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71 datasets

Surface Water - Water Quality Regulated Facility Information

Published by: California State Water Resources Control Board
Last updated: Tuesday, April 21, 2026
File types: CSV, XLSX, PDF

Information regarding site visits of facilities that discharge wastewater, from the [California Integrated Water Quality System](https://www.waterboar...

State Water Project Routine Water Quality Monitoring

Published by: California Department of Water Resources
Last updated: Thursday, April 23, 2026
File types: CSV, LINK, PDF

The California State Water Project (SWP) is one of the nation’s largest water conveyance projects. Its geographic extent stretches from Sierra Nevada ...

2019 California Water Quality Status Report

Published by: California State Water Resources Control Board
Last updated: Wednesday, October 23, 2019
File types: ZIP, XLSX, CSV, TXT

The California Water Quality Status Report is an annual data-driven snapshot of the Water Board’s water quality and ecosystem data. This third edition...

Statewide Crop Mapping

Published by: California Department of Water Resources
Last updated: Thursday, April 23, 2026
File types: DATA, ZIP, PDF, REST SERVICE, GDB, SHP, STORY MAPS

The California Department of Water Resources (DWR) has been collecting land use data throughout the state and using it to produce agricultural water u...

Surface Water - Toxicity Results

Published by: California State Water Resources Control Board
Last updated: Tuesday, April 21, 2026
File types: PDF, CSV, ZIP

Surface water toxicity data from the [California Environmental Data Exchange Network](https://ceden.waterboards.ca.gov) (CEDEN). CEDEN is the Californ...

i03 Hydrologic Regions

Published by: California Department of Water Resources
Last updated: Thursday, April 23, 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...

i03 Water Plan Planning Areas

Published by: California Department of Water Resources
Last updated: Thursday, April 23, 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...

i03 dwr region offices

Published by: California Department of Water Resources
Last updated: Thursday, April 23, 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...

i03 DAU county cnty2018

Published by: California Department of Water Resources
Last updated: Thursday, April 23, 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...

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...