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116 datasets

i03 SuisunMarshBoundary

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This feature class was digitized from the map, A.B. 1717, by Jeff Galef on August 22, 2012. The features were labeled as being in the Primary or Secon...

California City Boundaries and Identifiers with Coastal Buffers

Published by: California Department of Technology
Last updated: Wednesday, October 1, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

Note: The schema changed in February 2025 - please see below. We will post a roadmap of upcoming changes, but service URLs and schema are now stable. ...

Groundwater Basin Boundary Descriptions - Santa Ana Region (8-XXX Basins)

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: PDF

This dataset includes the official groundwater basin boundary descriptions for California's 515 groundwater basins. To make locating descriptions easi...

i03 DAU county cnty2018

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metadata for CAL-FIRE cnty18_1), State of California.The exi...

Groundwater Basin Boundary Descriptions - Central Coast Region (3-XXX Basins)

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: PDF

This dataset includes the official groundwater basin boundary descriptions for California's 515 groundwater basins. To make locating descriptions easi...

California Counties for the California Department of Education

Published by: California Department of Education
Last updated: Saturday, April 4, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

This layer contains the boundaries for California’s 58 counties. County features are derived from the US Census Bureau's 2020 TIGER/Line database and ...

Groundwater Basin Boundary Descriptions - Sacramento River Region (5-XXX Basins)

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: PDF

This dataset includes the official groundwater basin boundary descriptions for California's 515 groundwater basins. To make locating descriptions easi...

i03 Hydrologic Regions

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Description for i03_DAU_county_cnty2018 is as follows:Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metada...

California Overlapping Cities and Counties and Identifiers

Published by: California Department of Technology
Last updated: Wednesday, October 1, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

WARNING: This is a pre-release dataset and its fields names and data structures are subject to change. It should be considered pre-release until the e...

i16 Census County DisadvantagedCommunities 2023

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The IRWM web based DAC mapping tool uses this GIS layer. Created by joining ACS 2019-2023 5 year estimates to the 2020 Census Counties feature class. ...