State Hazard Maps from CGS:

Liquefaction and Seismically-induced Landslide Hazards ("Zones of Required Investigation") 

Click on the appropriate quadrangle map and wait for the pdf to load.


Earthquake Fault Zones for Active Faults ('Alquist-Priolo Special Studies Zones")

This link is new for fault rupture hazard but are the older AP maps. Either search by City or address or click the appropriate quadrangle map wait for the pdf to load. 

  • Note: we are in Richmond 7.5' minute Quadrangle, Oakland East is to the south.


USGS "Best-Fit" Active Traces of the Hayward Fault (J.J. Lienkaemper)


Alan Kropp and Associates map