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416 datasets

Water Quality Data

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: CSV

The California Department of Water Resources (DWR) discrete (vs. continuous) water quality datasets contains DWR-collected, current and historical, ch...

i12 Canals and Aqueducts local

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Dataset represents centerlines of major water project canals that are managed by local area government agencies or entities. This dataset does not con...

Sustainable Groundwater Management Act (SGMA) Basin Prioritization

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: XLSX, PDF, CSV, ZIP

The following data and resources were used for the SGMA Basin Prioritization of California’s 515 groundwater basins and subbasins. The Department of W...

Water Loss Audit Data From Urban Retail Water Suppliers (Superseded)

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: XLSX

September 2025 Note: This original 2019 data is superseded by a more recent data which captures newer submissions and resubmissions of older data repo...

Groundwater Basin Boundary Descriptions - Santa Ana Region (8-XXX Basins)

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: PDF

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

Groundwater Basin Boundary Descriptions - San Diego Region (9-XXX Basins)

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: PDF

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

Groundwater Basin Boundary Descriptions - South Coast Region (4-XXX Basins)

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: PDF

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

Water Shortage Vulnerability Datasets

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: HTML

This is the landing page for navigating to all of the water shortage vulnerability datasets provided by California Department of Water Resources. Plea...

i03 WaterDistricts

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This dataset represents polygon boundaries of all public water agencies in California including public water systems, agricultural water districts, ur...

Groundwater Basin Boundary Descriptions - Central Coast Region (3-XXX Basins)

Published by: California Department of Water Resources
Last updated: Sunday, January 18, 2026
File types: PDF

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