State and Federal Government Collaborate to Manage California’s Water Supply Under New Challenges


The Delta

SACRAMENTO, CA Yesterday, the Department of Water Resources (DWR) and the Bureau of Reclamation reached agreement on updating how the State Water Project (SWP) and Central Valley Water Project (CVP) are operated to meet environmental regulations.

“The state and federal projects are intertwined, and we have a joint interest and responsibility to ensure our water system meets California’s needs especially as conditions change,” said DWR Director Karla Nemeth.

The Coordinated Operation Agreement (COA) was originally signed in 1986 and defines how the state and federal water projects share water quality and environmental flow obligations imposed by regulatory agencies. The agreement calls for periodic review to determine whether updates are needed in light of changed conditions. After completing a joint review process, DWR and Reclamation agreed to an addendum to the COA to reflect water quality regulations, biological opinions and hydrology updated since the agreement was signed. 

DWR and the Bureau also signed an agreement to formalize the cost sharing formula for projects needed to meet joint responsibilities under the Endangered Species Act (ESA). The new agreement calls for costs to be shared equitably between the state and federal projects for work to meet joint responsibilities under the ESA, including monitoring and habitat restoration. View the cost sharing agreement.

Erin Mellon, Assistant Director, Public Affairs, Department of Water Resources
(916) 651-2440 |