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On This Page 303(d) Listed Waters for 2010

Data are also available for these cycles:
2002 2004 2006

Waterbody Changes from Prior Cycle

For More Information:

State Water Quality Program Exit EPA Disclaimer

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California Water Quality Assessment Report

Assessed Waters of California by Watershed

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Search for a waterbody within California
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Display impaired waters and TMDL information only



Site-specific Targeted Monitoring Summary Results

California (2010)

Description of this table
 
    3,495.1 27.8 .4 74.4 61.9 .0
      
   
                                    
                                    
                                    
                                    
    29,874.6 1,280.1 894.9 103.1 41.9 219.2
           10,072.0     106.1     2.6     25.7          
           51.7     109.3     .3               
                                    
           19,750.9     1,064.8     892.0     77.4     41.9     219.2
              172.2     134.9     .4     34.6     .0     .0
                    19,578.6           929.9           891.6           42.8           41.9           219.2
33,369.6 1,308.0 895.4 177.5 103.8 219.2
211,513.0 2,086,230.0 2,139.0 Unavailable Unavailable 357,064.0
15.8 .1 41.9 Unavailable Unavailable .1

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2010


Statewide Statistical Survey Summary Results

California Rivers and Streams 2010

Description of this table
Aquatic Life Use for
Rivers and Streams
Fully Supporting 20,031.8
Not Supporting 20,166.1
Total Assessed: 40,197.9

Statewide Statistical Survey Stressors

California Rivers and Streams 2010

No stressor data reported.

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Site-specific Targeted Monitoring Results

California Rivers and Streams 2010

Description of this table

All
Rivers and Streams

211,513.0 Miles of Rivers and Streams

Assessed 33,369.6
Unassessed 178,143.4
Total Miles 211,513.0







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Description of this table

Assessed
Rivers and Streams

33,369.6 Miles of
Assessed Rivers and Streams

Good 3,495.1
Threatened .0
Impaired 29,874.6
Total Miles Assessed 33,369.6







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Description of this table

Threatened and Impaired
Rivers and Streams

29,874.6 Miles of
Threatened and Impaired
Rivers and Streams

10,244.2
51.7
.0
19,578.6
Total Threatened and Impaired 29,874.6

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
California Rivers and Streams 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Agricultural Supply 2,229.6 29.1 .0 70.9 color.gifcolor.gif
Cold Freshwater Habitat 25,583.4 9.5 .0 90.5 color.gifcolor.gif
Commercial And Sport Fishing 3,849.7 11.4 .0 88.6 color.gifcolor.gif
Estuarine Habitat 28.5 .0 .0 100.0 color.gif
Freshwater Replenishment 123.2 100.0 .0 .0 color.gif
Ground Water Recharge 63.8 39.9 .0 60.1 color.gifcolor.gif
Industrial Service Supply 6.4 .0 .0 100.0 color.gif
Inland Saline Water Habitat 67.3 .0 .0 100.0 color.gif
Limited Warm Freshwater Habitat 9.6 100.0 .0 .0 color.gif
Migration Of Aquatic Organisms 216.4 .0 .0 100.0 color.gif
Municipal And Domestic Supply 23,340.8 79.4 .0 20.6 color.gifcolor.gif
Non-Contact Water Recreation 2,645.3 50.6 .0 49.4 color.gifcolor.gif
Rare, Threatened, Or Endangered Species 627.5 95.8 .0 4.2 color.gifcolor.gif
Shellfish Harvesting 23.6 .0 .0 100.0 color.gif
Spawning, Reproduction, And/Or Early Development 256.2 34.2 .0 65.8 color.gifcolor.gif
Warm Freshwater Habitat 8,905.4 30.2 .0 69.8 color.gifcolor.gif
Water Contact Recreation 11,097.0 45.0 .0 55.0 color.gifcolor.gif
Wetland Habitat 253.0 .0 .0 100.0 color.gif
Wildlife Habitat 479.2 30.3 .0 69.7 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Rivers and Streams 2010

