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705 datasets

i16 Census Tract EconomicallyDistressedAreas 2023

Published by: California Department of Water Resources
Last updated: Wednesday, July 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The IRWM web based EDA mapping tool uses this GIS layer. Created by joining ACS 2019-2023 5 year estimates to the 2020 Census Tract feature class. The...

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

Published by: California Department of Water Resources
Last updated: Wednesday, July 22, 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...

DWR's Basin Characterization Tools - BCTools

Published by: California Department of Water Resources
Last updated: Wednesday, July 22, 2026
File types: PNG, ZIP, .ZIP, PDF

*Back to [Basin Characterization Program webpage](https://data.cnra.ca.gov/dataset/dwr-basin-characterization "Basin Characterization Program webpage"...

i16 Census County DisadvantagedCommunities 2023

Published by: California Department of Water Resources
Last updated: Wednesday, July 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The IRWM web based DAC mapping tool uses this GIS layer. Created by joining ACS 2019-2023 5 year estimates to the 2020 Census Counties feature class. ...

DWR's Basin Characterization Program

Published by: California Department of Water Resources
Last updated: Wednesday, July 22, 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:/...

i03 Local Maintenance Areas Flood Protection

Published by: California Department of Water Resources
Last updated: Wednesday, July 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Boundaries of various types of public agencies with responsibilities that include in part or primarily flood control, system maintenance, and improvem...

i03 DAU county cnty2018

Published by: California Department of Water Resources
Last updated: Wednesday, July 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metadata for CAL-FIRE cnty18_1), State of California.The exi...

i16 Census County EconomicallyDistressedAreas 2023

Published by: California Department of Water Resources
Last updated: Wednesday, July 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This is a copy of the statewide County GIS Tiger file. Created by joining ACS 2019-2023 5 year estimates to the 2020 Census Counties feature class, an...

i08 C2VSimFG Elements

Published by: California Department of Water Resources
Last updated: Wednesday, July 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

There is a total of 32, 537 elements within the C2VSimFG model, which make-up the finite grid mesh of the model. The elements are subdivided into 21 s...

Drought Monitoring on South-Central California Coastal Watersheds - 2022-2023

Published by: California Department of Fish and Wildlife
Last updated: Wednesday, July 22, 2026
File types: XLSX, ZIP

Watersheds included within 2022-2023 South-Central California coast drought monitoring efforts are Chorro, San Luis Obispo, San Simeon, and Santa Rosa...