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.

For more information, a one page CEDEN Fact Sheet and nine page Information Document are available for download.

News & Highlights

Template Changes
The 2016 review of the CEDEN data entry templates resulted in changes that are being implemented on Friday, January 13, 2017.

Providing Data for the 303(d) List
See our new page regarding providing data to be assessed for the development of California’s Clean Water Act Section 303(d) list.