Maps

Faults and Earthquake Probability Maps

2008 Bay Area Earthquake Probabilities
USGS and other scientists estimate the probability of at least one magnitude 6.7 or greater quake striking the San Francisco Bay region.
Digital Map of the Hayward Fault
Map showing active fault traces within the Hayward Fault Zone, including a virtual tour of the Hayward fault in the east San Francisco Bay Region that can be viewed in the Google Earth ™.
Earthquakes and Faults in the San Francisco Bay Area
Map depicting faults and M 1.5–7.0 earthquakes in the greater San Francisco Bay area.
sfbayquakes.org
Portfolio of images of landscape, seascape and faults of the San Francisco Bay area.

Soil Type and Shaking Hazard in the San Francisco Bay Area
Interactive map showing shaking hazard and earthquake fault in the San Francisco Bay Area.
See also: Shakemap PGA and PGV Station Corrections, calculated using the Northern California Shakemap data set, show the relative amplification of earthquake waves.
Northwestern Alameda County
Digital database identifying areas in the Oakland, California region that could amplify ground shaking from earthquakes.

San Francisco Bay Area
These maps offer better tools to assess risk from earthquake damage in the densely populated section of the San Francisco Bay area.
Northwestern Alameda County
Digital database identifying areas in the Oakland, California region that could produce surface liquefaction during a M 7.1 earthquake on the Hayward Fault.
Northern Santa Clara Valley
Liquefaction hazard maps for three earthquake scenarios for the communities of San Jose, Campbell, Cupertino, Los Altos, Los Gatos, Milpitas, Mountain View, Palo Alto, Santa Clara, Saratoga, and Sunnyvale, Northern Santa Clara County, California

San Francisco Bay Region Geology and Geologic Hazards
Access to geologic, Quaternary-active fault, and liquefaction susceptibility maps, including additional information, images, downloads, and links.