Description of this table
Temperature, Water Temperature color.gif 17,140.5
Sedimentation/Siltation Sediment color.gif 16,611.2
Nutrients Nutrients color.gif 4,137.2
Organic Enrichment/Low Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 3,519.6
Aluminum Metals (other than Mercury) color.gif 3,110.9
Unknown Toxicity Total Toxics color.gif 2,319.6
Sediment Sediment color.gif 2,237.0
Cyanobacteria Hepatotoxic Microcystins Biotoxins color.gif 2,066.0
DDT Pesticides color.gif 1,839.6
Polychlorinated Biphenyls (PCBs) Polychlorinated Biphenyls (PCBs) color.gif 1,783.0
Mercury Mercury color.gif 1,779.7
Selenium Metals (other than Mercury) color.gif 1,778.9
Dieldrin Pesticides color.gif 1,768.4
Toxaphene Pesticides color.gif 1,605.6
Escherichia Coli (E. Coli) Pathogens color.gif 1,603.5
Chlorpyrifos Pesticides color.gif 1,575.3
Diazinon Pesticides color.gif 1,525.6
Chlordane Pesticides color.gif 1,515.1
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 1,396.8
Fecal Coliform Pathogens color.gif 1,347.6
Endosulfan Pesticides color.gif 1,334.7
pH pH/Acidity/Caustic Conditions color.gif 1,179.6
Turbidity Turbidity color.gif 1,140.9
Indicator Bacteria Pathogens color.gif 859.2
Chloride Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 802.1
Boron Toxic Inorganics color.gif 745.7
Total Dissolved Solids (TDS) Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 646.0
Sodium Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 618.5
Pathogens Pathogens color.gif 606.3
Toxicity Total Toxics color.gif 606.0
Sediment Toxicity Total Toxics color.gif 545.0
Trash Trash color.gif 513.7
Copper Metals (other than Mercury) color.gif 500.7
Conductivity Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 467.9
Phosphorus Nutrients color.gif 449.8
Group A Pesticides Pesticides color.gif 405.3
Nitrate Nutrients color.gif 387.7
Enterococcus Bacteria Pathogens color.gif 288.5
Coliforms Pathogens color.gif 268.9
Nitrogen Nutrients color.gif 251.7
Total Nitrogen as N Nutrients color.gif 249.6
Ammonia Ammonia color.gif 215.9
Lead Metals (other than Mercury) color.gif 215.4
Sulfates Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 190.9
Pesticides Pesticides color.gif 188.1
Salinity Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 166.3
Zinc Metals (other than Mercury) color.gif 165.8
Invasive Exotic Species Nuisance Exotic Species color.gif 158.7
Iron Metals (other than Mercury) color.gif 144.8
Ammonia, Un-ionized Ammonia color.gif 143.4
Manganese Metals (other than Mercury) color.gif 142.7
Pyrethroids Pesticides color.gif 142.5
DDE Pesticides color.gif 112.6
Diuron Pesticides color.gif 106.0
Arsenic Metals (other than Mercury) color.gif 92.7
Specific Conductivity Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 85.0
pH, High pH/Acidity/Caustic Conditions color.gif 75.7
Benthic Macroinvertebrates Bioassessments Cause Unknown - Impaired Biota color.gif 75.5
Hexachlorobenzene Pesticides color.gif 74.3
Chema Other Cause color.gif 66.3
DDD Pesticides color.gif 65.8
Nutrients - Algae Algal Growth color.gif 65.5
Cadmium Metals (other than Mercury) color.gif 62.9
Malathion Pesticides color.gif 61.9
Guthion(Azinphos-Methyl) Pesticides color.gif 61.1
Dimethoate Pesticides color.gif 55.4
Nitrate/Nitrite (Nitrite + Nitrate as N) Nutrients color.gif 52.8
Endrin Pesticides color.gif 51.0
Carbofuran Pesticides color.gif 49.3
Chlorophyll-A Algal Growth color.gif 48.6
DDT in Tissue Pesticides color.gif 44.1
Cyanide Toxic Inorganics color.gif 40.2
Chlordane in Fish Tissue Pesticides color.gif 39.1
Metals Metals (other than Mercury) color.gif 38.3
Alpha-BHC Pesticides color.gif 37.3
Molybdenum Metals (other than Mercury) color.gif 35.9
Nitrate as Nitrate (NO3) Nutrients color.gif 34.4
DDT in Tissue and Sediment Pesticides color.gif 30.0
Scum/Foam, Unnatural Other Cause color.gif 29.9
Pentachlorophenol (PCP) Toxic Organics color.gif 28.0
Simazine Pesticides color.gif 27.0
Phosphate Nutrients color.gif 26.0
Fish Barriers Habitat Alterations color.gif 26.0
Water Diversion Flow Alteration(s) color.gif 22.0
Pumping Flow Alteration(s) color.gif 22.0
Salinity/Total Dissolved Solids/Chlorides Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 21.1
Oil Oil and Grease color.gif 20.7
Algae Algal Growth color.gif 20.1
Trifluralin Pesticides color.gif 20.0
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 19.4
Oxyfluorfen Pesticides color.gif 19.3
Fluoride Toxic Inorganics color.gif 19.0
Nitrogen, Nitrite Nutrients color.gif 17.3
Organophosphorus Pesticides Pesticides color.gif 16.3
Ammonia Nitrogen Ammonia color.gif 16.0
DDT in Sediment Pesticides color.gif 15.3
Biochemical Oxygen Demand (BOD) Organic Enrichment/Oxygen Depletion color.gif 14.8
Nutrient/Eutrophication Biological Indicators Nutrients color.gif 14.5
Dieldrin in Tissue Pesticides color.gif 13.2
Aldicarb Pesticides color.gif 13.0
Disulfoton Pesticides color.gif 13.0
Nickel Metals (other than Mercury) color.gif 12.0
pH, Low pH/Acidity/Caustic Conditions color.gif 10.1
Lindane Pesticides color.gif 10.0
Prometryn Pesticides color.gif 9.9
Priority Organics Compounds Toxic Organics color.gif 9.2
Dichlorvos Pesticides color.gif 8.9
Acid Mine Drainage Other Cause color.gif 7.6
Total Coliform Pathogens color.gif 7.5
Chemical Oxygen Demand (COD) Organic Enrichment/Oxygen Depletion color.gif 7.0
Bifenthrin Pesticides color.gif 6.5
Contaminated Sediments (Cadmium) Metals (other than Mercury) color.gif 6.5
Viruses (Enteric) Pathogens color.gif 6.5
Silver Metals (other than Mercury) color.gif 6.3
Eutrophication Nutrients color.gif 6.2
Surfactants Other Cause color.gif 6.0
Solids Other Cause color.gif 6.0
Trace Elements Metals (other than Mercury) color.gif 6.0
Synthetic Organics Toxic Organics color.gif 6.0
Nitrogen, Nitrate Nutrients color.gif 5.7
Permethrin Pesticides color.gif 4.2
Bis(2 Ethylhexyl)Phthalate Toxic Organics color.gif 3.9
Benzo[b]fluoranthene Toxic Organics color.gif 3.6
Zinc, Dissolved Metals (other than Mercury) color.gif 3.4
Dioxin Dioxins color.gif 3.4
Contaminated Sediments (Lead) Metals (other than Mercury) color.gif 2.3
Shellfish Harvesting Advisory Fish Consumption Advisory color.gif 2.3
Contaminated Sediments (PAHs) Toxic Organics color.gif 2.3
Contaminated Sediments (Zinc) Metals (other than Mercury) color.gif 2.3
PCBs in Sediment and Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 2.3
Bacteria Pathogens color.gif 1.7
Total Suspended Solids (TSS) Turbidity color.gif 1.6

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Site-specific Targeted Monitoring Results

