CGS Programs and Offices

Office of the State Geologist

801 K Street, MS 12-30
Sacramento, CA 95814

Tel: (916) 445-1825
Fax: (916) 445-5718
cgshq@conservation.ca.gov

Forest and Watershed Geology Program

801 K Street, MS 13-40
Sacramento, CA 95814

Tel: (916) 322-5926​
Fax: (916) 323-9264
fwgp@conservation.ca.gov
Webpage

Geologic Mapping Program

801 K Street, MS 12-32
Sacramento, CA 95814

Tel: (916) 327-2759
Fax: (916) 322-4765
rghmp@conservation.ca.gov
Webpage

Mineral Resources Program

801 K Street, MS 12-31
Sacramento, CA 95814

Tel: (916) 322-2719
Fax: (916) 324-6490
minerals@conservation.ca.gov
Webpage

Seismic Hazards Program

801 K Street, MS 12-31
Sacramento, CA 95814

Tel: (916) 327-2759
Fax: (916) 445-3334
shmp@conservation.ca.gov
Webpage

Strong Motion Instrumentation Program

801 K Str​eet, MS 13-35
Sacramento, CA 95814

Tel: (916) 322-3106
Fax: (916) 323-7778
cgssmip@conservation.ca.gov
Webpage

Geological Survey Library

801 K Street, MS 14-34
Sacramento, CA 95814

Tel: (916) 327-1850
Fax: (916) 327-1853
cgslibrary@conservation.ca.gov
Webpage

Publications Sales Desk

801 K Street, MS 14-34
Sacramento, CA 95814

Tel: (916) 327-1850
Fax: (916) 327-1853
cgspubs@conservation.ca.gov
Webpage

Bay Area Regional Office

1900 S. Norfolk St., Suite 300
San Mateo, CA 94403

Tel: (650) 350-7307
Fax: (650) 350-7312

Southern California Regional Office

320 West 4th St., Suite 850
Los Angeles, CA 90013

Tel: (213) 239-0878
Fax: (213) 239-0894