Pacific Southwest, Region 9
Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations
Summary of California’s 303(d) Listing Pollutant Trends »
Maps
2010 Integrated Report
- All Assessed Waters
See the map on the CA Water Resources site» 
On the CA Water Resources site, click the "Map" tab, then to the upper-right of the map click "Show only impaired ("303(d)-listed") waters"
Central Valley Additions
Media Contact
Nahal Mogharabi, US EPA
(415) 947-4307
(mogharabi.nahal@epa.gov)
Waters Added to California List
| Water Body | Pollutant |
|---|---|
| Merced River, Lower (McSwain Reservoir to San Joaquin River) | Temperature |
| Old River (San Joaquin River to Delta-Mendota Canal; in Delta Waterways, southern portion) | Electrical Conductivity |
| Total Dissolved Solids | |
| San Joaquin River (Bear Creek to Mud Slough) | Electrical Conductivity |
| San Joaquin River (Merced River to Tuolumne River) | Electrical Conductivity |
| Temperature | |
| San Joaquin River (Mud Slough to Merced River) | Electrical Conductivity |
| San Joaquin River (Stanislaus River to Delta Boundary) | Temperature |
| San Joaquin River (Tuolumne River to Stanislaus River) | Electrical Conductivity |
| Temperature | |
| Stanislaus River, Lower | Temperature |
| Tuolumne River, Lower (Don Pedro Reservoir to San Joaquin River) | Temperature |
| Carson River, East Fork | Total Dissolved Solids |
| Mammoth Creek (Headwaters to Twin Lakes outlet) | Total Dissolved Solids |
| Bolsa Chica Channel | Indicator Bacteria |
| Borrego Creek (from Irvine Blvd. to San Diego Creek Reach 2) | Indicator Bacteria |
| Cucamonga Creek Reach 1 (Valley Reach) | Lead |
| Goldenstar Creek | Indicator Bacteria |
| Morning Canyon Creek | Indicator Bacteria |
| Peters Canyon Channel | Indicator Bacteria |
| San Diego Creek Reach 2 | Indicator Bacteria |
| Santa Ana Delhi Channel | Indicator Bacteria |
| Santa Ana River Reach 2 | Indicator Bacteria |
| Santa Ana River Reach 3 | Lead |
| Santa Ana River Reach 6 | Copper |
| Lead | |
| Serrano Creek | Indicator Bacteria |
| Temescal Creek, Reach 6 (Elsinore Groundwater sub basin boundary to Lake Elsinore Outlet) | Indicator Bacteria |
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