California Water Quality Assessment Report

Assessed Waters of California by Watershed

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Features

Site-specific Targeted Monitoring Summary Results

California (2010)

	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Coastal Shoreline (Miles)	Ocean and Near Coastal (Square Miles)	Wetlands (Acres)
	Size of Water
Good Waters	3,495.1	27.8	.4	74.4	61.9	.0
Previously impaired waters now attaining all uses
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	29,874.6	1,280.1	894.9	103.1	41.9	219.2
TMDL completed	10,072.0	106.1	2.6	25.7
TMDL alternative	51.7	109.3	.3
Non-pollutant impairment
TMDL needed	19,750.9	1,064.8	892.0	77.4	41.9	219.2
New TMDLs completed	128.0	134.9	.4	33.1	.0	.0
Remaining TMDLs needed	19,622.9	929.9	891.6	44.4	41.9	219.2

Total Assessed Waters	33,369.6	1,308.0	895.4	177.5	103.8	219.2
Total Waters	211,513.0	2,086,230.0	2,139.0	Unavailable	Unavailable	357,064.0
Percent of Waters Assessed	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

Attainment Category	Miles

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

Assessed Status	Miles

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

Description of this table

Attainment Status	Miles

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

Description of this table

TMDL Development Status	Miles

All TMDLs completed	10,200.0
TMDL alternative	51.7
Non-pollutant impairment	.0
TMDL needed	19,622.9
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

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

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Rivers and Streams 2010

Description of this table

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

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Site-specific Targeted Monitoring Results

Probable Sources
California Rivers and Streams 2010

Description of this table

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

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Site-specific Targeted Monitoring Results

California Lakes, Reservoirs, and Ponds 2010

Description of this table

Assessed Status	Acres

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

Description of this table

Attainment Status	Acres

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

Description of this table

TMDL Development Status	Acres

All TMDLs completed	241.0
TMDL alternative	109.3
Non-pollutant impairment	.0
TMDL needed	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

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

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Lakes, Reservoirs, and Ponds 2010

Description of this table

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

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Site-specific Targeted Monitoring Results

Probable Sources
California Lakes, Reservoirs, and Ponds 2010

Description of this table

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

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Site-specific Targeted Monitoring Results

California Bays and Estuaries 2010

Description of this table

Assessed Status	Square Miles

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

Description of this table

Attainment Status	Square Miles

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

Description of this table

TMDL Development Status	Square Miles

All TMDLs completed	3.0
TMDL alternative	.3
Non-pollutant impairment	.0
TMDL needed	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

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

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Bays and Estuaries 2010

Description of this table

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

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Site-specific Targeted Monitoring Results

Probable Sources
California Bays and Estuaries 2010

Description of this table

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

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Site-specific Targeted Monitoring Results

California Coastal Shoreline 2010

Description of this table

Assessed Status	Miles
Pie chart not displayed because total size for Coastal Shoreline is unavailable.
Assessed	177.5
Unassessed	Unavailable
Total Miles	Unavailable

Description of this table

Attainment Status	Miles

Good	74.4
Threatened	.0
Impaired	103.1
Total Miles Assessed	177.5

Description of this table

TMDL Development Status	Miles

All TMDLs completed	58.8
TMDL alternative	.0
Non-pollutant impairment	.0
TMDL needed	44.4
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

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Commercial And Sport Fishing	43.1	.0	.0	100.0
Estuarine Habitat	.6	.0	.0	100.0
Marine Habitat	2.6	.0	.0	100.0
Shellfish Harvesting	10.6	56.0	.0	44.0
Warm Freshwater Habitat	6.8	100.0	.0	.0
Water Contact Recreation	166.3	46.4	.0	53.6
Wildlife Habitat	11.9	100.0	.0	.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Coastal Shoreline 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Indicator Bacteria	Pathogens	60.3
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	41.7
DDT	Pesticides	34.3
Coliforms	Pathogens	17.3
Total Coliform	Pathogens	6.7
Fecal Coliform	Pathogens	5.5
Enterococcus Bacteria	Pathogens	3.4
Copper	Metals (other than Mercury)	3.0
Nickel	Metals (other than Mercury)	2.6
Dieldrin	Pesticides	1.8
Beach Closures	Pathogens	1.2
DDT in Sediment	Pesticides	1.1
Mercury	Mercury	.6
Pesticides	Pesticides	.2
Pathogens	Pathogens	.2

