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138 datasets

2070 Extreme Climate Change Scenarios for Water Supply Planning

Published by: California Department of Water Resources
Last updated: Saturday, April 11, 2026
File types: PDF, ZIP

DWR’s 2070 extreme climate change scenarios enable exploration of the vulnerability of and opportunities for water supply at the potential bounds of f...

Beach Advisories (Postings and Closures) and Beach Water Quality Monitoring

Published by: California State Water Resources Control Board
Last updated: Tuesday, March 17, 2026
File types: PDF, CSV, ZIP

One of California's biggest industries is tourism, and beaches are a significant tourist attraction as well as being an integral part of California’s ...

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...

Surface Water - Fecal Indicator Bacteria Monitoring Results

Published by: California State Water Resources Control Board
Last updated: Saturday, April 11, 2026
File types: CSV, PDF

This dataset contains fecal indicator bacteria (FIB) monitoring results collected from surface waters across California. It includes results for _Esch...

Interagency Ecological Program: Fish catch and water quality data from the Sacramento River floodplain and tidal slough, collected by the Yolo Bypass Fish Monitoring Program, 1998-2023.

Published by: California Department of Water Resources
Last updated: Saturday, April 11, 2026
File types:

Largely supported by the Interagency Ecological Program (IEP), California Department of Water Resources (DWR) has operated a fish monitoring program i...

Climate Change Projections for Water Storage Investment Program (WSIP)

Published by: California Water Commission
Last updated: Friday, April 10, 2026
File types: PDF, ZIP

To aid applicants with quantification and monetization of benefits of proposed water storage projects per Chapter 8 of Proposition 1 (Water Code secti...

California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG)

Published by: California Department of Water Resources
Last updated: Saturday, April 11, 2026
File types: ZIP, PDF

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major u...

2025 UWMP Reporting

Published by: California Department of Water Resources
Last updated: Saturday, April 11, 2026
File types: PDF

This DWR Open Data Publication includes the necessary reporting materials to complete the 2025 Urban Water Management Plan (UWMP). Urban Water Managem...

DWR's Basin Characterization Program

Published by: California Department of Water Resources
Last updated: Saturday, April 11, 2026
File types: .ZIP, ZIP, FILE GEODATABASE, PDF

DWR has a long history of studying and characterizing California’s groundwater aquifers as a part of [California’s Groundwater (Bulletin 118)](https:/...

i03 Proposition1 Funding Areas

Published by: California Department of Water Resources
Last updated: Saturday, April 11, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This data depicts California Proposition 1 Funding Area boundaries as defined by Water Code §79744, which states, "(a) Of the funds authorized by...