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)



California Geological Survey's Active Fault Reports Now Available OnlineCalifornia Geological Survey's Active Fault Reports Now Available OnlineOver 4,000 fault investigation reports are now available online. Required by the Alquist–Priolo Earthquake Fault Zoning Act, the reports help protect public safety and property from the dangerous and costly hazard of surface fault rupture. Use the maps to explore areas by street address and keyword.,
Mapping Tsunami Hazards in California: When Experience Meets ExpertiseMapping Tsunami Hazards in California: When Experience Meets ExpertiseNick Graehl, engineering geologist in California Geological Survey’s Tsunami Program, often reflects on his first post-tsunami reconnaissance trip as a reminder of the importance of preparing Californians for a tsunami.,
Senior Precision Electronic Specialist examinationSenior Precision Electronic Specialist examinationThe SENIOR PRECISION ELECTRONIC SPECIALIST examination is open indefinitely at Senior Precision Electronic Specialists oversee the installation, maintenance, and repair of California's earthquake detection network. Not qualified to be a Senior PES? Try the PES exam instead., Link to exam posting at CalCareers



 Featured Content



Post-Wildfire Debris FlowsPost-Wildfire Debris FlowsA debris flow can strike with little warning. Learn how to recognize the potential and how to prepare for one.
Maps and DataMaps and DataLooking for California geologic maps or GIS data? Start here.
Tōhoku-oki Earthquake and Tsunami, March 11, 2011Tōhoku-oki Earthquake and Tsunami, March 11, 2011How an earthquake in Japan helped shape California's plan for the next tsunami
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.

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