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Site-specific Targeted Monitoring Results

Probable Sources
California Coastal Shoreline 2010

Description of this table

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

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Site-specific Targeted Monitoring Results

California Ocean and Near Coastal 2010

Description of this table

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

Description of this table

Attainment Status	Square Miles

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

Description of this table

TMDL Development Status	Square Miles

All TMDLs completed	.0
TMDL alternative	.0
Non-pollutant impairment	.0
TMDL needed	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

Designated Use	Square Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Shellfish Harvesting	103.8	59.6	.0	40.4

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Ocean and Near Coastal 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
Dieldrin	Pesticides	41.9

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Site-specific Targeted Monitoring Results

Probable Sources
California Ocean and Near Coastal 2010

Description of this table

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Source Unknown	Unknown	41.9

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Site-specific Targeted Monitoring Results

California Wetlands 2010

Description of this table

Assessed Status	Acres

Assessed	219.2
Unassessed	356,844.8
Total Acres	357,064.0

Description of this table

Attainment Status	Acres

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

Description of this table

TMDL Development Status	Acres

All TMDLs completed	.0
TMDL alternative	.0
Non-pollutant impairment	.0
TMDL needed	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

Designated Use	Acres Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agricultural Supply	12.4	.0	.0	100.0
Cold Freshwater Habitat	97.8	.0	.0	100.0
Commercial And Sport Fishing	4.8	.0	.0	100.0
Estuarine Habitat	104.2	.0	.0	100.0
Municipal And Domestic Supply	.0	86.0	.0	14.0
Non-Contact Water Recreation	.0	.0	.0	100.0
Shellfish Harvesting	.0	.0	.0	100.0
Warm Freshwater Habitat	13.0	.0	.0	100.0
Water Contact Recreation	.1	.0	.0	100.0
Wetland Habitat	.5	.0	.0	100.0
Wildlife Habitat	4.8	.0	.0	100.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
California Wetlands 2010

Description of this table

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

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Site-specific Targeted Monitoring Results

Probable Sources
California Wetlands 2010

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Agriculture	Agriculture	115.0
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	103.7
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	103.7
Non-Point Source	Unspecified Nonpoint Source	98.3
Natural Sources	Natural/Wildlife	97.8
Impacts From Geothermal Development	Resource Extraction	97.8
Source Unknown	Unknown	17.3
Subsurface (Hardrock) Mining	Resource Extraction	4.8
Baseflow Depletion From Groundwater Withdrawals	Hydromodification	4.8

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California Causes of Impairment for Reporting Year 2010

Description of this table

Cause of Impairment Group	Size of Assessed Waters with Listed Causes of Impairment
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.
Cause of Impairment Group	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Coastal Shoreline (Miles)	Ocean and Near Coastal (Square Miles)	Wetlands (Acres)
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

Probable Source Group	Size of Assessed Waters with Probable Sources of Impairments
NOTE: Click on the underlined Probable Source Group to see a list of specific state Probable Sources making up the Probable Source Group.
Probable Source Group	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Coastal Shoreline (Miles)	Ocean and Near Coastal (Square Miles)	Wetlands (Acres)
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

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

Year Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
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	12	15

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California Causes of Impairment for 303(d) Listed Waters

Description of this table

Cause of Impairment Group Name	Number of Causes of Impairment Reported
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	526
Pesticides	437
Metals (other than Mercury)	293
Total Toxics	239
Salinity/Total Dissolved Solids/Chlorides/Sulfates	183
Nutrients	179
Mercury	160
Polychlorinated Biphenyls (PCBs)	116
Organic Enrichment/Oxygen Depletion	116
pH/Acidity/Caustic Conditions	108
Sediment	71
Temperature	59
Turbidity	46
Trash	46
Ammonia	42
Toxic Organics	40
Toxic Inorganics	37
Nuisance Exotic Species	30
Dioxins	28
Cause Unknown - Impaired Biota	21
Algal Growth	18
Taste, Color and Odor	13
Other Cause	10
Biotoxins	6
Flow Alteration(s)	6
Habitat Alterations	5
Fish Consumption Advisory	2
Oil and Grease	2
Cause Unknown - Fish Kills	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

