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54 datasets

CGS SHZ Unevaluated Areas

Published by: California Department of Conservation
Last updated: Wednesday, September 9, 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...

RegMapsLinks 20251120

Published by: California Department of Conservation
Last updated: Wednesday, September 9, 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...

Regulatory Maps

Published by: California Department of Conservation
Last updated: Wednesday, September 9, 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...

CalEnviroScreen 2.0

Published by: California Office of Environmental Health Hazard Assessment
Last updated: Wednesday, October 23, 2019
File types: CSV, XLSX, PDF

The Office of Environmental Health Hazard Assessment (OEHHA), on behalf of the California Environmental Protection Agency (CalEPA), developed Californ...

CalEnviroScreen 3.0 Results

Published by: California Office of Environmental Health Hazard Assessment
Last updated: Wednesday, October 23, 2019
File types: PDF, CSV, SHP

CalEnviroScreen is a mapping tool that helps identify California communities that are most affected by many sources of pollution, and where people are...

CalEnviroScreen 5.0

Published by: California Office of Environmental Health Hazard Assessment
Last updated: Wednesday, July 1, 2026
File types: LYRX, GDB, SHP, CSV, XLSX, PDF

CalEnviroScreen is a mapping tool that helps identify California communities that are most affected by many sources of pollution, and where people are...

CalEnviroScreen 4.0

Published by: California Office of Environmental Health Hazard Assessment
Last updated: Tuesday, January 10, 2023
File types: GDB, SHP, XLSX

CalEnviroScreen is a mapping tool that helps identify California communities that are most affected by many sources of pollution, and where people are...

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

Published by: California Department of Conservation
Last updated: Wednesday, September 9, 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...

CGS Information Warehouse: Mineral Land Classification Maps (SMARA Petitions)

Published by: California Department of Conservation
Last updated: Wednesday, September 9, 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...

CGS Map Sheet 58: Deep-Seated Landslide Susceptibility

Published by: California Department of Conservation
Last updated: Wednesday, September 9, 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...