2006 Section 303(d) List Fact Sheet for CALIFORNIA

Waters Listed by Waterbody Type
Waters Listed by Watershed
Causes of Impairment
Approved TMDLs by Pollutant
Approved TMDLs by Year
TMDL Document Search

Other Impaired Water 303(d) List Information
The most current report available is 2006
Data are also available for these years: 2004 1998

Click here to see metadata for this report.

List Status

PARTIAL APPROVAL/PARTIAL DISAPPROVAL by EPA on MAR-08-2007.

Waters Listed by Waterbody Type

Waterbody Type	Number of Waters on List
NOTE: Click on the underlined "Number of Waters on List" value to see a listing of those waters.
STREAM/CREEK/RIVER	392
COASTAL SHORELINES	110
LAKE/RESERVOIR/POND	85
BAYS AND HARBORS	54
ESTUARY	39
SALINE LAKES	4
WETLANDS, TIDAL	4
WETLANDS, FRESHWATER	3

Total Number of Impaired Waters Reported: 691

Waters Listed by Watershed

Watershed Name	Number of Waters on List	Percent of Reported
NOTE: Click on the underlined "Watershed Name" to view a Watershed report. Click on the underlined "Number of Waters on List" value to see a listing of those waters.
Alisal-Elkhorn Sloughs	2	.29
Aliso-San Onofre	5	.72
Big-Navarro-Garcia	6	.87
Bodega Bay	1	.14
Butte	1	.14
Calleguas	5	.72
Central Coastal	7	1.01
Cottonwood-Tijuana	1	.14
Crowley Lake	1	.14
Cuyama	1	.14
East Walker	5	.72
Estrella	1	.14
Gualala-Salmon	1	.14
Honey-Eagle Lakes	1	.14
Lake Tahoe	10	1.45
Los Angeles	3	.43
Lost	2	.29
Lower American	4	.58
Lower Bear	1	.14
Lower Calaveras-Mormon Slough	4	.58
Lower Cosumnes-Lower Mokelumne	3	.43
Lower Eel	1	.14
Lower Feather	2	.29
Lower Klamath	2	.29
Lower Pit	1	.14
Lower Sacramento	4	.58
Mad-Redwood	5	.72
Mattole	1	.14
Middle San Joaquin-Lower Chowchilla	7	1.01
Middle San Joaquin-Lower Merced-Lower Stanislaus	11	1.59
Newport Bay	2	.29
Not Reported	444	64.25
Pajaro	2	.29
Panoche-San Luis Reservoir	3	.43
Russian	14	2.03
Sacramento Headwaters	3	.43
Sacramento-Lower Cow-Lower Clear	2	.29
Sacramento-Lower Thomes	1	.14
Sacramento-Stone Corral	2	.29
Sacramento-Upper Clear	3	.43
Salinas	5	.72
Salmon	1	.14
Salton Sea	1	.14
San Diego	21	3.04
San Francisco Bay	7	1.01
San Francisco Coastal South	10	1.45
San Gabriel	2	.29
San Joaquin Delta	15	2.17
San Lorenzo-Soquel	11	1.59
San Luis Rey-Escondido	1	.14
San Pablo Bay	2	.29
San Pedro Channel Islands	1	.14
Santa Ana	1	.14
Santa Barbara Coastal	11	1.59
Santa Clara	4	.58
Santa Margarita	3	.43
Santa Maria	8	1.16
Santa Monica Bay	3	.43
Seal Beach	3	.43
Trinity	1	.14
Truckee	1	.14
Tulare-Buena Vista Lakes	1	.14
Upper Bear	5	.72
Upper Cache	1	.14
Upper Carson	1	.14
Upper Cow-Battle	4	.58
Upper Eel	1	.14
Upper Klamath	3	.43
Upper Merced	1	.14
Upper Putah	1	.14
Upper Stony	1	.14
Upper Tuolumne	2	.29
Upper Yuba	4	.58
Ventura	5	.72

Total Number of Impaired Waters Reported: 691

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Causes of Impairment

General Impairment Name	Cause of Impairment Reported	Percent of Reported
NOTE: Click on the underlined "Cause of Impairment Reported" value to see a listing of those waters with that cause of impairment. Click on the underlined "General Impairment Name" to see the detailed state-reported impairment names.
PESTICIDES	312	17.47
PATHOGENS	245	13.72
METALS (OTHER THAN MERCURY)	228	12.77
NUTRIENTS	140	7.84
SALINITY/TDS/SULFATES/CHLORIDES	103	5.77
PCBS	103	5.77
MERCURY	101	5.66
SEDIMENT	87	4.87
TOTAL TOXICITY	77	4.31
ORGANIC ENRICHMENT/OXYGEN DEPLETION	47	2.63
TOXIC ORGANICS	45	2.52
TEMPERATURE	37	2.07
TRASH	37	2.07
AMMONIA	33	1.85
DIOXINS	27	1.51
PH	27	1.51
TOXIC INORGANICS	24	1.34
NUISANCE EXOTIC SPECIES	24	1.34
OTHER CAUSE	20	1.12
ALGAL GROWTH	16	.90
TASTE, COLOR AND ODOR	15	.84
CAUSE UNKNOWN - IMPAIRED BIOTA	12	.67
TURBIDITY	8	.45
FLOW ALTERATION	6	.34
HABITAT ALTERATION	5	.28
FISH CONSUMPTION ADVISORY - POLLUTANT UNSPECIFIED	3	.17
OIL AND GREASE	2	.11
CAUSE UNKNOWN - FISH KILLS	1	.06
NOXIOUS AQUATIC PLANTS	1	.06

