Place
- California, Northern21
- Humboldt County (Calif.)17
- Santa Clara County (Calif.)17
- San Francisco Bay Area (Calif.)14
- Sierra Nevada (Calif. and Nev.)14
- Alameda County (Calif.)13
- Contra Costa County (Calif.)13
- Marin County (Calif.)13
- Napa County (Calif.)13
- San Francisco County (Calif.)13
- San Mateo County (Calif.)13
- Solano County (Calif.)13
- Sonoma County (Calif.)13
- San Francisco Bay (Calif.)11
- Freshwater Creek (Calif.)5
- Santa Cruz County (Calif.)5
- California4
- Mendocino County (Calif.)3
- Africa2
- Albion River Watershed (Calif.)2