMITED SEGMENTS
BEING ADDRESSED BY ACTIONS OTHER THAN TMDLS
 
 REGION  WATER BODY NAME WATER TYPE WATERSHED*
CALWATER / USGS HUC
  • POLLUTANT
    • POTENTIAL SOURCES
  • Relevant Notes
ESTIMATED AREA ASSESSED FIRST YEAR LISTED PROGRAM COMPLETION DATE

Region 2

Baxter Creek (Contra Costa County)

River & Stream

2203.300001  /  18050002
  • Trash
    • A Source Unknown

1.6 Miles

2010

2029


Region 2

Castro Cove, Richmond (San Pablo Basin)

Estuary

2206.600104  /  18050002
  • Dieldrin
    • A Source Unknown

68 Acres

2014

2010
  • Mercury (sediment)
    • A Source Unknown

68 Acres

2016

2010
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • A Source Unknown

68 Acres

2014

2010
  • Selenium
    • Point Source
    • Urban Runoff/Storm Sewers

68 Acres

2014

2010


Region 2

Cerrito Creek

River & Stream

2203.300001,2203.300002  /  18050002
  • Trash
    • A Source Unknown

2 Miles

2010

2029


Region 2

Colma Creek

River & Stream

2204.400202  /  18050004
  • Trash
    • A Source Unknown

3.9 Miles

2010

2029


Region 2

Damon Slough

River & Stream

2204.200400  /  18050004
  • Trash
    • A Source Unknown

0.98 Miles

2010

2029


Region 2

Grayson Creek

River & Stream

2207.310104, 2207.330002, 2207.330003  /  18050001
  • Trash
    • A Source Unknown

12 Miles

2010

2029


Region 2

Lower Silver Creek subwatershed (Santa Clara County, tributary to Coyote Creek)

River & Stream

2205.300601, 2205.300800  /  18050003
  • Trash
    • A Source Unknown

15 Miles

2010

2029


Region 2

Old Alameda Creek

River & Stream

2204.200400  /  18050004
  • Trash
    • A Source Unknown

10 Miles

2010

2029


Region 2

Rindler Creek

River & Stream

2206.500405,2206.500407  /  18050002
  • Trash
    • A Source Unknown

6.1 Miles

2010

2029


Region 2

San Tomas Aquinas Creek (Santa Clara County)

River & Stream

2205.500400,2205.500500  /  18050003
  • Trash
    • A Source Unknown

18 Miles

2010

2029


Region 2

Sausal Creek

River & Stream

2204.200300,2204.200400  /  18050004
  • Trash
    • A Source Unknown

3.1 Miles

2010

2029


Region 2

Stege Marsh

Estuary

2203.300001  /  18050002
  • Chlordane
    • A Source Unknown

4.4 Acres

2006

2019
  • Copper
    • A Source Unknown

4.4 Acres

2006

2019
  • Dacthal
    • A Source Unknown

4.4 Acres

2006

2019
  • Dieldrin
    • A Source Unknown

4.4 Acres

2006

2019
  • Mercury
    • A Source Unknown

4.4 Acres

2006

2019
  • PCBs (Polychlorinated biphenyls)
    • A Source Unknown

4.4 Acres

2006

2019
  • Zinc
    • A Source Unknown

4.4 Acres

2006

2019


Region 2

Strawberry Creek (Alameda County)

River & Stream

 /  18050002
  • Trash
    • A Source Unknown

0.83 Miles

2010

2029


Region 4

J Street Drain (Ventura County)

River & Stream

4410.000000  /  18070103
  • Trash
    • A Source Unknown

2.3 Miles

2014

2027


Region 4

Santa Clara River Reach 4A (A Street, Fillmore to Piru Creek)

River & Stream

4403.310000,4403.410000  / 
  • Trash
    • A Source Unknown

7.9 Miles

2014

2027


Region 4

Santa Paula Creek Reach 1 (confluence w Santa Clara River to Diverson Dam)

River & Stream

40321000  /  18070102
  • Trash
    • A Source Unknown

1.8 Miles

2014

2027


Region 4

Sespe Creek (Santa Clara River Reach 3 to Little Sespe Creek)