Probable Sources
California Rivers and Streams 2010

Description of this table
Loss Of Riparian Habitat Habitat Alterations (Not Directly Related To Hydromodification) color.gif 18,723.8
Non-Point Source Unspecified Nonpoint Source color.gif 16,853.3
Silviculture Activities Silviculture (Forestry) color.gif 15,582.6
Habitat Modification - Other Than Hydromodification Habitat Alterations (Not Directly Related To Hydromodification) color.gif 14,114.3
Post-Development Erosion And Sedimentation Hydromodification color.gif 13,618.5
Streambank Modifications/Destabilization Hydromodification color.gif 12,813.5
Natural Sources Natural/Wildlife color.gif 12,680.0
Source Unknown Unknown color.gif 12,264.5
Impacts From Hydrostructure Flow Regulation/Modification Hydromodification color.gif 11,209.6
Agriculture Agriculture color.gif 10,771.1
Forest Roads (Road Construction And Use) Silviculture (Forestry) color.gif 10,308.0
Drainage/Filling/Loss Of Wetlands Habitat Alterations (Not Directly Related To Hydromodification) color.gif 9,302.0
Channel Erosion/Incision From Upstream Hydromodifications Hydromodification color.gif 8,401.9
Subsurface (Hardrock) Mining Resource Extraction color.gif 7,457.6
Upstream Impoundments (E.G., Pl-566 Nrcs Structures) Hydromodification color.gif 6,439.2
Dam Construction (Other Than Upstream Flood Control Projects) Hydromodification color.gif 6,027.0
Livestock (Grazing Or Feeding Operations) Agriculture color.gif 5,901.7
Site Clearance (Land Development Or Redevelopment) Construction color.gif 5,837.8
Flow Alterations From Water Diversions Hydromodification color.gif 5,117.6
Grazing In Riparian Or Shoreline Zones Agriculture color.gif 4,160.0
Highways, Roads, Bridges, Infrastructure (New Construction) Construction color.gif 3,777.5
Rangeland Grazing Agriculture color.gif 3,678.0
Channelization Hydromodification color.gif 3,485.4
Specialty Crop Production Agriculture color.gif 3,362.9
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 3,100.7
Mine Tailings Resource Extraction color.gif 3,005.6
Irrigated Crop Production Agriculture color.gif 2,989.2
Sources Outside State Jurisdiction Or Borders Other color.gif 2,804.2
Highway/Road/Bridge Runoff (Non-Construction Related) Urban-Related Runoff/Stormwater color.gif 2,617.1
Internal Nutrient Recycling Natural/Wildlife color.gif 2,205.3
Industrial Point Source Discharge Industrial color.gif 2,192.2
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 2,141.5
Surface Mining Resource Extraction color.gif 1,943.0
Dredge Mining Resource Extraction color.gif 1,937.0
Managed Pasture Grazing Agriculture color.gif 1,896.5
Impacts From Land Application Of Wastes Land Application/Waste Sites/Tanks color.gif 1,431.8
Combined Sewer Overflows Municipal Discharges/Sewage color.gif 1,408.1
Unspecified Urban Stormwater Urban-Related Runoff/Stormwater color.gif 1,402.6
Crop Production With Subsurface Drainage Agriculture color.gif 1,385.5
Placer Mining Resource Extraction color.gif 993.0
Mill Tailings Industrial color.gif 915.4
Animal Feeding Operations (Nps) Agriculture color.gif 824.5
Dairies (Outside Milk Parlor Areas) Agriculture color.gif 821.1
Non-Irrigated Crop Production Agriculture color.gif 744.0
Impacts From Geothermal Development Resource Extraction color.gif 327.0
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 286.8
Illegal Dumping Spills/Dumping color.gif 285.3
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 223.7
Contaminated Groundwater Groundwater Loadings/Withdrawals color.gif 175.2
Unspecified Domestic Waste Municipal Discharges/Sewage color.gif 155.5
Other Recreational Pollution Sources Recreation And Tourism (Non-Boating) color.gif 148.9
Erosion From Derelict Land (Barren Land) Hydromodification color.gif 102.0
Baseflow Depletion From Groundwater Withdrawals Hydromodification color.gif 94.4
Golf Courses Recreation And Tourism (Non-Boating) color.gif 91.0
Inappropriate Waste Disposal Spills/Dumping color.gif 88.0
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 87.1
Industrial/Commercial Site Stormwater Discharge (Permitted) Urban-Related Runoff/Stormwater color.gif 51.8
Impacts From Resort Areas (Winter And Non-Winter Resorts) Recreation And Tourism (Non-Boating) color.gif 43.8
Manure Runoff Agriculture color.gif 38.0
Saltwater Intrusion From Groundwater Overdrafting Groundwater Loadings/Withdrawals color.gif 31.9
Septage Disposal Municipal Discharges/Sewage color.gif 26.6
Contaminated Sediments Legacy/Historical Pollutants color.gif 22.9
Petroleum/Natural Gas Activities Resource Extraction color.gif 21.7
Sediment Resuspension (Clean Sediment) Hydromodification color.gif 19.0
Acid Mine Drainage Resource Extraction color.gif 18.4
Dredging (E.G., For Navigation Channels) Hydromodification color.gif 14.1
Impacts From Abandoned Mine Lands (Inactive) Resource Extraction color.gif 13.3
Landfills Land Application/Waste Sites/Tanks color.gif 9.7
Pesticide Application Land Application/Waste Sites/Tanks color.gif 8.9
Unspecified Land Disturbance Other color.gif 8.6
Accidental Release/Spill Spills/Dumping color.gif 6.4
Other Marina/Boating On-Vessel Discharges Recreational Boating And Marinas color.gif 3.8
Crop Production (Crop Land Or Dry Land) Agriculture color.gif .2

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Site-specific Targeted Monitoring Results

California Lakes, Reservoirs, and Ponds 2010

Description of this table

All
Lakes, Reservoirs, and Ponds

2,086,230.0 Acres of Lakes, Reservoirs, and Ponds

Assessed 1,308.0
Unassessed 2,084,922.0
Total Acres 2,086,230.0







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Description of this table

Assessed
Lakes, Reservoirs, and Ponds

1,308.0 Acres of
Assessed Lakes, Reservoirs, and Ponds

Good 27.8
Threatened .0
Impaired 1,280.1
Total Acres Assessed 1,308.0







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Description of this table

Threatened and Impaired
Lakes, Reservoirs, and Ponds

1,280.1 Acres of
Threatened and Impaired
Lakes, Reservoirs, and Ponds

241.0
109.3
.0
929.9
Total Threatened and Impaired 1,280.1

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
California Lakes, Reservoirs, and Ponds 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Agricultural Supply 90.6 .2 .0 99.8 color.gifcolor.gif
Cold Freshwater Habitat 265.8 17.4 .0 82.6 color.gifcolor.gif
Commercial And Sport Fishing 1,023.6 19.8 .0 80.2 color.gifcolor.gif
Estuarine Habitat .3 .0 .0 100.0 color.gif
Ground Water Recharge .1 .0 .0 100.0 color.gif
Inland Saline Water Habitat 62.1 .0 .0 100.0 color.gif
Municipal And Domestic Supply 126.2 32.4 .0 67.6 color.gifcolor.gif
Non-Contact Water Recreation 402.4 99.6 .0 .4 color.gifcolor.gif
Preservation Of Biological Habitats 42.2 .0 .0 100.0 color.gif
Shellfish Harvesting .0 .0 .0 100.0 color.gif
Warm Freshwater Habitat 458.7 11.2 .0 88.8 color.gifcolor.gif
Water Contact Recreation 529.0 12.4 .0 87.6 color.gifcolor.gif
Wildlife Habitat 47.4 .0 .0 100.0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Lakes, Reservoirs, and Ponds 2010

