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5 datasets

Interagency Ecological Program: Discrete water quality monitoring in the Sacramento-San Joaquin Bay-Delta, collected by the Environmental Monitoring Program, 2000-2018.

Published by: California Department of Water Resources
Last updated: Friday, April 3, 2026
File types:

The Interagency Ecological Program’s (IEP) Environmental Monitoring Program (EMP) has historically monitored discrete water quality and nutrients in t...

Water Quality Data

Published by: California Department of Water Resources
Last updated: Saturday, April 4, 2026
File types: CSV

The California Department of Water Resources (DWR) discrete (vs. continuous) water quality datasets contains DWR-collected, current and historical, ch...

Surface Water - Freshwater Harmful Algal Blooms

Published by: California State Water Resources Control Board
Last updated: Saturday, April 4, 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...

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...

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...