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440 datasets

Water Quality Data

Published by: California Department of Water Resources
Last updated: Thursday, July 2, 2026
File types: CSV

The California Department of Water Resources (DWR) discrete (vs. continuous) water quality datasets contains DWR-collected, current and historical, ch...

COVID-19 Wastewater Surveillance Data. California

Published by: California State Water Resources Control Board
Last updated: Tuesday, September 10, 2024
File types: CSV, DOCX, XLSX

NOTICE: As of September 6, 2024, the wastewater surveillance dataset will now be hosted on: https://data.chhs.ca.gov/dataset/wastewater-surveillance-d...

CDPH-Wastewater Surveillance Data, California

Published by: California Department of Public Health
Last updated: Thursday, July 2, 2026
File types: CSV, XLSX, ZIP

The California Department of Public Health (CDPH) is coordinating with wastewater utilities, local health departments, academic researchers, and labor...

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...

Annual Precipitation Data for Northern California 1944-Current

Published by: California Department of Water Resources
Last updated: Thursday, July 2, 2026
File types: CSV, PDF

The California Department of Water Resources (DWR), Northern Region Office (NRO), maintains 33 precipitation stations that were installed starting in ...

Interagency Ecological Program: Drift invertebrate catch and water quality from the Sacramento River channel, and Sacramento River floodplain and tidal slough, collected by the Yolo Bypass Fish Monitoring Program, 1998-2019

Published by: California Department of Water Resources
Last updated: Thursday, July 2, 2026
File types:

Largely supported by the Interagency Ecological Program (IEP), the California Department of Water Resources (DWR) has operated a fisheries and inverte...

TRE ALTAMIRA InSAR Subsidence Data

Published by: California Department of Water Resources
Last updated: Thursday, July 2, 2026
File types: PDF, HTML, GEOTIFF, ZIP

This dataset represents measurements of vertical ground surface displacement in more than 200 of the high-use and populated groundwater basins across ...

COVID-19 Post-Vaccination Infection Data (ARCHIVED)

Published by: California Department of Public Health
Last updated: Thursday, July 2, 2026
File types: ZIP, CSV, XLSX

Note: This dataset is no longer being updated due to the end of the COVID-19 Public Health Emergency. The California Department of Public Health (C...

COVID-19 Vaccine Progress Dashboard Data

Published by: California Department of Public Health
Last updated: Thursday, July 2, 2026
File types: ZIP, CSV, XLSX

Note: In these datasets, a person is defined as up to date if they have received at least one dose of an updated COVID-19 vaccine. The Centers for Dis...

County SB 552 Status Dashboard Data and Drought Resilience Plans

Published by: California Department of Water Resources
Last updated: Thursday, July 2, 2026
File types: CSV

This dataset supports the County SB 552 Progress Dashboard, which is published on DWR’s [County Drought Resilience Planning webpage](https://water.ca....