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175 datasets

California Land Ownership Public

Published by: CAL FIRE
Last updated: Thursday, June 25, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This dataset was updated May, 2026. This is a hosted view for the public of the California Land Ownership layer. This ownership dataset was gener...

South Coast State of the Region Report, Snapshots and Supplemental Reports All Habitats 2011-2015

Published by: California Ocean Protection Council
Last updated: Friday, June 19, 2026
File types: PDF

State of the South Coast Region-Results from Baseline Monitoring of Marine Protected Areas 2011-2015. Learn about the biological, ecological, oceanogr...

SVSim: Sacramento Valley Groundwater-Surface Water Simulation Model

Published by: California Department of Water Resources
Last updated: Thursday, June 25, 2026
File types: ZIP, PDF, CSV, XLSX, .ZIP

The Department of Water Resources (DWR) has developed a new model, the Sacramento Valley Groundwater-Surface Water Simulation Model (SVSim). This new ...

Surface Water - Toxicity Results

Published by: California State Water Resources Control Board
Last updated: Thursday, May 28, 2026
File types: PDF, CSV, ZIP

Surface water toxicity data from the [California Environmental Data Exchange Network](https://ceden.waterboards.ca.gov) (CEDEN). CEDEN is the Californ...

CalEnviroScreen 2.0

Published by: California Office of Environmental Health Hazard Assessment
Last updated: Wednesday, October 23, 2019
File types: CSV, XLSX, PDF

The Office of Environmental Health Hazard Assessment (OEHHA), on behalf of the California Environmental Protection Agency (CalEPA), developed Californ...

DWR's Basin Characterization Tools - BCTools

Published by: California Department of Water Resources
Last updated: Wednesday, June 24, 2026
File types: PNG, ZIP, .ZIP, PDF

*Back to [Basin Characterization Program webpage](https://data.cnra.ca.gov/dataset/dwr-basin-characterization "Basin Characterization Program webpage"...

Data for Calculating Efficient Outdoor Water Uses

Published by: California Department of Water Resources
Last updated: Thursday, June 25, 2026
File types: CSV, XLS, XLSX

October 31, 2025 (Final DWR Data) The 2018 Legislation required DWR to provide or otherwise identify data regarding the unique local conditions to ...

CalEnviroScreen 3.0 Results

Published by: California Office of Environmental Health Hazard Assessment
Last updated: Wednesday, October 23, 2019
File types: PDF, CSV, SHP

CalEnviroScreen is a mapping tool that helps identify California communities that are most affected by many sources of pollution, and where people are...

Surface Water - Freshwater Harmful Algal Blooms

Published by: California State Water Resources Control Board
Last updated: Wednesday, June 3, 2026
File types: PDF, CSV

Attention: Please note that the Freshwater Harmful Algal Bloom resources on the California Open Data Portal will not be updated from June 3 through Ju...

California's Groundwater Update 2020 (Bulletin 118)

Published by: California Department of Water Resources
Last updated: Thursday, June 25, 2026
File types: PDF, XLSX, XLS, ZIP, SHP

California's Groundwater Update 2020 (CalGW) is California's foremost technical publication on groundwater in the state of California. CalGW, formally...