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4400 datasets

National Hydrography Data - NHD and 3DHP

Published by: California Department of Water Resources
Last updated: Monday, March 2, 2026
File types: PDF, ZIP, WEBSITE, ARCGIS GEOSERVICES REST API, CSV, WEB VIDEOS

The USGS National Hydrography Dataset (NHD) downloadable data collection from The National Map (TNM) is a comprehensive set of digital spatial data th...

Stormwater - Regulatory (including Enforcement Actions) Information and Water Quality Results

Published by: California State Water Resources Control Board
Last updated: Tuesday, February 24, 2026
File types: CSV

This dataset looks at all aspects of storm water management in California as managed and regulated by the State Water Resources Control Board, from th...

Planting Location - CDFW [ds2897]

Published by: California Department of Fish and Wildlife
Last updated: Monday, March 2, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Fish planting locations of the inland waters of California. This data is updated by CDFW Hatchery staff. This data is part of the CDFW Fishing Guide h...

Surface Water - Toxicity Results

Published by: California State Water Resources Control Board
Last updated: Tuesday, February 24, 2026
File types: PDF, CSV, ZIP

Surface water toxicity data from the [California Environmental Data Exchange Network](https://ceden.org/) (CEDEN). CEDEN is the California State Water...

Surface Water - Water Quality Regulated Facility Information

Published by: California State Water Resources Control Board
Last updated: Tuesday, February 24, 2026
File types: CSV, XLSX, PDF

Information regarding site visits of facilities that discharge wastewater, from the [California Integrated Water Quality System](https://www.waterboar...

Surface Water - Water Quality Regulatory Information

Published by: California State Water Resources Control Board
Last updated: Tuesday, February 24, 2026
File types: CSV, PDF

This data set lists active and historical enforcement actions records that are stored in the [California Integrated Water Quality System](https://www....

Vegetation - Mojave Desert National Preserve [ds3128]

Published by: California Department of Fish and Wildlife
Last updated: Monday, March 2, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This study presents a comprehensive vegetation mapping inventory project undertaken in Mojave National Preserve (MOJA) and Castle Mountains National M...

Baja California Coachwhip Range - CWHR R098 [ds1790]

Published by: California Department of Fish and Wildlife
Last updated: Monday, March 2, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Vector datasets of CWHR range maps are one component of California Wildlife Habitat Relationships (CWHR), a comprehensive information system and predi...

DCSS Distributed Collections by Assistance Type

Published by: California Department of Child Support Services
Last updated: Monday, March 2, 2026
File types: CSV, DOCX, ZIP

This data table provides distributed collection data for California child support cases. The data is sorted by counties and categorized as Current or ...

California Population Trends by Geography

Published by: California Department of Water Resources
Last updated: Monday, March 2, 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 ...