Learn how to create your own. Three main faults running through Riverside, San Diego and Imperial counties that are well-known to residents are visible on the map - the San Andreas, the San Jacinto and the Elsinore fault … Geologists say this is the biggest earthquake threat to San Diego, capable of earthquakes of magnitude 6.9. If your location is in an earthquake hazard zone, for example, the map also shows 2016 earthquake shaking potential data and 2014 fault sources data from the California Geological Survey and the United States Geological Survey. This map was created by a user. This map is not a substitute for a site specific fault investigation. Southern California Southern California is a megapolitan area in the southern region of the U.S. state of California.The large urban areas containing Los Angeles and San Diego stretch all along the coast from Ventura to the Southland and Inland Empire to San Diego. The Elsinore and San Jacinto faults cut through East County and can also generate moderately-sized but potentially damaging earthquakes. Fault investigations are ongoing that may require future revision of this map. New quake fault map issued for San Diego area This is an update of faults known to have caused quakes that broke the Earth’s surface in the past.

The Know Your Hazards map lets you enter an address, then displays hazards for that location and areas nearby. State of California. The Rose Canyon fault runs along the coast and beneath downtown San Diego. Menu Contact Search Skip to Main Content. Clicking on a line…

The City of San Diego identifies active faults as Holocene (= 11,000yr) and potentially active as Quaternary (up to 1.6my). (Image courtesy of California Geological Survey)