Description of this table
Arsenic Metals (other than Mercury) color.gif 454.8
Mercury Mercury color.gif 449.1
Nutrients Nutrients color.gif 436.4
DDT Pesticides color.gif 365.1
Chlorpyrifos Pesticides color.gif 364.8
Salinity Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 364.6
Selenium Metals (other than Mercury) color.gif 364.6
Enterococcus Bacteria Pathogens color.gif 364.6
Salinity/Total Dissolved Solids/Chlorides Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 200.6
Phosphorus Nutrients color.gif 174.2
Nitrogen Nutrients color.gif 173.4
Sedimentation/Siltation Sediment color.gif 137.5
Petroleum Hydrocarbons Oil and Grease color.gif 47.2
pH, High pH/Acidity/Caustic Conditions color.gif 45.9
Polychlorinated Biphenyls (PCBs) Polychlorinated Biphenyls (PCBs) color.gif 44.6
pH pH/Acidity/Caustic Conditions color.gif 25.6
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 25.1
Copper Metals (other than Mercury) color.gif 14.6
Zinc Metals (other than Mercury) color.gif 11.8
Metals Metals (other than Mercury) color.gif 10.0
Ammonia Ammonia color.gif 9.8
Color Taste, Color and Odor color.gif 8.5
Manganese Metals (other than Mercury) color.gif 7.7
Organic Enrichment/Low Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 5.4
Total Nitrogen as N Nutrients color.gif 5.2
Noxious Aquatic Plants Noxious Aquatic Plants color.gif 4.5
Ammonia, Un-ionized Ammonia color.gif 4.1
Unknown Toxicity Total Toxics color.gif 4.0
Sediment Toxicity Total Toxics color.gif 3.8
Cyanobacteria Hepatotoxic Microcystins Biotoxins color.gif 3.1
Iron Metals (other than Mercury) color.gif 2.5
Dieldrin Pesticides color.gif 1.9
Chlordane Pesticides color.gif 1.8
Turbidity Turbidity color.gif 1.7
Chloride Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 1.7
Sulfates Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 1.7
Priority Organics Compounds Toxic Organics color.gif 1.3
Heptachlor Epoxide Pesticides color.gif 1.2
Toxaphene Pesticides color.gif 1.2
Trace Elements Metals (other than Mercury) color.gif 1.0
Eutrophication Nutrients color.gif .9
Pathogens Pathogens color.gif .9
Trash Trash color.gif .8
Aluminum Metals (other than Mercury) color.gif .7
Algae Algal Growth color.gif .7
Mercury in Fish Tissue Mercury color.gif .6
Chlordane in Fish Tissue Pesticides color.gif .6
DDT in Tissue Pesticides color.gif .6
Lead Metals (other than Mercury) color.gif .5
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif .5
Odors Taste, Color and Odor color.gif .4
Diazinon Pesticides color.gif .3
Cadmium Metals (other than Mercury) color.gif .2
Perchlorate Toxic Inorganics color.gif .2
Ammonia Nitrogen Ammonia color.gif .2
Fish Barriers Habitat Alterations color.gif .2
Chlorophyll-A Algal Growth color.gif .2
Scum/Foam, Unnatural Other Cause color.gif .2
Nitrate Nutrients color.gif .1
Escherichia Coli (E. Coli) Pathogens color.gif .1
Chema Other Cause color.gif .1
Dieldrin in Tissue Pesticides color.gif .1
Fecal Coliform Pathogens color.gif .1
Dimethoate Pesticides color.gif .0
Total Coliform Pathogens color.gif .0
Fish Kill(s) Cause Unknown - Fish Kills color.gif .0
Contaminated Sediments (Chlordane) Pesticides color.gif .0
DDT in Sediment Pesticides color.gif .0
Contaminated Sediments (PCBs) Polychlorinated Biphenyls (PCBs) color.gif .0
Dieldrin in Sediment Pesticides color.gif .0
Specific Conductivity Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif .0

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Site-specific Targeted Monitoring Results

Probable Sources
California Lakes, Reservoirs, and Ponds 2010

Description of this table
Source Unknown Unknown color.gif 670.6
Agriculture Agriculture color.gif 556.6
Industrial Point Source Discharge Industrial color.gif 411.8
Natural Sources Natural/Wildlife color.gif 371.1
Sources Outside State Jurisdiction Or Borders Other color.gif 364.6
Subsurface (Hardrock) Mining Resource Extraction color.gif 352.1
Non-Point Source Unspecified Nonpoint Source color.gif 328.7
Impacts From Hydrostructure Flow Regulation/Modification Hydromodification color.gif 293.1
Sediment Resuspension (Clean Sediment) Hydromodification color.gif 260.1
Livestock (Grazing Or Feeding Operations) Agriculture color.gif 234.5
Internal Nutrient Recycling Natural/Wildlife color.gif 215.2
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 205.0
Post-Development Erosion And Sedimentation Hydromodification color.gif 200.3
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 198.6
Unspecified Urban Stormwater Urban-Related Runoff/Stormwater color.gif 172.3
Other Recreational Pollution Sources Recreation And Tourism (Non-Boating) color.gif 170.2
Highway/Road/Bridge Runoff (Non-Construction Related) Urban-Related Runoff/Stormwater color.gif 169.9
Other Marina/Boating On-Vessel Discharges Recreational Boating And Marinas color.gif 169.8
Silviculture Activities Silviculture (Forestry) color.gif 165.7
Site Clearance (Land Development Or Redevelopment) Construction color.gif 137.9
Loss Of Riparian Habitat Habitat Alterations (Not Directly Related To Hydromodification) color.gif 137.5
Channel Erosion/Incision From Upstream Hydromodifications Hydromodification color.gif 137.5
Streambank Modifications/Destabilization Hydromodification color.gif 137.5
Highways, Roads, Bridges, Infrastructure (New Construction) Construction color.gif 137.5
Habitat Modification - Other Than Hydromodification Habitat Alterations (Not Directly Related To Hydromodification) color.gif 136.3
Drainage/Filling/Loss Of Wetlands Habitat Alterations (Not Directly Related To Hydromodification) color.gif 136.3
Golf Courses Recreation And Tourism (Non-Boating) color.gif 133.9
Contaminated Groundwater Groundwater Loadings/Withdrawals color.gif 133.8
Channelization Hydromodification color.gif 133.4
Flow Alterations From Water Diversions Hydromodification color.gif 91.9
Impacts From Geothermal Development Resource Extraction color.gif 91.3
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 32.8
Inappropriate Waste Disposal Spills/Dumping color.gif 32.6
Surface Mining Resource Extraction color.gif 9.8
Impacts From Resort Areas (Winter And Non-Winter Resorts) Recreation And Tourism (Non-Boating) color.gif 4.5
Managed Pasture Grazing Agriculture color.gif 4.3
Impacts From Land Application Of Wastes Land Application/Waste Sites/Tanks color.gif 4.1
Impacts From Abandoned Mine Lands (Inactive) Resource Extraction color.gif 3.1
Dam Construction (Other Than Upstream Flood Control Projects) Hydromodification color.gif 3.1
Dairies (Outside Milk Parlor Areas) Agriculture color.gif 1.7
Specialty Crop Production Agriculture color.gif 1.2
Mine Tailings Resource Extraction color.gif .7
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif .3
Irrigated Crop Production Agriculture color.gif .3
Septage Disposal Municipal Discharges/Sewage color.gif .2
Industrial/Commercial Site Stormwater Discharge (Permitted) Urban-Related Runoff/Stormwater color.gif .1
Landfills Land Application/Waste Sites/Tanks color.gif .0

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Site-specific Targeted Monitoring Results

California Bays and Estuaries 2010

Description of this table

All
Bays and Estuaries

2,139.0 Square Miles of Bays and Estuaries

Assessed 895.4
Unassessed 1,243.6
Total Square Miles 2,139.0







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Description of this table

Assessed
Bays and Estuaries

895.4 Square Miles of
Assessed Bays and Estuaries

Good .4
Threatened .0
Impaired 894.9
Total Square Miles Assessed 895.4







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Description of this table

Threatened and Impaired
Bays and Estuaries

894.9 Square Miles of
Threatened and Impaired
Bays and Estuaries

3.0
.3
.0
891.6
Total Threatened and Impaired 894.9

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
California Bays and Estuaries 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Agricultural Supply 32.5 .0 .0 100.0 color.gif
Cold Freshwater Habitat 8.0 1.5 .0 98.5 color.gifcolor.gif
Commercial And Sport Fishing 881.8 .3 .0 99.7 color.gifcolor.gif
Cultural/Traditional Rights 25.1 100.0 .0 .0 color.gif
Estuarine Habitat 537.9 3.1 .0 96.9 color.gifcolor.gif
Industrial Service Supply .0 .0 .0 100.0 color.gif
Marine Habitat 290.5 8.8 .0 91.2 color.gifcolor.gif
Municipal And Domestic Supply 10.6 .0 .0 100.0 color.gif
Non-Contact Water Recreation 489.8 .0 .0 100.0 color.gifcolor.gif
Shellfish Harvesting 31.0 88.9 .0 11.1 color.gifcolor.gif
Warm Freshwater Habitat 79.4 .1 .0 99.9 color.gifcolor.gif
Water Contact Recreation 64.9 39.5 .0 60.5 color.gifcolor.gif
Wetland Habitat .0 .0 .0 100.0 color.gif
Wildlife Habitat 255.1 .0 .0 100.0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Bays and Estuaries 2010

