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643 datasets

i04 CIMIS Reference Evapotranspiration Zones v1999

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

The ETo Zones Map allows users to view the grass-reference evapotranspiration (ETo) Zones for the State of California. The map was developed by DWR an...

Methodological comparison of multiple MPA rocky ecosystem monitoring techniques

Published by: California Ocean Protection Council
Last updated: Friday, May 22, 2026
File types: PDF

California recently completed the implementation of a large network of Marine Protected Areas (MPAs) across the state via legislation called the Marin...

DACs - Census

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: ZIP

The following data were used for the Department of Water Resources' (DWR) Disadvantaged Communities (DAC) Mapping Tool: https://gis.water.ca.gov/app/d...

National Hydrography Data - NHD and 3DHP

Published by: California Department of Water Resources
Last updated: Saturday, May 23, 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...

GPS Survey of the Sacramento Valley Subsidence Network

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: PDF, CSV

In 2008, DWR developed a series of survey monuments in the Sacramento Valley to create a subsidence monitoring network. The network encompasses all o...

i12 Levee Breaks Historic

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

Dataset was built over years based on a variety of sources and ongoing incidents during the period in which the dataset steward was in the Delta Levee...

i16 Census Tract DisadvantagedCommunities 2023

Published by: California Department of Water Resources
Last updated: Friday, May 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 Tracts feature class. Th...

i16 Census Tract EconomicallyDistressedAreas 2023

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

California's Groundwater Semi-Annual Conditions Updates

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: PDF

Semi-annual Conditions Updates are more frequent supplements to the comprehensive 5-year CalGW Updates, and also provide additional perspective on the...

California Population Trends by Geography

Published by: California Department of Water Resources
Last updated: Saturday, May 23, 2026
File types: CSV, WEBSITE

The datasets provide population estimate trends from 1998 to the current year for each of California’s 58 counties, further disaggregated by Detailed ...