Pollutant	Number of TMDLs	Number of Causes of Impairment Addressed
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.
Diazinon	104	140
Fecal Coliform	92	96
Chlorpyrifos	68	101
Trash	68	72
Polychlorinated Biphenyls (PCBs)	56	64
DDT	49	49
Sediment	47	54
Beach Closures	45	88
Copper	45	45
Lead	44	44
Escherichia Coli (E. Coli)	43	46
Toxicity	41	41
Coliforms	39	53
Chlordane	34	36
Dieldrin	34	35
Total Coliform	34	35
Enterococcus Bacteria	33	33
Mercury	32	32
Zinc	32	32
Ammonia Nitrogen	30	71
Pathogens	29	32
Nitrogen, Total	26	50
Chloride	25	30
Phosphorus, Total	25	49
Nitrate	24	40
Nitrate/Nitrite	22	42
Selenium	22	22
Toxaphene	20	22
DDT in Sediment	18	18
Nitrogen	18	34
Temperature	17	17
Total PCBs	17	17
Phosphorus	15	30
4,4'-DDT	14	15
Contaminated Sediments (PCBs)	14	14
High Coliform Count	14	14
Nitrite	13	29
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems)	13	33
Contaminated Sediments (Copper)	11	11
Contaminated Sediments (PAHs)	11	31
Lead in Sediment	11	11
Sediment Toxicity	11	11
Zinc in Sediment	11	11
Ammonia	10	10
DDT in Tissue	10	10
Siltation	10	10
Total Dissolved Solids (TDS)	10	10
Biochemical Oxygen Demand (BOD)	9	16
Cadmium	9	10
Hexachlorocyclohexane (HCH)	9	9
Sulfates	9	9
Algae	8	10
Chema	8	8
Contaminated Sediments (Chlordane)	8	8
Methyl Mercury	8	8
Organic Enrichment/Low Dissolved Oxygen	7	7
Chlordane in Fish Tissue	6	6
Bacteria	5	7
Dieldrin in Sediment	5	5
Fecal Bacteria	5	8
PCB(s) in Fish Tissue	5	5
Chromium, Total	4	4
Nickel	4	4
Sedimentation/Siltation	4	6
Boron	3	3
Chlordane in Sediments	3	3
Contaminated Sediments (Cadmium)	3	3
Dieldrin in Tissue	3	3
Mercury in Sediment	3	3
NH3	3	3
Suspended Sediment	3	3
4,4'-DDD	2	3
4,4'-DDE	2	3
Dissolved Oxygen	2	2
Inorganic Nitrogen	2	2
Aluminum	1	1
Bifenthrin	1	1
Conductivity	1	1
Dacthal	1	1
Debris	1	1
Endosulfan	1	1
Exotic Vegetation	1	4
Fine Sediment	1	1
Nitrate as Nitrate (NO3)	1	2
Nitrates	1	2
Orthophosphorus	1	2
Silver	1	1
Total Toxics	1	1
Total and Fecal Coliform	1	1
Turbidity	1	1

Total: 1,568 TMDLs; 1,972 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

Fiscal Year	Number of TMDLs	Number of Causes of Impairment Addressed
NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
1998	13	13
1999	15	15
2000	7	9
2001	4	4
2002	113	122
2003	148	241
2004	92	174
2005	30	35
2006	224	264
2007	142	144
2008	81	81
2009	80	87
2010	55	74
2011	114	129
2012	416	537
2013	34	43

Total: 1,568 TMDLs; 1,972 Causes of Impairment Addressed

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TMDL Document Search

Full Text Search of TMDL Documents

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