Description of this table
Mercury Mercury color.gif 577.1
Polychlorinated Biphenyls (PCBs) Polychlorinated Biphenyls (PCBs) color.gif 575.7
DDT Pesticides color.gif 575.6
Invasive Exotic Species Nuisance Exotic Species color.gif 564.1
Chlordane Pesticides color.gif 520.9
Dieldrin Pesticides color.gif 506.0
Furan Compounds Dioxins color.gif 497.2
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 494.7
PCBs - Dioxin-like Polychlorinated Biphenyls (PCBs) color.gif 493.8
Selenium Metals (other than Mercury) color.gif 345.8
Sediment Toxicity Total Toxics color.gif 258.7
Trash Trash color.gif 257.5
DDT in Tissue and Sediment Pesticides color.gif 242.7
PCBs in Sediment and Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 229.8
Fish Consumption Advisory Fish Consumption Advisory color.gif 229.7
Debris Other Cause color.gif 229.1
Diazinon Pesticides color.gif 70.0
Chlorpyrifos Pesticides color.gif 68.3
Unknown Toxicity Total Toxics color.gif 68.1
Group A Pesticides Pesticides color.gif 68.1
Conductivity Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 32.5
Dioxin Dioxins color.gif 27.6
Sedimentation/Siltation Sediment color.gif 23.6
Pathogens Pathogens color.gif 19.7
Nutrients Nutrients color.gif 16.8
Copper Metals (other than Mercury) color.gif 9.4
Pesticides Pesticides color.gif 8.9
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 8.5
Indicator Bacteria Pathogens color.gif 6.8
Zinc Metals (other than Mercury) color.gif 5.7
Benthic Macroinvertebrates Bioassessments Cause Unknown - Impaired Biota color.gif 5.3
Benzo[a]pyrene (PAHs) Toxic Organics color.gif 5.2
Chrysene Toxic Organics color.gif 5.1
Beach Closures Pathogens color.gif 4.7
Coliforms Pathogens color.gif 4.7
Nickel Metals (other than Mercury) color.gif 3.7
pH pH/Acidity/Caustic Conditions color.gif 3.5
Total Coliform Pathogens color.gif 3.5
Eutrophication Nutrients color.gif 3.1
Lead Metals (other than Mercury) color.gif 2.8
Organic Enrichment/Low Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 2.8
Turbidity Turbidity color.gif 2.1
Thallium Metals (other than Mercury) color.gif 2.1
Contaminated Sediments (Zinc) Metals (other than Mercury) color.gif 1.8
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 1.6
Contaminated Sediments (Lead) Metals (other than Mercury) color.gif 1.6
Dieldrin in Tissue Pesticides color.gif 1.5
Chlordane in Fish Tissue Pesticides color.gif 1.4
Contaminated Sediments (PAHs) Toxic Organics color.gif 1.2
Mercury in Sediment Mercury color.gif 1.2
Metals Metals (other than Mercury) color.gif 1.1
DDT in Tissue Pesticides color.gif .7
Toxaphene Pesticides color.gif .7
Contaminated Sediments (Copper) Metals (other than Mercury) color.gif .7
Priority Organics Compounds Toxic Organics color.gif .6
Nitrogen Nutrients color.gif .5
Endosulfan Pesticides color.gif .5
Phenanthrene Toxic Organics color.gif .4
Pyrene Toxic Organics color.gif .4
Benzo[a]anthracene Toxic Organics color.gif .4
Contaminated Sediments (Chlordane) Pesticides color.gif .4
Contaminated Sediments (PCBs) Polychlorinated Biphenyls (PCBs) color.gif .3
DDT in Sediment Pesticides color.gif .3
Ammonia Ammonia color.gif .3
Toxicity Total Toxics color.gif .3
Polycyclic Aromatic Hydrocarbons (PAHS) Toxic Organics color.gif .2
Dieldrin in Sediment Pesticides color.gif .2
Dibenz[a,h]anthracene Toxic Organics color.gif .1
Selenium in Sediment Metals (other than Mercury) color.gif .1
Escherichia Coli (E. Coli) Pathogens color.gif .1
Ammonia, Un-ionized Ammonia color.gif .1
Hydrogen Sulfide Toxic Inorganics color.gif .1
Enterococcus Bacteria Pathogens color.gif .1
Chema Other Cause color.gif .1
Nitrogen, Nitrate Nutrients color.gif .1
Contaminated Sediments (Cadmium) Metals (other than Mercury) color.gif .1
Chromium in Sediments Metals (other than Mercury) color.gif .1
2-Methylnaphthalene Pesticides color.gif .1
Dacthal Pesticides color.gif .0
Viruses (Enteric) Pathogens color.gif .0
Swimming Restriction Pathogens color.gif .0
Contaminated Sediments (Silver) Metals (other than Mercury) color.gif .0
Fecal Coliform Pathogens color.gif .0

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Site-specific Targeted Monitoring Results

