Region
California
San Joaquin Valley
5
Monterey County
4
Sacramento Valley
3
Barstow Region
2
Feather River Region
2
Fresno County
2
Honcut Creek Region
2
Merced River Valley
2
Salinas River Valley
2
San Joaquin River Watershed
2
Searles Valley
2
Sierra Nevada (Calif. and Nev.)
2
Yuba River Region
2
Alameda County
1
California, Southern
1
Fort Irwin
1
Franciscan Complex (Calif.)
1
Hector region
1
Los Angeles Basin
1
Los Angeles County
1
Puente Hills
1
Ridge Basin
1
Santa Maria Basin
1
Ventura Basin
1