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.
Data files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
CSV | Download | CSV | 03/13/25 |
Shapefile | Download | ZIP | 03/13/25 |
GeoJSON | Download | GEOJSON | 03/13/25 |
KML | Download | KML | 03/13/25 |
File Geodatabase | Download | ZIP | 03/13/25 |
Feature Collection | Download | TXT | 03/13/25 |
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
ArcGIS Hub Dataset | Download | HTML | 03/13/25 |
ArcGIS GeoService | Download | ARCGIS GEOSERVICES REST API | 02/20/25 |
Excel | Download | XLSX | 03/13/25 |
GeoPackage | Download | GPKG | 03/13/25 |
SQLite Geodatabase | Download | GDB | 03/13/25 |
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