Water
Themes include well water, water quality, wastewater, watershed, storm water, drinking water.Popular datasets
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496 datasets
Surface Water - Freshwater Harmful Algal Blooms
- Published by: California State Water Resources Control Board
- Last updated: Tuesday, March 17, 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...
Stormwater - Regulatory (including Enforcement Actions) Information and Water Quality Results
- Published by: California State Water Resources Control Board
- Last updated: Monday, March 16, 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...
Drinking Water - SAFER Dashboard Failing and At-Risk Drinking Water Systems
- Published by: California State Water Resources Control Board
- Last updated: Monday, March 16, 2026
- File types: PDF, EXCEL (XLSX), CSV
The Division of Drinking Water (DDW) identifies Failing and At-Risk community water systems and K-12 non-transient, non-community schools. This inform...
Periodic Groundwater Level Measurements
- Published by: California Department of Water Resources
- Last updated: Tuesday, March 17, 2026
- File types: CSV, ZIP, TXT
The DWR Periodic Groundwater Levels dataset contains seasonal and long-term groundwater level measurements collected by the Department of Water Resour...
CA Urban Retail Water System Water Loss Annual Loss Audit Data
- Published by: California Department of Water Resources
- Last updated: Tuesday, March 17, 2026
- File types: CSV
This dataset contains annual validated water loss audit reports submitted to the Department of Water Resources by California urban retail water suppli...
WDL Ground Surface Displacement - Land Subsidence Monitoring
- Published by: California Department of Water Resources
- Last updated: Tuesday, March 17, 2026
- File types: CSV
Borehole extensometers are a more site specific method of measuring land subsidence. These instruments consist of a pipe or cable anchored at the bott...
Continuous Groundwater Level Measurements
- Published by: California Department of Water Resources
- Last updated: Tuesday, March 17, 2026
- File types: CSV
DWR continuous groundwater level measurements contains continuous time-series data from automated recorders at sites operated by the Department of Wa...
DWR Continuous Data Download Links
- Published by: California Department of Water Resources
- Last updated: Tuesday, March 17, 2026
- File types: CSV
Stations and a table of download links for time-series data, from DWR's continuous environmental monitoring database. For more information, see DWR's...
California Population Trends by Geography
- Published by: California Department of Water Resources
- Last updated: Tuesday, March 17, 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 ...
SWAMP Data Dashboard
- Published by: California State Water Resources Control Board
- Last updated: Thursday, March 12, 2026
- File types: PDF, CSV
This dataset supports the [SWAMP Data Dashboard](https://gispublic.waterboards.ca.gov/swamp-data/), a public-facing tool developed by the [Surface Wat...