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90 datasets

CGS Information Warehouse: Mineral Land Classification Maps (SMARA Study Areas)

Published by: California Department of Conservation
Last updated: Thursday, April 30, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Mineral Land Classification studies are produced by the State Geologist as specified by the Surface Mining and Reclamation Act (SMARA, PRC 2710 et seq...

CalGEM: Geothermal Wells

Published by: California Department of Conservation
Last updated: Wednesday, April 29, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This online map represents geothermal wells regulated by the Geologic Energy Management Division. CalGEM is the Geologic Energy Management Division of...

WellSTAR Oil and Gas Facilities: Tank Settings

Published by: California Department of Conservation
Last updated: Wednesday, April 29, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This online map displays facility sites in group or by facility types in separate layers: including tank settings.CalGEM is the Geologic Energy Manage...

CGS Landslide Zones

Published by: California Department of Conservation
Last updated: Thursday, April 30, 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...

CGS Seismic Hazards Program: Landslide Zones

Published by: California Department of Conservation
Last updated: Thursday, April 30, 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...

Regulatory Maps

Published by: California Department of Conservation
Last updated: Thursday, April 30, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

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

CGS Map Sheet 58: Deep-Seated Landslide Susceptibility

Published by: California Department of Conservation
Last updated: Wednesday, April 29, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The Susceptibility to Deep-Seated Landslides map covers the entire state of California and was originally published in May of 2011 as CGS Map Sheet 58...

Primacy Aquifer Exemptions

Published by: California Department of Conservation
Last updated: Thursday, April 30, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This dataset is a partial rendition of the CalGEM (formerly the California Division of Oil, Gas, and Geothermal Resources) publication called Californ...

Primacy Aquifer Exemptions

Published by: California Department of Conservation
Last updated: Thursday, April 30, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This dataset is a partial rendition of the CalGEM (formerly the California Division of Oil, Gas, and Geothermal Resources) publication called Californ...

DMR Lead Agencies

Published by: California Department of Conservation
Last updated: Wednesday, April 29, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Boundaries of lead agencies responsible under SMARA for regulating mine reclamation....