Probable Sources
California Bays and Estuaries 2010

Description of this table
Non-Point Source Unspecified Nonpoint Source color.gif 764.2
Subsurface (Hardrock) Mining Resource Extraction color.gif 565.9
Source Unknown Unknown color.gif 530.1
Industrial Point Source Discharge Industrial color.gif 516.2
Natural Sources Natural/Wildlife color.gif 502.1
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 495.1
Ballast Water Releases Commercial Harbor And Port Activities color.gif 494.7
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 457.7
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 340.9
Introduction Of Non-Native Organisms (Accidental Or Intentional) Other color.gif 322.6
Illegal Dumping Spills/Dumping color.gif 255.1
Agriculture Agriculture color.gif 91.3
Above Ground Storage Tank Leaks (Tank Farms) Spills/Dumping color.gif 25.1
Septage Disposal Municipal Discharges/Sewage color.gif 20.2
Baseflow Depletion From Groundwater Withdrawals Hydromodification color.gif 14.4
Mine Tailings Resource Extraction color.gif 13.4
Animal Feeding Operations (Nps) Agriculture color.gif 13.4
Upstream Impoundments (E.G., Pl-566 Nrcs Structures) Hydromodification color.gif 13.4
Channel Erosion/Incision From Upstream Hydromodifications Hydromodification color.gif 7.3
Contaminated Sediments Legacy/Historical Pollutants color.gif 6.9
Irrigated Crop Production Agriculture color.gif 6.4
Post-Development Erosion And Sedimentation Hydromodification color.gif 4.7
Site Clearance (Land Development Or Redevelopment) Construction color.gif 4.2
Marina/Boating Sanitary On-Vessel Discharges Recreational Boating And Marinas color.gif 4.0
Livestock (Grazing Or Feeding Operations) Agriculture color.gif 3.4
Rangeland Grazing Agriculture color.gif 3.3
Channelization Hydromodification color.gif 3.0
Other Recreational Pollution Sources Recreation And Tourism (Non-Boating) color.gif 2.5
Inappropriate Waste Disposal Spills/Dumping color.gif 2.1
Unspecified Urban Stormwater Urban-Related Runoff/Stormwater color.gif .9
Impacts From Hydrostructure Flow Regulation/Modification Hydromodification color.gif .5
Loss Of Riparian Habitat Habitat Alterations (Not Directly Related To Hydromodification) color.gif .4
Contaminated Groundwater Groundwater Loadings/Withdrawals color.gif .3
Grazing In Riparian Or Shoreline Zones Agriculture color.gif .3
Streambank Modifications/Destabilization Hydromodification color.gif .3
Manure Runoff Agriculture color.gif .3
Other Marina/Boating On-Vessel Discharges Recreational Boating And Marinas color.gif .3
Specialty Crop Production Agriculture color.gif .2
Marina Boat Maintenance Recreational Boating And Marinas color.gif .1
Dredging (E.G., For Navigation Channels) Hydromodification color.gif .1
Illegal Dumps Or Other Inappropriate Waste Disposal Spills/Dumping color.gif .1
Combined Sewer Overflows Municipal Discharges/Sewage color.gif .1
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif .0
Illicit Connections/Hook-Ups To Storm Sewers Municipal Discharges/Sewage color.gif .0
Golf Courses Recreation And Tourism (Non-Boating) color.gif .0
Accidental Release/Spill Spills/Dumping color.gif .0
Landfills Land Application/Waste Sites/Tanks color.gif .0
Highway/Road/Bridge Runoff (Non-Construction Related) Urban-Related Runoff/Stormwater color.gif .0
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif .0
Managed Pasture Grazing Agriculture color.gif .0
Unspecified Domestic Waste Municipal Discharges/Sewage color.gif .0

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Site-specific Targeted Monitoring Results

California Coastal Shoreline 2010

Description of this table
Pie chart not displayed because total size for Coastal Shoreline is unavailable.
Assessed 177.5
Unassessed Unavailable
Total Miles Unavailable







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Description of this table

Assessed
Coastal Shoreline

177.5 Miles of
Assessed Coastal Shoreline

Good 74.4
Threatened .0
Impaired 103.1
Total Miles Assessed 177.5







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Description of this table

Threatened and Impaired
Coastal Shoreline

103.1 Miles of
Threatened and Impaired
Coastal Shoreline

60.3
.0
.0
42.8
Total Threatened and Impaired 103.1

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
California Coastal Shoreline 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Commercial And Sport Fishing 43.1 .0 .0 100.0 color.gif
Estuarine Habitat .6 .0 .0 100.0 color.gif
Marine Habitat 2.6 .0 .0 100.0 color.gif
Shellfish Harvesting 10.6 56.0 .0 44.0 color.gifcolor.gif
Warm Freshwater Habitat 6.8 100.0 .0 .0 color.gif
Water Contact Recreation 166.3 46.4 .0 53.6 color.gifcolor.gif
Wildlife Habitat 11.9 100.0 .0 .0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Coastal Shoreline 2010

Description of this table
Indicator Bacteria Pathogens color.gif 60.3
Polychlorinated Biphenyls (PCBs) Polychlorinated Biphenyls (PCBs) color.gif 41.7
DDT Pesticides color.gif 34.3
Coliforms Pathogens color.gif 17.3
Total Coliform Pathogens color.gif 6.7
Fecal Coliform Pathogens color.gif 5.5
Enterococcus Bacteria Pathogens color.gif 3.4
Copper Metals (other than Mercury) color.gif 3.0
Nickel Metals (other than Mercury) color.gif 2.6
Dieldrin Pesticides color.gif 1.8
Beach Closures Pathogens color.gif 1.2
DDT in Sediment Pesticides color.gif 1.1
Mercury Mercury color.gif .6
Pesticides Pesticides color.gif .2
Pathogens Pathogens color.gif .2

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Site-specific Targeted Monitoring Results

Probable Sources
California Coastal Shoreline 2010

Description of this table
Non-Point Source Unspecified Nonpoint Source color.gif 72.9
Source Unknown Unknown color.gif 46.0
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 5.5
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 1.2
Natural Sources Natural/Wildlife color.gif .6
Unspecified Urban Stormwater Urban-Related Runoff/Stormwater color.gif .1
Agriculture Agriculture color.gif .1
Above Ground Storage Tank Leaks (Tank Farms) Spills/Dumping color.gif .1
Managed Pasture Grazing Agriculture color.gif .1
Animal Feeding Operations (Nps) Agriculture color.gif .0
Petroleum/Natural Gas Activities Resource Extraction color.gif .0
Other Recreational Pollution Sources Recreation And Tourism (Non-Boating) color.gif .0

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Site-specific Targeted Monitoring Results

California Ocean and Near Coastal 2010

Description of this table
Pie chart not displayed because total size for Ocean and Near Coastal is unavailable.
Assessed 103.8
Unassessed Unavailable
Total Square Miles Unavailable







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Description of this table

Assessed
Ocean and Near Coastal

103.8 Square Miles of
Assessed Ocean and Near Coastal

Good 61.9
Threatened .0
Impaired 41.9
Total Square Miles Assessed 103.8







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Description of this table

Threatened and Impaired
Ocean and Near Coastal

41.9 Square Miles of
Threatened and Impaired
Ocean and Near Coastal

.0
.0
.0
41.9
Total Threatened and Impaired 41.9

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
California Ocean and Near Coastal 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Shellfish Harvesting 103.8 59.6 .0 40.4 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Ocean and Near Coastal 2010

Description of this table
Dieldrin Pesticides color.gif 41.9

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Site-specific Targeted Monitoring Results

Probable Sources
California Ocean and Near Coastal 2010

Description of this table
Source Unknown Unknown color.gif 41.9

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Site-specific Targeted Monitoring Results

