CGS Seismic Hazards Program: Unevaluated Areas

Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. In addition, a fourth feature may be included representing areas not evaluated for liquefaction or earthquake-induced landslides.

Developers of properties falling within any of the three zones may be required to investigate the potential hazard and mitigate its threat during the local permitting process.