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410 datasets

i03 Delta PrimarySecondary Zones

Published by: California Department of Water Resources
Last updated: Thursday, December 4, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Delta Primary Zone Boundary The history of the primary zone boundary is as follows: the Primary Zone was defined in the 1992 Delta Flood Protection Ac...

National Hydrography Data - NHD and 3DHP

Published by: California Department of Water Resources
Last updated: Thursday, December 4, 2025
File types: PDF, ZIP, WEBSITE, ARCGIS GEOSERVICES REST API, CSV, WEB VIDEOS

The USGS National Hydrography Dataset (NHD) downloadable data collection from The National Map (TNM) is a comprehensive set of digital spatial data th...

i03 dwr region offices

Published by: California Department of Water Resources
Last updated: Thursday, December 4, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Description for i03_DAU_county_cnty2018 is as follows:Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metada...

San Francisco Bay and Sacramento-San Joaquin Delta DEM version 3 (Superseded)

Published by: California Department of Water Resources
Last updated: Thursday, December 4, 2025
File types: JPEG, ZIP

# Superseded: A more recent version of this product appears here: https://data.cnra.ca.gov/dataset/san-francisco-bay-and-sacramento-san-joaquin-de...

San Francisco Bay and Sacramento-San Joaquin Delta DEM for Modeling, Version 4.2

Published by: California Department of Water Resources
Last updated: Thursday, December 4, 2025
File types: PNG, ZIP

# SUPERSEDED --> See version 4.3 https://data.cnra.ca.gov/dataset/san-francisco-bay-and-sacramento-san-joaquin-delta-dem-for-modeling-version-4-3 ...

DSM2 Input 2025-05-28 historical update

Published by: California Department of Water Resources
Last updated: Thursday, December 4, 2025
File types: ZIP, HTML, PDF

The following is a summary of the features from the DSM2 Monitoring Special Study (MSS) release that were merged into the DSM2 2023 Full Calibratio...

DWR's Basin Characterization Program

Published by: California Department of Water Resources
Last updated: Friday, December 5, 2025
File types: BIN, .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 Hydrologic Regions

Published by: California Department of Water Resources
Last updated: Thursday, December 4, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Description for i03_DAU_county_cnty2018 is as follows:Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metada...

Groundwater Basin Boundary Descriptions - San Francisco Region (2-XXX Basins)

Published by: California Department of Water Resources
Last updated: Thursday, December 4, 2025
File types: PDF

This dataset includes the official groundwater basin boundary descriptions for California's 515 groundwater basins. To make locating descriptions easi...

DSM2 Georeferenced Model Grid

Published by: California Department of Water Resources
Last updated: Thursday, December 4, 2025
File types: ZIP, PDF, ARCGIS DESKTOP MAP PACKAGE, ARCGIS PRO MAP PACKAGE

ArcGIS and QGIS map packages, with ESRI shapefiles for the DSM2 Model Grid. These are not finalized products. Locations in these shapefiles are approx...