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194 datasets

Surface Water - Water Quality Regulated Facility Information

Published by: California State Water Resources Control Board
Last updated: Tuesday, March 24, 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 - 2017 California Water Quality Status Report

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

The California Water Boards’ Water Data Center is proud to present the CA Water Quality Status Report. This report is an annual data-driven snapshot ...

Surface Water - 2018 California Water Quality Status Report

Published by: California State Water Resources Control Board
Last updated: Tuesday, October 29, 2019
File types: CSV, ZIP

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

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...

Environmental Monitoring Program: Discrete Water Quality Data

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: CSV, PDF

The Interagency Ecological Program’s (IEP) Environmental Monitoring Program (EMP) was initiated in compliance with the Water Right Decision D-1379 (no...

i08 Stations Discrete Grab Water Quality

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

This is a point feature class of environmental monitoring stations maintained in the California Department of Water Resources’ (hereafter the Departme...

i08 Stations Discrete Grab Water Quality

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This is a point feature class of environmental monitoring stations maintained in the California Department of Water Resources’ (hereafter the Departme...

DWR Flood-MAR Water Quality Sampling Pilot

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: PDF

A repository of Pilot-specific documents used for targeted Pilot outreach and implementation....

Quarterly Water Quality Surveys - Salton Sea [ds429]

Published by: California Department of Fish and Wildlife
Last updated: Saturday, April 4, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

In the spring of 2003, California Department of Fish and Game (CDFG) personnel began quarterly sampling of Salton Sea fish at fourteen stations around...

Water Quality - Effluent - Electronic Self-Monitoring Report (eSMR) Data

Published by: California State Water Resources Control Board
Last updated: Thursday, April 2, 2026
File types: PDF, ZIP, CSV

Wastewater discharges are regulated by the Water Board. Those regulated are generally required to submit Self-Monitoring Reports to the State or Regio...