ExperimentalWe used data and feedback to make a user-friendly site. We’d love your feedback.
Back to data.ca.gov.

Search Water datasets

496 datasets

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

  • Published by: California State Water Resources Control Board
  • Last updated: Thursday, March 12, 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 ...

Surface Water - Fecal Indicator Bacteria Monitoring Results

  • Published by: California State Water Resources Control Board
  • Last updated: Thursday, March 12, 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...

California's Groundwater Update 2025 (Bulletin 118)

  • Published by: California Department of Water Resources
  • Last updated: Monday, March 16, 2026
  • File types: PDF, XLS, URL, .ZIP

California's Groundwater: Bulletin 118 Updates (CalGW Updates) are a continuing series of California's primary technical publications on groundwater r...

State Water Project Routine Water Quality Monitoring

  • Published by: California Department of Water Resources
  • Last updated: Monday, March 16, 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 ...

DWR's Basin Characterization Program

  • Published by: California Department of Water Resources
  • Last updated: Monday, March 16, 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:/...

Stormwater - Regulatory (including Enforcement Actions) Information and Water Quality Results

  • Published by: California State Water Resources Control Board
  • Last updated: Tuesday, March 10, 2026
  • File types: CSV

This dataset looks at all aspects of storm water management in California as managed and regulated by the State Water Resources Control Board, from th...

Surface Water - Toxicity Results

  • Published by: California State Water Resources Control Board
  • Last updated: Tuesday, March 10, 2026
  • File types: PDF, CSV, ZIP

Surface water toxicity data from the [California Environmental Data Exchange Network](https://ceden.org/) (CEDEN). CEDEN is the California State Water...

Surface Water - Water Quality Regulated Facility Information

  • Published by: California State Water Resources Control Board
  • Last updated: Tuesday, March 10, 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...

Surface Water - Water Quality Regulatory Information

  • Published by: California State Water Resources Control Board
  • Last updated: Tuesday, March 10, 2026
  • File types: CSV, PDF

This data set lists active and historical enforcement actions records that are stored in the [California Integrated Water Quality System](https://www....

California's Groundwater Live Supporting Data

  • Published by: California Department of Water Resources
  • Last updated: Monday, March 16, 2026
  • File types: HTML, JPEG, PDF, DOCX, ZIP

This dataset contains files and materials in support of the California's Groundwater Live website. California's Groundwater Live is a user-friendly pl...