Mt. Soledad landslide in La Jolla, CA - October 2007

California Geological Survey

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The California Geological Survey is one of the oldest geological surveys in the nation. Our mission is to provide scientific products and services about the state's geology, seismology, and minerals that affect the health, safety, and business interests of the people of California. –“Altiora Petimus” (We Reach Higher)



DOC Appoints New State Geologist to Lead State’s Geological SurveyDOC Appoints New State Geologist to Lead State’s Geological SurveyJeremy Lancaster has been named the State Geologist of California and will lead the DOC's California Geological Survey (CGS), an organization that traces its history to the Gold Rush but whose work continues to evolve to meet today’s emerging climate challenges and opportunities.,
In Memoriam: James Frazier “Jim” Davis (1931 – 2023)In Memoriam: James Frazier “Jim” Davis (1931 – 2023)The California Geological Survey remembers former California State Geologist, James F. Davis, who passed away on September 30, 2023., Jim Davis memorial page
Geologic and Geophysical Maps of the Stockton 30’ x 60’ QuadrangleGeologic and Geophysical Maps of the Stockton 30’ x 60’ QuadrangleThis release consists of two PDF files: a 79-page pamphlet and a multilayer plate depicting general geology, faults, landslides, gravity and aeromagnetic anomalies, topographic contours and relief, and more. Visit our Publication Announcements page for more information., /cgs/publications/releases

 Upcoming Events



Calendar of geology-related events and anniversariesCalendar of geology-related events and anniversariesSubscribe to our Public Calendar of Events and never miss an important date: Anniversaries of major earthquakes and tsunamis · The Great Shakeout · SMIP Seminar...and more!2023-01-01T08:00:00Z2026-01-01T08:00:00Z, Link to Public Calendar of Events page

 Featured Content



MapsMapsLooking for California geologic maps? Start here.
Publication AnnouncementsPublication AnnouncementsRelease announcements of maps, reports and other publications of the California Geological Survey.
Publications of the California Geological SurveyPublications of the California Geological SurveyOfficial directory of publications we've produced from the late 19th century to the present.
Earthquake Data and ReportsEarthquake Data and ReportsLinks to the Center for Engineering Strong Motion Data, Internet Quick Reports and Internet Data Reports, ShakeMaps, and SMIP Seminar information.

California Geological Survey

 Contact Us

California Geological Survey
715 P Street, MS 1901
Sacramento, CA 95814