California Wetlands 2010

Description of this table

All
Wetlands

357,064.0 Acres of Wetlands

Assessed 219.2
Unassessed 356,844.8
Total Acres 357,064.0







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Description of this table

Assessed
Wetlands

219.2 Acres of
Assessed Wetlands

Good .0
Threatened .0
Impaired 219.2
Total Acres Assessed 219.2







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Description of this table

Threatened and Impaired
Wetlands

219.2 Acres of
Threatened and Impaired
Wetlands

.0
.0
.0
219.2
Total Threatened and Impaired 219.2

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
California Wetlands 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table
% Good
% Threatened
% Impaired
Agricultural Supply 12.4 .0 .0 100.0 color.gif
Cold Freshwater Habitat 97.8 .0 .0 100.0 color.gif
Commercial And Sport Fishing 4.8 .0 .0 100.0 color.gif
Estuarine Habitat 104.2 .0 .0 100.0 color.gif
Municipal And Domestic Supply .0 86.0 .0 14.0 color.gifcolor.gif
Non-Contact Water Recreation .0 .0 .0 100.0 color.gif
Shellfish Harvesting .0 .0 .0 100.0 color.gif
Warm Freshwater Habitat 13.0 .0 .0 100.0 color.gifcolor.gif
Water Contact Recreation .1 .0 .0 100.0 color.gif
Wetland Habitat .5 .0 .0 100.0 color.gif
Wildlife Habitat 4.8 .0 .0 100.0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Wetlands 2010

Description of this table
Mercury Mercury color.gif 108.4
Nutrients Nutrients color.gif 103.7
Organic Enrichment/Low Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 103.7
Salinity/Total Dissolved Solids/Chlorides Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 103.7
Metals Metals (other than Mercury) color.gif 97.8
Selenium Metals (other than Mercury) color.gif 17.2
Conductivity Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 12.4
Trash Trash color.gif .5
Hydromodification Flow Alteration(s) color.gif .5
Exotic Vegetation Nuisance Exotic Species color.gif .5
Reduced Tidal Flushing Flow Alteration(s) color.gif .5
Habitat Alterations Habitat Alterations color.gif .5
pH pH/Acidity/Caustic Conditions color.gif .1
Contaminated Sediments (Chlordane) Pesticides color.gif .0
Zinc Metals (other than Mercury) color.gif .0
Copper Metals (other than Mercury) color.gif .0
Ammonia Ammonia color.gif .0
Bis(2 Ethylhexyl)Phthalate Toxic Organics color.gif .0
Coliforms Pathogens color.gif .0
Lead Metals (other than Mercury) color.gif .0
Indicator Bacteria Pathogens color.gif .0
Contaminated Sediments (PAHs) Toxic Organics color.gif .0
Chlordane in Fish Tissue Pesticides color.gif .0
Contaminated Sediments (Lead) Metals (other than Mercury) color.gif .0
Contaminated Sediments (Zinc) Metals (other than Mercury) color.gif .0
Sediment Toxicity Total Toxics color.gif .0
DDT in Tissue Pesticides color.gif .0
Dieldrin in Tissue Pesticides color.gif .0
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif .0
Total Coliform Pathogens color.gif .0
Boron Toxic Inorganics color.gif .0
Arsenic Metals (other than Mercury) color.gif .0

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Site-specific Targeted Monitoring Results

Probable Sources
California Wetlands 2010

Description of this table
Agriculture Agriculture color.gif 115.0
Impacts From Hydrostructure Flow Regulation/Modification Hydromodification color.gif 103.7
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 103.7
Non-Point Source Unspecified Nonpoint Source color.gif 98.3
Natural Sources Natural/Wildlife color.gif 97.8
Impacts From Geothermal Development Resource Extraction color.gif 97.8
Source Unknown Unknown color.gif 17.3
Subsurface (Hardrock) Mining Resource Extraction color.gif 4.8
Baseflow Depletion From Groundwater Withdrawals Hydromodification color.gif 4.8

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California Causes of Impairment for Reporting Year 2010


Description of this table
NOTE: Click on the underlined Cause of Impairment Group to see a list of specific state causes of impairment making up the Cause of Impairment Group. See also Pollution categories summary document (PDF) (20 pp, 557K, About PDF) for brief, non-technical descriptions of general cause categories.
Size of Assessed Waters with Listed Causes of Impairment
Algal Growth 134.3 .8
Ammonia 375.3 14.1 .4 .0
Biotoxins 2,066.0 3.1
Cause Unknown - Fish Kills .0
Cause Unknown - Impaired Biota 75.5 5.3
Dioxins 3.4 522.3
Fish Consumption Advisory 2.3 229.7
Flow Alteration(s) 22.0 .5
Habitat Alterations 26.0 .2 .5
Mercury 1,779.7 449.7 577.2 .6 108.4
Metals (other than Mercury) 5,640.1 487.5 360.0 3.0 115.1
Noxious Aquatic Plants 4.5
Nuisance Exotic Species 158.7 564.1 .5
Nutrients 5,189.9 616.4 20.5 103.7
Oil and Grease 20.7 47.2
Organic Enrichment/Oxygen Depletion 4,938.2 30.5 11.3 103.7
Other Cause 109.8 .3 229.2
Pathogens 4,007.2 365.6 39.3 90.2 .1
Pesticides 4,097.9 367.5 829.1 35.6 41.9 .1
pH/Acidity/Caustic Conditions 1,265.3 71.6 3.5 .1
Polychlorinated Biphenyls (PCBs) 1,804.7 45.1 807.4 41.7 .0
Salinity/Total Dissolved Solids/Chlorides/Sulfates 1,848.2 566.9 32.5 116.1
Sediment 18,848.2 137.5 23.6
Taste, Color and Odor 8.9
Temperature 17,140.5
Total Toxics 3,159.0 4.0 327.1 .0
Toxic Inorganics 805.0 .2 .1 .0
Toxic Organics 52.9 1.3 7.1 .1
Trash 513.7 .8 257.5 .5
Turbidity 1,142.5 1.7 2.1

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California Probable Sources Contributing to Impairments
for Reporting Year 2010

Description of this table
NOTE: Click on the underlined Probable Source Group to see a list of specific state Probable Sources making up the Probable Source Group.
Size of Assessed Waters with Probable Sources of Impairments
Agriculture 16,865.5 696.2 91.7 .1 115.0
Atmospheric Deposition 223.7 198.6 495.1
Commercial Harbor And Port Activities 494.7
Construction 6,373.3 141.9 4.2
Groundwater Loadings/Withdrawals 207.1 133.8 .3
Habitat Alterations (Not Directly Related To Hydromodification) 18,894.1 140.4 .4
Hydromodification 19,075.2 389.9 35.5 108.4
Industrial 3,107.5 411.8 516.2
Land Application/Waste Sites/Tanks 1,450.3 4.1 .0
Legacy/Historical Pollutants 22.9 6.9
Municipal Discharges/Sewage 3,400.1 32.8 474.1 1.2
Natural/Wildlife 12,819.2 416.5 502.1 .6 97.8
Other 2,812.8 364.6 322.6
Recreation And Tourism (Non-Boating) 244.6 175.1 2.5 .0
Recreational Boating And Marinas 3.8 169.8 4.2
Resource Extraction 10,353.5 456.3 579.2 .0 102.6
Silviculture (Forestry) 15,582.6 165.7
Spills/Dumping 379.7 32.6 282.4 .1
Unknown 12,264.5 670.6 530.1 46.0 41.9 17.3
Unspecified Nonpoint Source 16,853.3 328.7 764.2 72.9 98.3
Urban-Related Runoff/Stormwater 5,338.4 243.7 341.1 5.6 103.7

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California TMDL Alternatives by Cause of Impairment 2010


