​Programs and Offices

Sacramento Offices

Headquarters/Office of the State Geologist

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

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

Seismic Hazards Program

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

Tel: (916) 324-7324
Fax: (916) 445-3334
shmp@consrv.ca.gov
Web page

Earthquake Engineering Program

801 K Street, MS 13-35
Sacramento, CA 95814

Tel: (916) 322-3105
Fax: (916) 323-7778
csmip@consrv.ca.gov
Web page

Forest and Watershed Geology Program

801 K Street, MS 13-24
Sacramento, CA 95814

Tel: (916) 322-9207
Fax: (916) 323-9264
fwgp@consrv.ca.gov
Web page

Geological Survey Library

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

Tel: (916) 327-1850
Fax: (916) 327-1853
cgslib@consrv.ca.gov
Web page

Geological Survey Publications

801 K Street, MS 14-33
Sacramento, CA 95814

Tel: (916) 322-4207
Fax: (916) 327-1853
cgspubs@consrv.ca.gov
Web page

Mineral Resources Program

801 K Street, MS 08-38
Sacramento, CA 95814

Tel: (916) 323-7696
Fax: (916) 324-6490
mrmhmp@consrv.ca.gov
Web page

Geologic Mapping Program

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

Tel: (916) 324-7324
Fax: (916) 322-4765
rghmp@consrv.ca.gov
Web page

Regional Offices

Bay Area Regional Office

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

Tel: (650) 350-7301
Fax: (650) 350-7312
cgsba@consrv.ca.gov

Southern California Regional Office

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

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

Website and Online Content

CGS Webmaster

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

cgs_webmaster@consrv.ca.gov