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377 datasets

City and County Boundary Changes by Roll Year

Published by: California Department of Tax and Fee Administration
Last updated: Tuesday, April 7, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

This map is a compilation of the final set of city and county boundary changes filed with the California State Board of Equalization in accordance wit...

Conservation Plan Boundaries - HCP and NCCP [ds760]

Published by: California Department of Fish and Wildlife
Last updated: Tuesday, April 7, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This shapefile contains Natural Community Conservation Plan (NCCP) (some of which are also Habitat Conservation Plan (HCP)) boundaries in California. ...

Bay-Delta SCHISM Coastal Data for Ocean Boundary

Published by: California Department of Water Resources
Last updated: Tuesday, April 7, 2026
File types: TAR.GZ, TAR

The Bay-Delta SCHISM model connects to coastal models on its ocean boundary for salinity and temperature, using Newtonian relaxation or "nudging". The...

Groundfish Recreational Boundaries - R7 - CDFW [ds3143]

Published by: California Department of Fish and Wildlife
Last updated: Tuesday, April 7, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Waters off the coast of California are split into five distinct groundfish management areas used in the regulation and management of groundfish fisher...

Foothill Yellow-legged Frog Clade Boundaries [ds2865]

Published by: California Department of Fish and Wildlife
Last updated: Tuesday, April 7, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Foothill Yellow-legged Frogs (Rana boylii) are currently recognized as a California Species of Special Concern, a non-regulatory designation intended ...

Regional Conservation Investment Strategy (RCIS) Boundaries [ds3011]

Published by: California Department of Fish and Wildlife
Last updated: Tuesday, April 7, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

An RCIS is a voluntary, non-regulatory, and non-binding conservation assessment that includes information and analyses relating to the conservation of...

Groundwater Basin Boundary Descriptions - Lahontan Region (6-XXX Basins)

Published by: California Department of Water Resources
Last updated: Tuesday, April 7, 2026
File types: PDF

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

BOE CityCounty

Published by: California Department of Tax and Fee Administration
Last updated: Tuesday, April 7, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

This map includes change areas for city and county boundaries filed in accordance with Government Code 54900. The initial dataset was first published ...

BOE CityAnx2027

Published by: California Department of Tax and Fee Administration
Last updated: Tuesday, April 7, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

This map includes change areas for city and county boundaries filed in accordance with Government Code 54900. The initial dataset was first published ...

i03 Local Maintenance Areas Flood Protection

Published by: California Department of Water Resources
Last updated: Tuesday, April 7, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Boundaries of various types of public agencies with responsibilities that include in part or primarily flood control, system maintenance, and improvem...