CGS Seismic Hazards Program: Alquist-Priolo Fault Hazard Zones

This data set contains the Alquist-Priolo Earthquake Fault Zones as shown on the Official Alquist-Priolo Earthquake Fault Zones Maps. The dataset is comprised of polygons that form regulatory zone boundaries (Alquist-Priolo Earthquake Fault Zones). These features delineate areas where surface fault rupture previously has occurred, or where local topographic, geological, and geotechnical conditions indicate a potential for permanent ground displacements such that mitigation by avoidance as stated in Public Resources Code Section 2621.5 would be required.
Organization: State of California
Last updated: 2025-07-23T16:30:25.155228
Tags: active-fault, alquist-priolo, california, california-department-of-conservation, california-geological-survey, california-natural-resources-agency, caopendata, cgs, doc, earthquake-fault-zone-map, earthquake-hazard-identification-and-mitigation, fault-map, geoscientificinformation, planningcadastre, surface-fault-rupture, usa