Description of this table


NOTE: Click on the underlined "Number of TMDL Alternatives by Cause of Impairment " value to see a listing of those Causes of Impairment.
Pathogens color.gif 5 49    
Metals color.gif 3 9    
Ammonia color.gif 2 16    
Copper color.gif 2     0
Mercury color.gif 2     0
Polychlorinated Biphenyls (PCBs) color.gif 2     0
Salinity/Total Dissolved Solids/Chlorides color.gif 2   109  
Zinc color.gif 2     0
Chlordane color.gif 1     0
Contaminated Sediments (PAHs) color.gif 1     0
DDT in Tissue color.gif 1     0
Dacthal color.gif 1     0
Dieldrin color.gif 1     0
Dieldrin in Sediment color.gif 1     0
Mercury in Sediment color.gif 1     0
PCB(s) in Fish Tissue color.gif 1     0
Petroleum Hydrocarbons color.gif 1   47  
Polycyclic Aromatic Hydrocarbons (PAHS) color.gif 1     0
Selenium in Sediment color.gif 1     0
Total Nitrogen as N color.gif 1 7    

Total: 32 TMDL Alternatives

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California Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards

Description of this table
NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those previously 303(d)-listed waters now attaining all applicable water quality standards.
2011 color.gif 12 15

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California Causes of Impairment for 303(d) Listed Waters

Description of this table
NOTE: Click on a cause of impairment (e.g. pathogens) to see the specific state-reported causes that are grouped to make up this category. Click on the "Number of Causes of Impairment Reported" to see a list of waters with that cause of impairment.
Pathogens color.gif 526
Pesticides color.gif 437
Metals (other than Mercury) color.gif 293
Total Toxics color.gif 239
Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 183
Nutrients color.gif 179
Mercury color.gif 160
Organic Enrichment/Oxygen Depletion color.gif 116
Polychlorinated Biphenyls (PCBs) color.gif 116
pH/Acidity/Caustic Conditions color.gif 108
Sediment color.gif 71
Temperature color.gif 59
Trash color.gif 46
Turbidity color.gif 46
Ammonia color.gif 42
Toxic Organics color.gif 40
Toxic Inorganics color.gif 37
Nuisance Exotic Species color.gif 30
Dioxins color.gif 28
Cause Unknown - Impaired Biota color.gif 21
Algal Growth color.gif 18
Taste, Color and Odor color.gif 13
Other Cause color.gif 10
Flow Alteration(s) color.gif 6
Biotoxins color.gif 6
Habitat Alterations color.gif 5
Oil and Grease color.gif 2
Fish Consumption Advisory color.gif 2
Cause Unknown - Fish Kills color.gif 1

Total: 2,840 Causes of Impairment

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California Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

Description of this table
NOTE: Click on the underlined "Pollutant" value to see associated listed waters for which a TMDL was developed. Click on the underlined "Number of TMDLs" value to see a listing of those TMDLs for the pollutant.
Number of Causes of
Impairment Addressed
Fecal Coliform color.gif 146 150
Diazinon color.gif 107 143
Total Coliform color.gif 87 89
Enterococcus Bacteria color.gif 85 86
Chlorpyrifos color.gif 72 105
Trash color.gif 70 70
DDT color.gif 59 60
Polychlorinated Biphenyls (PCBs) color.gif 59 67
Escherichia Coli (E. Coli) color.gif 47 49
Sediment color.gif 47 52
Beach Closures color.gif 45 88
Copper color.gif 45 45
Lead color.gif 44 44
Toxicity color.gif 44 45
Chlordane color.gif 37 39
Coliforms color.gif 37 53
Nitrogen, Total color.gif 35 61
Dieldrin color.gif 34 35
Phosphorus, Total color.gif 34 60
Mercury color.gif 32 32
Zinc color.gif 32 32
Ammonia Nitrogen color.gif 30 71
Nitrate color.gif 29 45
Pathogens color.gif 29 32
Nitrate/Nitrite color.gif 28 50
Chloride color.gif 26 31
Selenium color.gif 22 22
Toxaphene color.gif 21 23
Ammonia color.gif 18 18
DDT in Sediment color.gif 18 18
Nitrogen color.gif 18 34
Temperature color.gif 17 18
Total PCBs color.gif 17 17
Phosphorus color.gif 15 30
4,4'-DDT color.gif 14 15
Contaminated Sediments (PCBs) color.gif 14 14
High Coliform Count color.gif 14 14
Sediment Toxicity color.gif 14 15
Nitrite color.gif 13 29
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems) color.gif 13 33
Contaminated Sediments (Copper) color.gif 11 11
Contaminated Sediments (PAHs) color.gif 11 31
Lead in Sediment color.gif 11 11
Zinc in Sediment color.gif 11 11
DDT in Tissue color.gif 10 10
Siltation color.gif 10 10
Total Dissolved Solids (TDS) color.gif 10 10
Biochemical Oxygen Demand (BOD) color.gif 9 16
Cadmium color.gif 9 10
Hexachlorocyclohexane (HCH) color.gif 9 9
Sulfates color.gif 9 9
Algae color.gif 8 10
Chema color.gif 8 8
Contaminated Sediments (Chlordane) color.gif 8 8
Methyl Mercury color.gif 8 8
Organic Enrichment/Low Dissolved Oxygen color.gif 7 7
Sedimentation/Siltation color.gif 7 9
Chlordane in Fish Tissue color.gif 6 6
Bacteria color.gif 5 7
Boron color.gif 5 5
Dieldrin in Sediment color.gif 5 5
Fecal Bacteria color.gif 5 8
PCB(s) in Fish Tissue color.gif 5 5
Chromium, Total color.gif 4 4
Nickel color.gif 4 4
Additive Toxicity color.gif 3 4
Chlordane in Sediments color.gif 3 3
Contaminated Sediments (Cadmium) color.gif 3 3
Dieldrin in Tissue color.gif 3 3
Mercury in Sediment color.gif 3 3
NH3 color.gif 3 3
Suspended Sediment color.gif 3 3
4,4'-DDD color.gif 2 3
4,4'-DDE color.gif 2 3
Dissolved Oxygen color.gif 2 2
Inorganic Nitrogen color.gif 2 2
Aluminum color.gif 1 1
Bifenthrin color.gif 1 1
Dacthal color.gif 1 1
Debris color.gif 1 1
Endosulfan color.gif 1 1
Exotic Vegetation color.gif 1 4
Fine Sediment color.gif 1 1
Nitrate as Nitrate (NO3) color.gif 1 2
Nitrates color.gif 1 2
Orthophosphorus color.gif 1 2
Salinity color.gif 1 1
Silver color.gif 1 1
Sodium color.gif 1 1
Total Suspended Solids (TSS) color.gif 1 1
Total Toxics color.gif 1 1
Total and Fecal Coliform color.gif 1 1
Toxic Impacts color.gif 1 1
Turbidity color.gif 1 1

Total: 1,810 TMDLs; 2,222 Causes of Impairment Addressed


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California Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.


Description of this table
NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
1998 color.gif 13 13
1999 color.gif 15