River & Stream

4403.310000  /  18070102
  • Trash
    • A Source Unknown

3.3 Miles

2014

2027


Region 5

Morrison Slough

River & Stream

5520.300000  /  18020106
  • Diazinon
    • Agriculture

13 Miles

2010

2026


Region 5

Poso Slough

River & Stream

6541.200000  /  18040001
  • Toxicity
    • A Source Unknown

15 Miles

2014

2024


Region 5

Winters Canal (Yolo County)

River & Stream

51120000  /  18020109
  • Diazinon
    • Agriculture

15 Miles

2010

2026


Region 6

Aspen Creek

River & Stream

8632.100800  /  16050201
  • Metals
    • A Source Unknown

0.99 Miles

1992

2019
    This listing is being addressed through a CERCLA remediation program and through ongoing work by Lahontan Water Board staff.


Region 6

Bryant Creek

River & Stream

8632.100800  /  16050201
  • Metals
    • Acid Mine Drainage
    • Inactive Mining
    • Mine Tailings
    • Nonpoint Source

3.3 Miles

1992

2019
    This listing is being addressed through a CERCLA remediation program and through ongoing work by Lahontan Water Board staff.


Region 6

Buckeye Creek

River & Stream

8630.300500,8630.400201,8630.400202,8630.400204  /  16050301
  • Indicator Bacteria
    • Agricultural Water Diversion
    • Agriculture-grazing
    • Grazing-Related Sources
    • Natural Sources
    • Pasture Grazing-Riparian and/or Upland
    • Streambank Modification/Destabilization
    • Unknown Nonpoint Source

18 Miles

2014

2028
    This waterbody segment was previously listed as impaired by bacteria for the REC-1 beneficial use. Due to changes to the REC-1 bacteria water quality standard which is now based on E. coli as the indicator of impairment, this waterbody segment is now listed for the MUN beneficial use based on evaluation of fecal coliform data against the Lahontan Regions' bacteria water quality standard.


Region 6

East Walker River, above Bridgeport Reservoir

River & Stream

8630.300500  /  16050301
  • Indicator Bacteria
    • Agricultural Water Diversion
    • Agriculture-grazing
    • Grazing-Related Sources
    • Natural Sources
    • Pasture Grazing-Riparian and/or Upland
    • Streambank Modification/Destabilization
    • Unknown Nonpoint Source

7.8 Miles

2014

2028


Region 6

Leviathan Creek

River & Stream

8632.100800  /  16050201
  • Metals
    • Acid Mine Drainage

3.3 Miles

1992

2019


Region 6

Mid-Branch Buckeye Creek

River & Stream

8630.300500  / 
  • Indicator Bacteria
    • Agricultural Water Diversion
    • Agriculture-grazing
    • Grazing-Related Sources
    • Natural Sources
    • Pasture Grazing-Riparian and/or Upland
    • Streambank Modification/Destabilization
    • Unknown Nonpoint Source

2.5 Miles

2014

2028
    This waterbody segment is listed as impaired by bacteria for the MUN beneficial use based on evaluation of fecal coliform data against the Lahontan Regions' bacteria water quality standard.


Region 6

Mono Lake

Saline Lake

9601.000305,9601.000306,9601.000800  /  18090101
  • Salinity/TDS/Chlorides
    • Crop-Related Sources

45299 Acres

1998

2019


Region 6

Robinson Creek (Hwy 395 to Bridgeport Res)

River & Stream

8630.300500  /  16050301
  • Indicator Bacteria
    • Agricultural Water Diversion
    • Agriculture-grazing
    • Grazing-Related Sources
    • Natural Sources
    • Pasture Grazing-Riparian and/or Upland
    • Streambank Modification/Destabilization
    • Unknown Nonpoint Source

2 Miles

2014

2028


Region 6

Robinson Creek (Twin Lakes to Hwy 395)

River & Stream

8630.300500,8630.400302  /  16050301
  • Indicator Bacteria
    • Agricultural Water Diversion
    • Agriculture-grazing
    • Grazing-Related Sources
    • Natural Sources
    • Pasture Grazing-Riparian and/or Upland
    • Streambank Modification/Destabilization
    • Unknown Nonpoint Source

9.8 Miles

2014

2028
    This waterbody segment is updated to listed as impaired by bacteria for the MUN beneficial use based on evaluation of fecal coliform data against the Lahontan Regions' bacteria water quality standard.


