CALEMA - California Emergency Management Agency - Determine Your Risk

Earthquake Hazards

Earthquakes can occur everywhere in California which means all Californians live with an earthquake risk. In addition to the shaking caused by earthquakes, other things can occur such as landslides, surface fault ruptures and liquefaction--all of which may cause injury or property damage. Take note of where you live, read the information provided here, and contact your local city our county government for further details on how to be prepared where you live.

Earthquake Preparedness

More information and ideas on how to secure the contents of your home can be found at http://www.earthquakecountry.info/daretoprepare/.
Recommended actions for Earthquake Fault zones
If the property is not developed, a fault study may be required before the parcel can be subdivided or structures permitted. If a property is developed, you will not need a geologic study unless you plan to extensively add onto or remodel an existing structure. (more information at http://www.consrv.ca.gov/cgs/rghm/ap/index.htm).
Recommended actions for Liquefaction Seismic Hazard zones
http://geomaps.wr.usgs.gov/sfgeo/liquefaction/what_can.html also See Chapter 6 http://www.conservation.ca.gov/CGS/shzp/webdocs/sp117.pdf
Recommended actions for Earthquake-Induced Landslide zones
See Chapter 5 http://www.conservation.ca.gov/CGS/shzp/webdocs/sp117.pdf
*About the Seismic Hazard Zonation Maps:
These maps prepared by the California Geological Survey are State-mandated regulatory maps that show "Zones of Required Investigation" for surface fault rupture, liquefaction and landslide hazard. They do not depict different degrees of hazard, rather they identify zones within which site specific studies will be required for new construction. These maps also are used in real estate transactions - when a property falls within a "Zone of Required Investigation," sellers of that property must disclose that fact to prospective buyers.
NOTE: Some areas of the State scheduled for Seismic Hazard Zonation for liquefaction and earthquake-induced landslides are yet to be evaluated. If you are informed that you are not in a Seismic Hazard Zone, please check whether the Official Seismic Hazard Zone Map covering your area has been released (http://gmw.consrv.ca.gov/shmp/html/pdf_maps_no.html.)
Also, map scale limitations on this website do not always allow accurate determination of whether a property falls inside or outside a Zone of Required Investigation. This degree of uncertainty is addressed herein by use of the term "in or near" a zone. To determine property location relative to a zone boundary, please visit your local planning agency to view appropriate Official Seismic Hazard, Earthquake Fault Zone maps, and parcel maps. Click here for more information about the Seismic Hazard Zonation Mapping Program.