| ESU | State—counties |
|---|---|
| (1) California Coastal Chinook | CA—Humboldt, Trinity, Mendocino, Sonoma, Lake, Napa, Glenn, Colusa, and Tehama. |
| (2) Northern California Steelhead | CA—Humboldt, Trinity, Mendocino, Sonoma, Lake, Glenn, Colusa, and Tehama. |
| (3) Central California Coast Steelhead | CA—Lake, Mendocino, Sonoma, Napa, Marin, San Francisco, San Mateo, Santa Clara, Santa Cruz, Alameda, Contra Costa, and San Joaquin. |
| (4) South-Central Coast Steelhead | CA—Monterey, San Benito, Santa Clara, Santa Cruz, San Luis Obispo. |
| (5) Southern California Steelhead | CA—San Luis Obispo, Santa Barbara, Ventura, Los Angeles, Orange and San Diego. |
|
Code of Federal Regulations
362
|
|
| (6) Central Valley spring-run Chinook | CA—Tehama, Butte, Glenn, Shasta, Yolo, Sacramento, Solano, Colusa, Yuba, Sutter, Trinity, Alameda, San Joaquin, and Contra Costa. |
| (7) Central Valley Steelhead | CA—Tehama, Butte, Glenn, Shasta, Yolo, Sacramento, Solona, Yuba, Sutter, Placer, Calaveras, San Joaquin, Stanislaus, Tuolumne, Merced, Alameda, Contra Costa. |