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



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





Temporary Closure of the CGS Library and Publications Sales DeskTemporary Closure of the CGS Library and Publications Sales DeskIn an effort to protect public health and the safety of our visitors and staff as the state responds to the continued threat of COVID-19, the California Geological Survey Library and Publications Sales Desk have temporarily suspended operations.,
California Accepting Applications for State Geologist VacancyCalifornia Accepting Applications for State Geologist VacancyVacant since 2018, this position provides technical information and advice to the Governor, State agencies, and the public on issues pertaining to California geology, geologic hazards, engineering geology, and mineral resources. Click/tap this news item for more information., SMGB web page: State Geologist Position Opening
Engineering Geologist Exams are OpenEngineering Geologist Exams are OpenThe EG, Senior EG, and Supervising EG exams are back online and active at! Be sure to take the exam(s) with the most recent publish date (1/21/2020), as some older exam links are still active. Click/tap this news item to access the exams. Geologist (9PB74-9PB75-9PB76)&depid=1&postdays=90, Link to list of exams on CalCareers
CGS Note 48 update-Checklist for Engineering Geology and Seismology ReportsCGS Note 48 update-Checklist for Engineering Geology and Seismology ReportsCGS uses Note 48 (Checklist for the Review of Engineering Geology and Seismology Reports for California Public Schools, Hospitals, and Essential Services Buildings) to evaluate geologic reports prepared under CCR Title 24, California Building Code. Click/tap this news item to download the update.
Help California Map Recent LandslidesHelp California Map Recent LandslidesThe California Recent Reported Landslides Database is an online map showing the locations, photos, and other attributes of recent landslides in California. This map depends on volunteer reports from people like you! To learn more, visit our Official Releases page.,
30 Years After Loma Prieta, CGS Continues Quake Safety Work30 Years After Loma Prieta, CGS Continues Quake Safety WorkAs the 30th anniversary of the devastating Loma Prieta Earthquake approaches, it’s time to take stock of California’s preparedness. This week's Notes From the Field blog post explains how our California Geological Survey (CGS) has a large role to play in that area.,

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

​​​​(916) 445-1825
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