California Department of Water Resources
Website: https://water.ca.gov/
The Department of Water Resources (DWR) is responsible for managing and protecting California’s water resources. DWR works with other agencies to benefit the State’s people and to protect, restore and enhance the natural and human environments.
Search California Department of Water Resources datasets
424 datasets
DWR's Basin Characterization Program
- Published by: California Department of Water Resources
- Last updated: Sunday, June 14, 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:/...
National Hydrography Data - NHD and 3DHP
- Published by: California Department of Water Resources
- Last updated: Monday, June 15, 2026
- File types: WEBSITE, ARCGIS GEOSERVICES REST API, PDF, ZIP, CSV
The USGS National Hydrography Dataset (NHD) downloadable data collection from The National Map (TNM) is a comprehensive set of digital spatial data th...
Water Quality Data
- Published by: California Department of Water Resources
- Last updated: Monday, June 15, 2026
- File types: CSV
The California Department of Water Resources (DWR) discrete (vs. continuous) water quality datasets contains DWR-collected, current and historical, ch...
Daily SWP Reservoir Elevation and Storage Data
- Published by: California Department of Water Resources
- Last updated: Monday, June 15, 2026
- File types: CSV
This dataset contains the daily elevation and storage data for the State Water Project reservoirs....
Periodic Groundwater Level Measurements
- Published by: California Department of Water Resources
- Last updated: Monday, June 15, 2026
- File types: CSV, ZIP, TXT
The DWR Periodic Groundwater Levels dataset contains seasonal and long-term groundwater level measurements collected by the Department of Water Resour...
CA Urban Retail Water System Water Loss Annual Loss Audit Data
- Published by: California Department of Water Resources
- Last updated: Monday, June 15, 2026
- File types: CSV
This dataset contains annual validated water loss audit reports submitted to the Department of Water Resources by California urban retail water suppli...
County SB 552 Status Dashboard Data and Drought Resilience Plans
- Published by: California Department of Water Resources
- Last updated: Monday, June 15, 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....
Juvenile Salmonid Collection System (JSCS) Pilot Project Fish and Environmental Data – McCloud River and Shasta Reservoir (2022–2025)
- Published by: California Department of Water Resources
- Last updated: Monday, June 15, 2026
- File types: CSV, PDF
The California Department of Water Resources (DWR) conducted the Juvenile Salmonid Collection System (JSCS) Pilot Project from 2022 — 2025 to test new...
Spatial CIMIS ETo maps — Daily Reference Evapotranspiration for California
- Published by: California Department of Water Resources
- Last updated: Sunday, June 14, 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...
Water Shortage Vulnerability Analysis Archive
- Published by: California Department of Water Resources
- Last updated: Sunday, June 14, 2026
- File types: FILE GEODATABASE, ZIP, EXCEL (XLSX)
This page is meant to act as an archival repository for previous Water Shortage Vulnerability analyses, which includes the Water Shortage Vulnerabilit...