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138 datasets

Geologic Map of California (2010)

Published by: California Department of Conservation
Last updated: Monday, April 6, 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...

Special Report 230: Geologic Gems of California State Parks

Published by: California Department of Conservation
Last updated: Monday, April 6, 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...

i08 GeologicUnits SacramentoValley

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This data set is a series of polygons denoting the geologic units mapped in USGS Publication MF-1790, "Geologic Map of the Late Cenozoic Deposits of t...

i08 GeologicStructures SacramentoValley

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This data set is a series of polylines denoting the major geologic structures of the Sacramento Valley as mapped in USGS Professional Paper 1359, &quo...

Fault Activity Map of California (2010)

Published by: California Department of Conservation
Last updated: Monday, April 6, 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...

i08 CriticallyOverdraftedBasins

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The dataset is a feature class showing the boundaries of 515 groundwater basins and subbasins as defined by the California Department of Water Resourc...

i08 B118 CA GroundwaterBasins 2016

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The dataset is a feature class showing the boundaries of 517 groundwater basins and subbasins as defined by the California Department of Water Resourc...

i08 B118 CA GroundwaterBasins

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The dataset is a feature class showing the boundaries of 515 groundwater basins and subbasins as defined by the California Department of Water Resourc...

i08 B118 CA GroundWaterBasins 2003

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Archived on 20161130 and the name was change from i08_B118_CA_GroundwaterBasins to i08_B118_CA_GWaterBasins20161130. The dataset is a feature class sh...

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...