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212 datasets

Estimated Inundation Periods in the Yolo Bypass, 1998 – 2022

Published by: California Department of Water Resources
Last updated: Monday, July 6, 2026
File types:

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

CIMIS Weather Station & Spatial CIMIS Data - Web API

Published by: California Department of Water Resources
Last updated: Monday, July 6, 2026
File types: JSON

CIMIS data is available to the public free of charge via a web Application Programming Interface (API). The CIMIS Web API delivers data over the REST...

California's Groundwater Basin Boundary Descriptions

Published by: California Department of Water Resources
Last updated: Monday, July 6, 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...

Spatial CIMIS ETo maps — Daily Reference Evapotranspiration for California

Published by: California Department of Water Resources
Last updated: Monday, July 6, 2026
File types: GEOTIFF, TXT

🔔 Full-year 2025 data now available — Complete daily ETo for January–December 2025 has been published, replacing the partial-year v1 file. See the Ch...

i07 Habitat Restoration Polygons

Published by: California Department of Water Resources
Last updated: Monday, July 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Approximate locations for habitat projects located within the Sacramento-San Joaquin Delta. This project list builds on earlier efforts, including tho...

i03 SuisunMarshBoundary

Published by: California Department of Water Resources
Last updated: Monday, July 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This feature class was digitized from the map, A.B. 1717, by Jeff Galef on August 22, 2012. The features were labeled as being in the Primary or Secon...

ECO-PTM 0.0.0-beta

Published by: California Department of Water Resources
Last updated: Monday, July 6, 2026
File types: ZIP

ECO-PTM 0.0.0-beta https://github.com/CADWRDeltaModeling/ecoptm Version ECO-PTM 0.0.0-beta is an updated release of DSM2 v8.4 ECO-PTM that inclu...

Natural Communities Commonly Associated with Groundwater

Published by: California Department of Water Resources
Last updated: Monday, July 6, 2026
File types: GDB, SHP, PDF

The Natural Communities dataset is a compilation of 48 publicly available State and federal agency datasets that map vegetation, wetlands, springs, an...

California Groundwater Elevation Monitoring (CASGEM) Program

Published by: California Department of Water Resources
Last updated: Monday, July 6, 2026
File types: PDF

Since 2009, the [California Statewide Groundwater Elevation Monitoring (CASGEM) Program](https://water.ca.gov/programs/groundwater-management/groundwa...

Refuge Conveyance Waterways - Central Valley Project Improvement Act [ds2635]

Published by: California Department of Fish and Wildlife
Last updated: Monday, July 6, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Data was compiled to provide a singular visual representation of conveyance waterways and features available to deliver water to CVPIA wetland habitat...