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54 datasets

CGS Liquefaction Zones

Published by: California Department of Conservation
Last updated: Sunday, April 5, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

This is a digital Seismic Hazard Zone Map presenting areas where liquefaction may occur during a strong earthquake. Developers of properties falling w...

CGS Seismic Hazards Program: Unevaluated Areas

Published by: California Department of Conservation
Last updated: Sunday, April 5, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Three types of geol...

Earthquake Zones of Required Investigation

Published by: California Department of Conservation
Last updated: Sunday, April 5, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

The California Earthquake Hazards Zone Application ("EQ Zapp") is an online map that allows anyone with a computer, tablet or smartphone to...

CUPA Boundary Zone Lookup

Published by: California Environmental Protection Agency
Last updated: Friday, April 3, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

This application allows users to enter an address, manually select a point on a map, or draw a polygon to identify the agency responsible for respondi...

High Occupancy Vehicle

Published by: Caltrans
Last updated: Sunday, April 5, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

High-Occupancy Vehicle (HOV) lane, also known as the carpool or diamond lane, is a traffic management strategy to promote and encourage ridesharing; t...

CGS Alquist Priolo Fault Zones

Published by: California Department of Conservation
Last updated: Sunday, April 5, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

This data set contains the Alquist-Priolo Earthquake Fault Zones as shown on the Official Alquist-Priolo Earthquake Fault Zones Maps. The dataset is c...

Earthquake Zones of Required Investigation Maps and Reports

Published by: California Department of Conservation
Last updated: Sunday, April 5, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

The Alquist-Priolo Earthquake Fault Zoning Act (1972) and the Seismic Hazards Mapping Act (1990) direct the State Geologist to delineate regulatory &q...

SRA FHSZ Rollout Application September 2023

Published by: CAL FIRE
Last updated: Sunday, April 5, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

Pursuant to Public Resource Code 4202, The State Fire Marshal shall classify lands within State Responsibility Areas into fire hazard severity zones. ...

Wildland Urban Interface

Published by: CAL FIRE
Last updated: Sunday, April 5, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The current dataset is appropriate for displaying the overall pattern of WUI development at the county level, and comparing counties in terms of devel...

Community Vulnerability (BCDC 2020)

Published by: San Francisco Bay Conservation and Development Commission
Last updated: Thursday, April 2, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

The San Francisco Bay Conservation and Development Commission Adapting to Rising Tides Program developed a dataset to better understand community vuln...