Region 6

Searles Lake

Saline Lake

9621.100000  /  18090205
  • Salinity/TDS/Chlorides
    • A Source Unknown

42908 Acres

2006

2019
    This listing is being addressed through Lahontan Water Board Cleanup and Abatement Orders 6-00-64, 6-00-64A1 and 6-00-64A2.
  • Total Petroleum Hydrocarbons
    • Industrial Point Sources

42908 Acres

2006

2019
    This listing is being addressed through Lahontan Water Board Cleanup and Abatement Orders 6-00-64, 6-00-64A1 and 6-00-64A2.


Region 6

Snowshoe Thompson Ditch 1

River & Stream

8632.200000,8633.100003  /  16050201
  • Phosphorus
    • Agriculture-animal

1.3 Miles

2012

2025
  • Total Kjeldahl Nitrogen (TKN)
    • A Source Unknown

1.3 Miles

2012

2025


Region 9

Mission Bay Shoreline, at Enchanted Cove

Coastal & Bay Shoreline

90752000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Coronado HA, at G Ave, Central Beach

Coastal & Bay Shoreline

91010000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Los Monos HSA, Carlsbad State Beach at Tamarack Ave

Coastal & Bay Shoreline

4904.100000,4904.210000,4904.310000,4904.400000,4904.510000  /  18070303
  • Trash
    • A Source Unknown

0.5 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Mission San Diego HSA, at Ocean Beach pier at Narrangaset

Coastal & Bay Shoreline

4906.300000,4906.600000,4906.700000,4906.800000,4907.110000,4908.100000,4908.210000,4912.000000  /  18070304
  • Trash
    • A Source Unknown

0.53 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Point Loma HA, at Sunset Cliffs and Froude Street

Coastal & Bay Shoreline

90810000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park

Coastal & Bay Shoreline

90511000  /  18070304
  • Trash
    • A Source Unknown

0.74 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, San Elijo HSA, at Cardiff State Beach at parking lot entrance

Coastal & Bay Shoreline

90461000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, San Luis Rey HU, Oceanside Pier at Pier View Way

Coastal & Bay Shoreline

4903.110000,4904.100000  /  18070303
  • Trash
    • A Source Unknown

0.31 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Scripps HA, at Belmont Park at Mission Beach (near San Fernando Place)

Coastal & Bay Shoreline

90751000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Scripps HA, at Crystal Pier

Coastal & Bay Shoreline

90630000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Scripps HA, at North Lane at Windansea Beach

Coastal & Bay Shoreline

90630000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Scripps HA, at Pacific Beach Drive, Pacific Beach

Coastal & Bay Shoreline

90630000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Scripps HA, at Tourmaline Surf Park, Pacific Beach

Coastal & Bay Shoreline

90630000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Scripps HA, at Vallecitos Court at La Jolla Shores Beach

Coastal & Bay Shoreline

4906.100000,4906.300000  /  18070304
  • Trash
    • A Source Unknown

0.19 Miles

2014

2029


Region 9

Pacific Ocean Shoreline, Torrey Pines State Beach, at North Beach Entrance parking lot

Coastal & Bay Shoreline

90610000  /  18070304
  • Trash
    • A Source Unknown

0.03 Miles

2014

2029


Region 9

San Diego Bay Shoreline, between Sampson and 28th Streets

Bay & Harbor

90822000  /  18070304
  • Copper
    • Nonpoint Source
    • Point Source

53 Acres

1992

2015
  • Mercury
    • Major Industrial Point Source

53 Acres

1990

2013
  • PAHs (Polycyclic Aromatic Hydrocarbons)
    • Nonpoint Source
    • Point Source

53 Acres

1992

2013
  • PCBs (Polychlorinated biphenyls)
    • Major Industrial Point Source
    • Unknown Nonpoint Source
    • Unknown Point Source
    • Urban Runoff/Storm Sewers

53 Acres

1990

2013
  • Zinc
    • A Source Unknown
    • Unknown Nonpoint Source
    • Unknown Point Source

53 Acres

1990

2013


Region 9

Santa Margarita Lagoon

Estuary

90211000  /  18070302
  • Eutrophic
    • Agriculture-storm runoff

28 Acres

1986

2027