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
Organization URL: https://catalog.data.gov/organization/california
Last updated: 2025-11-19T17:39:00.333Z
Tags: Alquist-Priolo, CAOpenData, CGS, California, California Department of Conservation, California Geological Survey, California Natural Resources Agency, DOC, Earthquake Fault Zone Map, USA, active fault, california department of conservation, earthquake hazard identification and mitigation, fault map, geoscientificInformation, planningCadastre, surface fault rupture