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789 datasets

South Delta Monitoring Special Studies (MSS) Modeling Inputs and Selected Outputs

Published by: California Department of Water Resources
Last updated: Wednesday, May 27, 2026
File types: ZIP, DOCX, ZIP, PARQUET, YML, YML, DOCX, PARQUET, PYTHON

This dataset includes the MSS version of model inputs and outputs for the Delta Simulation Model 2 and Bay-Delta SCHISM. To perform DSM2 simulation...

i16 Census County DisadvantagedCommunities 2023

Published by: California Department of Water Resources
Last updated: Wednesday, May 27, 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. ...

Refuge Delivery Points - Central Valley Project Improvement Act [ds2638]

Published by: California Department of Fish and Wildlife
Last updated: Wednesday, May 27, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Data was compiled to provide a singular visual representation of delivery points used to complete water deliveries to CVPIA wetland habitat area. The ...

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

Published by: California Department of Water Resources
Last updated: Tuesday, May 26, 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...

i16 Census County EconomicallyDistressedAreas 2023

Published by: California Department of Water Resources
Last updated: Wednesday, May 27, 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...

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

Published by: California Department of Water Resources
Last updated: Wednesday, May 27, 2026
File types: PDF

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

i16 Census Place DisadvantagedCommunities 2023

Published by: California Department of Water Resources
Last updated: Wednesday, May 27, 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 Place feature class. A C...

i16 Census Place EconomicallyDistressedAreas 2023

Published by: California Department of Water Resources
Last updated: Wednesday, May 27, 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 Counties feature class, ...

COVID-19 Wastewater Surveillance Data. California

Published by: California State Water Resources Control Board
Last updated: Tuesday, September 10, 2024
File types: CSV, DOCX, XLSX

NOTICE: As of September 6, 2024, the wastewater surveillance dataset will now be hosted on: https://data.chhs.ca.gov/dataset/wastewater-surveillance-d...

Bay-Delta SCHISM Atmospheric Collection v2.0

Published by: California Department of Water Resources
Last updated: Wednesday, May 27, 2026
File types: TAR.GZ

This dataset collects together collated and interpolated data required to run schism and are formatted for use in the model. SCHISM requires atmopheri...