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31 datasets

California County Boundaries 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

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. ...

California Fire District Submission Web App

Published by: CAL FIRE
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

To better serve the public and encourage cooperation, CAL FIRE has released the largest dataset of local fire districts within the State of California...

California Building Climate Zones

Published by: California Energy Commission
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

Building Climates Zones of California Climate Zone Descriptions for New Buildings - California is divided into 16 climatic boundaries or climate zones...

EZ Building Climate Zone Finder 2.0

Published by: California Energy Commission
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

The Energy Commission has developed this app to quickly and accurately show addresses and locations to determine California’s climate regions. We invi...

Medical Service Study Areas

Published by: Department of Health Care Access and Information
Last updated: Monday, April 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This is the current Medical Service Study Area. California Medical Service Study Areas are created by the California Department of Health Care Access ...

Wastewater User Charge Survey Data for FY 2012-13, FY 2014-15, FY 2016-17 and CY 2018

Published by: California State Water Resources Control Board
Last updated: Friday, December 20, 2024
File types: CSV, XLSX, PDF

The State Water Resources Control Board (State Water Board) conducts regular surveys of sewer rates and connection (capacity) fees charged by wastewat...

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...

Drinking Water - Open Environmental Data Project - March 23, 2023 Workshop

Published by: California State Water Resources Control Board
Last updated: Monday, November 10, 2025
File types: PDF, HTML, CSV, SHP, ZIP, PPTX

The following datasets related to regulated drinking water system facilities in California have been developed and are available for the purpose of th...

California Water Rights Annual Reports (Detail Summary List)

Published by: California State Water Resources Control Board
Last updated: Friday, August 29, 2025
File types: CSV, XLSX, DOC, PDF

This list includes detail information as reported annually under each water right as stored in the State Water Resources Control Board's "Electronic W...