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Database information may change without notice. The Department of Conservation makes no warranties, expressed or implied, as to the suitability of the product for any particular purpose. Any use of this information is at the user’s own risk.

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Geothermal District Index

District G1: Alameda, Alpine, Amador, Butte, Calaveras, Colusa, Contra Costa, El Dorado, Fresno, Glenn, Kings, Lassen, Madera, Mariposa, Merced, Modoc, Mono, Monterey, Nevada, Placer, Plumas, Sacramento, San Benito, San Francisco, San Joaquin, Santa Clara, Santa Cruz, Shasta, Sierra, Siskiyou, Solano, Sonoma, Stanislaus, Sutter, Tehama, Trinity, Tuolumne, Yolo, and Yuba County
Geothermal Maps:
Coming Soon!
District G2: Imperial, Inyo, Kern, Los Angeles, Orange, Riverside, San Bernardino, San Diego, San Luis Obispo, Santa Barbara, Tulare, and Ventura County
Geothermal Maps:
Coming Soon!
District G3: Del Norte, Humboldt, Lake, Marin, Mendocino, and Napa County
Geothermal Maps:
Coming Soon!