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The California Department of Water Resources and the U.S. Bureau of Reclamation develop and maintain the California Simulation Model 3 (CalSim 3). CalSim 3 is a ...

Blue-green algae are a natural part of the ecosystem. Algae can “bloom” or grow rapidly under ideal conditions, which include warm water temperature, calm condi ...

Castaic Lake, one of the State Water Project's largest recreational lakes and the terminal of its west branch, provides emergency storage in the event of a shut ...

Thank you for your interest in teaching about water. To help you engage your students, the Department of Water Resources offers the following water education ma ...

Bulletin 132, Management of the California State Water Project, is an annual series reporting SWP water supply planning, construction, finance, management, and ...

Our restoration programs are State Water Project (SWP)-funded to comply with the U.S. Fish and Wildlife Service (USFWS) and National Marine Fisheries Service (N ...

DWR and the University of California, Davis have developed the California Seasonal Application Efficiency Program to assess how efficiently irrigation water is ...

There is clear evidence of the vulnerabilities in the Sacramento-San Joaquin Delta (Delta) posed by climate change and earthquake risk. As sea levels continue t ...

The Department of Water Resources is both a major producer and consumer of electricity. In fact, the State Water Project (SWP) is the largest consumer of electr ...

We manage the multipurpose State Water Project (SWP) that provides water supply, flood control, fish and wildlife habitat, and outstanding recreational opportun ...

DWR’s four regional offices and headquarters provide technical guidance and assistance to local and regional organizations to help solve local water and environ ...

Lake Oroville, located about 75 miles north of Sacramento, is a favorite destination for thousands of visitors each year. The lake has more than 167 miles of sh ...

Established in 1956 by the California State Legislature, we protect, conserve, develop, and manage much of California's water supply. This includes the State Wa ...

The Delta Conveyance Deep Dive video series continues with “Building the Tunnel Part Two”.

Due to forecasted inflows into Lake Oroville, DWR is preparing for the potential use of Oroville’s main spillway next week.

DWR and our main contractor Kiewit are pushing forward to wrap up construction of the Oroville main spillway and emergency spillway.

Lake Oroville Community Update for August 30, 2019.

Read the Lake Oroville Community Update for January 31, 2020.

Lake Oroville Community Update for January 24, 2020.

Spring-run Chinook used to be the dominant run of salmon in California’s Central Valley, with more than a million spawners spread across nearly every river and ...