DWR Updates

An aerial view shows high water conditions at Enterprise Bridge located at Lake Oroville in Butte County, California. Photo taken May 20, 2025.

Lake Oroville Update - May 23, 2025

Published: May 23, 2025

An inspector at DWR’s North Thermalito Forebay watercraft inspection facility holds golden mussels found on a pontoon boat on Wednesday, May 21.

Golden Mussels Found During Boat Inspection at Thermalito Forebay

The Department of Water Resources’ (DWR) newly implemented invasive mussel inspection program for State Water Project (SWP) facilities in Oroville uncovered golden mussels attached to a pontoon boat late Wednesday afternoon in Butte County.

Published: May 22, 2025

A drone view of Bidwell Bar Bridge at Lake Oroville in Butte County, California. Photo taken March 11, 2025.

Lake Oroville Update - May 16, 2025

Lake Oroville Update for May 16, 2025

Published: May 16, 2025

California Department of Water Resources Aquatic Adventure Camp held at Lake Del Valle in Alameda County, California. The program teaches disadvantaged children how to swim, about water safety, and how to rescue others in the water. Photo taken August 11, 2023.

Safe, Summer Fun Along the State Water Project

Summer is around the corner, and many people are heading to California’s lakes and reservoirs to cool off. The State Water Project’s reservoirs are the perfect place to recreate while making water safety your top priority and having fun outdoors.

Published: May 16, 2025

A drone view of Bidwell Canyon Marina at Lake Oroville in Butte County, California. Photo taken March 11, 2025.

Lake Oroville Update - May 14, 2025

Lake Oroville Update for May 14, 2025

Published: May 14, 2025

A panorama drone view of Middle Fork and South Fork of the Feather River, and Bidwell Bar Bridge, at Lake Oroville in Butte County, California. Photo taken March 11, 2025.

Lake Oroville Update - May 9, 2025

Lake Oroville Update for May 9, 2025

Published: May 09, 2025

The aerial view looks south toward the California Aqueduct near Jenson Avenue and the Panoche Creek Shipon in the agricultural rich Central Valley of Fresno County, California. The aqueduct is a critical part of the State Water Project that carries water from the Sacramento-San Joaquin Delta to the San Joaquin Valley and Southern California. Photo taken May 13, 2023.

Study Finds That Subsidence, Groundwater Over-Pumping Could Limit Future Water Deliveries if No Action is Taken

A recently released technical report concludes that the sinking of land in the Central Valley due to over-pumping of groundwater, referred to as subsidence, has restricted the amount of water the State Water Project (SWP) can deliver in a year by 3 percent.

Published: May 06, 2025