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351 datasets

Airborne electromagnetic (AEM) Pilot Studies

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

Airborne electromagnetic (AEM) geophysical data were collected in California as a part of AEM pilot studies. The purpose of the AEM pilot studies was ...

Estimates of Natural and Unimpaired Flows for the Central Valley of California: WY 1922-2014

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

This report summarizes estimates of “natural” and “unimpaired” flows for all areas in the Central Valley tributary to the Sacramento – San Joaquin Del...

San Francisco Bay and Sacramento-San Joaquin Delta DEM for Modeling, Version 4.1 (SUPERSEDED)

Published by: California Department of Water Resources
Last updated: Thursday, April 23, 2026
File types: ZIP, PNG

This product is superseded by version 4.2. See: https://data.cnra.ca.gov/dataset/san-francisco-bay-and-sacramento-san-joaquin-delta-dem-for-modeling-...

California's Groundwater Basin Boundary Descriptions

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

In conjunction with the release of [California’s Groundwater Update 2020](https://data.cnra.ca.gov/dataset/caglw_update2020), DWR has compiled a compr...

Collection of Groundwater Applications and Tools

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

This dataset includes links and descriptions to a collection of groundwater applications and tools that have been developed by the Department of Water...

C2VSimCG

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

C2VSim Coarse Grid...

Modeling and Analysis Web Page General Contents

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

Modeling and Analysis Web Page General Contents...

Significant Lands - Waterbodies

Published by: California State Lands Commission
Last updated: Friday, April 17, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

The State Lands Commission has prepared the Significant Lands Inventory (report) for the California Legislature as a general identification and classi...

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...

Paleo-Dendrochronological "Tree-Ring" Hydroclimatic Reconstructions for Northern and Southern California River Basins

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

### Background Tree-ring chronologies allow assessment of hydrologic variability over centuries to millennia, gives historic context for assessing re...