Total Number of Causes of Impairment Reported: 1,786

Cause of Impairment Priorities

Priority	Cause of Impairment Reported	Percent of Reported
NOTE: Click on the underlined "Cause of Impairment Reported" value to see a listing of those waters with that impairment priority.
NOT REPORTED	1786	100.00

Total Number of Causes of Impairment Reported: 1,786

Approved TMDLs by Pollutant since October 1, 1995

Pollutant	Number of TMDLs Approved	Percent of Reported
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 Approved" value to see a listing of those approved TMDLs for the pollutant. EPA is in the process of collecting TMDL information from the states. Because these efforts are on-going, there may be additional approved TMDLs that were not included in the listings below.
DIAZINON	88	8.99
TRASH	65	6.64
CHLORPYRIFOS	50	5.11
BEACH CLOSURES	46	4.70
SEDIMENT	44	4.49
COLIFORMS	41	4.19
TOXICITY	41	4.19
COPPER	32	3.27
LEAD	31	3.17
AMMONIA-NITROGEN	30	3.06
PATHOGENS	29	2.96
NITROGEN	28	2.86
PHOSPHORUS	25	2.55
SELENIUM	22	2.25
NITRATE/NITRITE	22	2.25
MERCURY	21	2.15
ZINC	19	1.94
NITRATE	18	1.84
TOXAPHENE	17	1.74
CHLORIDE	17	1.74
CHLORDANE	16	1.63
DIELDRIN	16	1.63
HIGH COLIFORM COUNT	14	1.43
NITRITE	13	1.33
CADMIUM	13	1.33
TEMPERATURE	12	1.23
DDT	11	1.12
PCBS	11	1.12
TOTAL DISSOLVED SOLIDS	10	1.02
SILTATION	10	1.02
DDT IN TISSUE	10	1.02
AMMONIA	10	1.02
HEXACHLOROCYCLOHEXANE (HCH)	9	.92
SULFATES	9	.92
CHEMA	8	.82
ALGAE	8	.82
SEDIMENT TOXICITY	8	.82
CHLORDANE (FISH TISSUE)	6	.61
BACTERIA	6	.61
ORGANIC ENRICHMENT/LOW DISSOLVED OXYGEN	5	.51
TOTAL PCBS	5	.51
CHROMIUM	5	.51
SILVER	5	.51
DDT (SEDIMENT)	5	.51
FECAL COLIFORM	5	.51
PCBS (FISH TISSUE)	5	.51
ENTEROCOCCUS BACTERIA	4	.41
TOTAL COLIFORM	4	.41
NICKEL	4	.41
DIELDRIN IN TISSUE	3	.31
CHLORDANE (SEDIMENT)	3	.31
BORON	3	.31
SUSPENDED SEDIMENT	3	.31
FECAL	2	.20
TOTAL PHOSPHORUS	2	.20
NH3	2	.20
TOTAL AND FECAL COLIFORM	2	.20
TOTAL NITROGEN	2	.20
BIOCHEMICAL OXYGEN DEMAND	2	.20
ORGANIC ENRICHMENT/LOW DO	2	.20
SEDIMENTATION/SILTATION	2	.20
INORGANIC NITROGEN	2	.20
SEDIMENT/SILTATION	2	.20
DISSOLVED OXYGEN	2	.20
NUTRIENTS	1	.10
DACTHAL	1	.10
TKN (TOTAL KJELDAHL NITROGEN)	1	.10
NITRATE AS NITRATE (NO3)	1	.10
CONDUCTIVITY	1	.10
ORTHOPHOSPHORUS	1	.10
TURBIDITY	1	.10
ALUMINUM	1	.10
PAHS	1	.10
NITRATES	1	.10
ENDOSULFAN	1	.10
PCBS	1	.10

Total Number of TMDLs Reported to EPA since October 1, 1995: 979

Approved TMDLS by EPA Fiscal Year (October 1 through September 30) since October 1, 1995

Fiscal Year	Number of TMDLs Approved	Percent Approved
1997	1	.10
1998	13	1.33
1999	20	2.04
2000	9	.92
2001	3	.31
2002	111	11.34
2003	151	15.42
2004	82	8.38
2005	32	3.27
2006	224	22.88
2007	152	15.53
2008	81	8.27
2009	80	8.17
2010	20	2.04

TMDL Document Search

Full Text Search of TMDL Documents is available here.

External Links

The following agencies may also have relevant environmental information:

U. S. Geological Survey Data
EPA Region 9 - Total Maximum Daily Load Program
California Environmental Protection Agency
California Natural Resources Agency