California Department of Water Resources Suisun Marsh is a rich and vibrant environment, teeming with growth and wildlife. DWR is harnessing that natural productivity to explore a new approach to ecosystem improvement – one that works with the marsh’s ability to produce the food and habitat native species need to thrive.

Lake Oroville Update - September 18, 2026. Updates from the California Department of Water Resources.

California Department of Water Resources concluded its water quality study, studying water in areas affected by the Park Fire.

Throughout California’s Central Valley, Chinook salmon and steelhead trout migrate between the ocean and inland rivers to spawn during their lifecycles. Ahead of the fall spawning season, DWR completed a salmonid habitat improvement project in the low-flow channel of the Feather River in Oroville, placing approximately 8,000 cubic yards of spawning ...

Lake Oroville Update - September 11, 2026. Updates from the California Department of Water Resources.

The Lake Oroville Update for Sept. 4, 2026 featuring the Brad Freeman Trail from the California Department of Water Resources.

The California Department of Water Resources conduct surveys in the hot sun at the Salton Sea to monitor the desert pupfish.