Welcome to the California Geological Survey
THE CALIFORNIA GEOLOGICAL SURVEY is one of the oldest geological surveys in the United States, having been
established in 1860. We map and analyze data on the state's diverse geologic environment, earthquakes, and other geologic hazards and mineral resources to provide critical information to protect life, property, commerce, and the environment from natural hazards. The California Geological Survey is regarded as the primary source of geologic information used for decision-making by California's government agencies, its businesses, and the public.
–“ALTIORA PETIMUS” (We Reach Higher)
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California’s Non-Fuel Mineral Production in 2016 | | Posted:
6/12/2018 8:00 AM | The California Geological Survey provides an annual summary of the state’s mineral production exclusive of oil, gas, geothermal, and coal. In 2016, California ranked fourth among the states in non-fuel mineral production, accounting for approximately 4.5 % of the United States total. There were 663 active mines in the state producing non-fuel minerals during 2016. The total market value of production was $3.4 billion. In terms of value, the top five non-fuel minerals produced in 2016 were construction sand and gravel, portland cement, boron minerals, crushed stone, and soda ash.
 Download the report, 'California Non-Fuel Minerals 2016'
 Follow this link to learn more about California’s Non-Fuel Mineral Production | | | |
Earthquake Hazards Search is easier with EQ ZappCalifornia Geological Survey unveils web application to help public locate Earthquake Hazard Zones | | Posted:
3/21/2018 10:00 AM | The California Earthquake Hazards Zone Application is an online map that allows anyone with a computer, tablet or smartphone to conveniently check whether a property is in an earthquake hazard zone. With this tool, you can type in an address or use the location capability of your computer or mobile device to determine whether a property lies within any of CGS’s mapped earthquake hazard zones. It will also tell you if CGS has not yet evaluated the hazards in that area.
Follow this link to explore the California Earthquake Hazards Zone Application | | | |
Special Report 240 - Update of Mineral Land Classification: Portland Cement Concrete-Grade Aggregate in the Western San Diego County Production-Consumption Region of California | | Posted:
2/16/2018 8:00 AM | | |
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