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On average, California receives about 200 million acre-feet of water per year in the form of rain and snow. However, we rarely experience an average year. Calif ...

The California Water Commission (Commission) and Central Valley Flood Protection Board (Board) are legislatively assigned to us but function independently on sp ...

California’s economy and culture have always been shaped by the abundance or scarcity of water. The Golden State’s economy, agricultural production, and populat ...

Climate change is impacting California’s water resources, as evidenced by changes in snowpack, sea level, and river flows. As we seek to adapt to and mitigate t ...

The environment is made up of living and nonliving elements – air, water, minerals, and organisms – that are located in a specific area or broadly across a land ...

The State of California entered into long-term water supply contracts (Contracts) with water agencies in the 1960s. Under the contract terms, the Department of ...

The Oroville Spillways incident has taught dam operators in California and around the world that it is crucial to improve dam safety inspections.

Since August 14, 1929, the State of California has regulated dams to prevent failure, safeguard life, and protect property. The California Water Code entrusts d ...

DWR is the California Environmental Quality Act (CEQA) lead agency for the Searsville Watershed Restoration Project which will be implemented by Stanford Univer ...

Nationwide, the removal of dams has opened up miles of river habitat for special-status migrating fish. Dam removal decisions require careful planning and shoul ...

In February 2022, the California Department of Water Resources (DWR) received $1.5 million in funding for the Juvenile Salmonid Collection System (JSCS) Pilot P ...

The Division of Environmental Services applied research projects seek innovative solutions for the water management and environmental challenges faced by DWR. P ...

In 2016, we embarked on a three-year study to investigate whether electrofishing and relocating predatory fish in Clifton Court Forebay helped improve the survi ...

The Interagency Ecological Program (IEP) is a consortium of State and federal agencies that has been conducting cooperative ecological investigations since the ...

Beginning in 1991, approximately every 10 years, a one-page irrigation survey form is mailed out to California growers to update records on what types of irriga ...

Groundwater adjudication occurs when multiple water users in a single basin file an action in superior or federal district court to resolve a dispute about wate ...

The Division of Safety of Dams (DSOD's) responsibilities have been shaped by incidents at 3 dams. The facilities were not owned, managed, or built by DWR, but t ...

The South SWP Hydropower facilities, also known as FERC Project No. 2426 or P-2426, are located at the southern end of the State Water Project (SWP), south of t ...

Pyramid Dam and Lake are located about 60 miles northwest of Los Angeles and provides water storage for the greater LA area. The dam was built between 1969 and ...