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24 datasets

CGS Information Warehouse: Regulatory Maps

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

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

CGS Information Warehouse: Tsunami Inundation Maps

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

Produced collectively by tsunami modelers, geologic hazard mapping specialists, and emergency planning scientists from the University of Southern Cali...

CGS Seismic Hazards Program: Unevaluated Areas

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

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

CGS Seismic Hazards Program: Fault Traces

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

This data set contains the Alquist-Priolo Earthquake Fault Zones and fault traces as shown on the Official Alquist-Priolo Earthquake Fault Zones Map o...

CGS Seismic Hazards Program: Unevaluated Areas

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

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

CGS Seismic Hazards Program: Landslide Zones

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

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

CGS Seismic Hazards Program: Liquefaction Zones

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

Liquefaction Zones (Feature Service)This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a st...

CGS Seismic Hazards Program: Liquefaction Zones

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

Liquefaction Zones (Map or Tile Service)This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during ...

CGS Information Warehouse: Landslide Maps and Reports

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

Since the 1960's, the California Geological Survey (CGS) has produced numerous maps that show landslide features and delineate potential slope-stabili...

CGS Mineral Hazards: Indoor Radon Potential Zones

Published by: California Department of Conservation
Last updated: Monday, July 1, 2024
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, GEOJSON, ZIP, KML

This digital layer contains polygons (vector format) of portions of California designated as having high, moderate, low, or unknown potential for home...