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

California Geological Survey

California is the most geologically diverse and the second most seismically active state in the USA. The California Geological Survey provides scientific products and services about the state's geology, seismology and mineral resources, including their related hazards, that affect the health, safety, and business interests of the people of California. We are one of the oldest geological surveys in the nation, and today produce more products and provide more services to more people than any other state survey. –“A​ltiora Petimus”​ ​(We Reach Higher​​)

 Featured Content



Earthquakes and FaultsEarthquakes and FaultsRecent and historic earthquakes, faults, earthquake probabilities, earthquake loss estimation, seismic hazard zonation, and more
LandslidesLandslidesInformation about landslides and landslide mapping.
TsunamisTsunamisGeneral tsunami information, tsunami preparedness, links to tsunami inundation maps, and more.
Official Map and Report Release AnnouncementsOfficial Map and Report Release AnnouncementsRecent releases of official maps, reports and other publications of the California Geological Survey.
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.
Maps and DataMaps and DataLooking for California geologic maps or GIS data? Start here.



Job Posting: Seismological Instrument Technician 1, Geological Survey, Link to job posting at CalCareers
Help California Map Recent Landslides, To the Official Releases page!
California State Geologist Position Vacancy, California State Geologist Position Vacancy
Special Report 245: Concrete Aggregate Resources in the Greater Sacramento Area, To the Official Releases page!
Cal State Fullerton Names CGS Scientist '2019 Geology Alumna of the Year',
California’s Non-Fuel Mineral Production in 2017,
Scientists on the Front Line,



 Contact Us

​8​01 K Street, MS 12-30
Sacramento, CA 95814

​​​​(916) 445-1825
 (916) 445-5718
 Email CGS Headquarters​​
 Email CGS Webmaster​​

All Offices and Programs