Water
Themes include well water, water quality, wastewater, watershed, storm water, drinking water.Popular datasets
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495 datasets
Surface Water - Freshwater Harmful Algal Blooms
- Published by: California State Water Resources Control Board
- Last updated: Thursday, February 26, 2026
- File types: PDF, CSV
Freshwater harmful algal bloom (HAB) data from the Freshwater Harmful Algal Bloom (FHAB) data system. The FHAB data system is the California State Wat...
Groundwater Trading
- Published by: California Department of Water Resources
- Last updated: Friday, February 27, 2026
- File types: PDF
The Water Resiliency Portfolio (2020) tasked the four State agencies to “create flexibility for GSAs to trade water within basins by enabling and ince...
WRIMS GUI
- Published by: California Department of Water Resources
- Last updated: Friday, February 27, 2026
- File types: ZIP, DOCX, PDF, JAR, DLL, LOG, BAT, APPLICATION/X-MSDOS-PROGRAM
WRIMS GUI related software package and documents...
DWR's Basin Characterization Program
- Published by: California Department of Water Resources
- Last updated: Friday, February 27, 2026
- File types: .ZIP, ZIP, FILE GEODATABASE, PDF
DWR has a long history of studying and characterizing California’s groundwater aquifers as a part of [California’s Groundwater (Bulletin 118)](https:/...
National Hydrography Data - NHD and 3DHP
- Published by: California Department of Water Resources
- Last updated: Friday, February 27, 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...
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....
California Population Trends by Geography
- Published by: California Department of Water Resources
- Last updated: Friday, February 27, 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 ...