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90 datasets

Earthquake Zones of Required Investigation

Published by: California Department of Conservation
Last updated: Friday, May 23, 2025
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...

Geologic Map of California (2010)

Published by: California Department of Conservation
Last updated: Sunday, January 11, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

This edition of the Geologic Map of California was prepared in recognition of the California Geological Survey's 150th Anniversary. It is an all-digit...

CalGEM District Boundaries

Published by: California Department of Conservation
Last updated: Monday, October 9, 2023
File types: HTML, ARCGIS GEOSERVICES REST API

District boundaries for the Geologic Energy Management Division in the California Department of Conservation. CalGEM is the Geologic Energy Management...

Fault Activity Map of California (2010)

Published by: California Department of Conservation
Last updated: Sunday, January 11, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

"This digital database contains the faults shown on the Fault Activity Map of California by Charles W. Jennings and William A. Bryant published i...

Special Report 230: Geologic Gems of California State Parks

Published by: California Department of Conservation
Last updated: Sunday, January 11, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

California is a veritable treasure chest of nationally acclaimed natural landmarks and much adored scenery. This geologic legacy on display in the lan...

Submitted Notice of Intention

Published by: California Department of Conservation
Last updated: Sunday, January 11, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This online map locates the wells that have NOI records in the CalGEM WellSTAR database, and provides well NOI information including operator, lease, ...

Approved Notice of Intention/Permit

Published by: California Department of Conservation
Last updated: Sunday, January 11, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This online map locates the wells that have NOI records in the CalGEM WellSTAR database, and provides well NOI information including operator, lease, ...

Earthquake Zones of Required Investigation

Published by: California Department of Conservation
Last updated: Saturday, January 10, 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...

Earthquake Zones of Required Investigation Maps and Reports

Published by: California Department of Conservation
Last updated: Saturday, January 10, 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...

WellSTAR Notices and Permits: Submitted Notices of Intention

Published by: California Department of Conservation
Last updated: Sunday, January 11, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This online map provides the locations of submitted Notice of Intention (NOI) records from CalGEM’s Well Statewide Tracking and Reporting System (Well...