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Water Quality Monitoring Council's
data interpretation web portal
The California Environmental Data Exchange Network (CEDEN)
is a central location to find and share information about California’s water bodies, including streams, lakes, rivers, and the coastal ocean. Many groups in California monitor water quality, aquatic habitat, and wildlife health to ensure good stewardship of our ecological resources. CEDEN aggregates this data and makes it accessible to environmental managers and the public.
*Submitting data for the Integrated Report? Please refer to instructions for submitting data suitable for Integrated Report assessment
For more information, a one page CEDEN Fact Sheet is available for download.
New! The 2026 Integrated Report Data Solicitation period is now open! The 2026 Integrated Report will assess data collected from waterbodies in the North Coast, Lahontan and Colorado River Basin Regional Water Boards, and the San Joaquin sub-basin of the Central Valley Regional Water Board (please refer to an interactive map of the Regional Water Boards). To be considered for the 2026 Integrated Report, data must be submitted to CEDEN before the cut-off date of October 21, 2022. Guidance on submitting data and links to additional information about the submission requirements are found in the instructions for Integrated Report assessment.
State Water Resources Control Board 1001 I Street Sacramento, CA 95814