An aerial picture of Lake Oroville

An aerial view of Lake Oroville's Bidwell Canyon Marina.

The Oroville-Thermalito Complex is a storage and pumping operation on the Feather River. The facilities include three power plants (Hyatt Powerplant, Thermalito Diversion Dam Powerplant, and Thermalito Pumping-Generating Plant, two of which can either pump water or generate power), the State Water Project's largest reservoir (Lake Oroville), a forebay and afterbay, a fish hatchery, and a visitors center. 

As water leaves this region, it flows down Feather River and Sacramento River channels to the Sacramento-San Joaquin Delta. 




Oroville Thermalito Complex Map

Related Pages


The Lake Oroville Visitors Center

(530) 538-2219

The center is open daily from 9 a.m. to 5 p.m., except major holidays. Parking and admission are free. 





The Department of Water Resources (DWR) and California State Parks today announced that Lake Oroville State Recreation Area’s Spillway Boat Ramp area will remain open for the Labor Day holiday on September 2, 2019. The Spillway Boat Ramp opened to the public on August 9 after two years of closure for the Oroville Dam Spillways Reconstruction Projec ...


The Department of Water Resources (DWR), California Highway Patrol (CHP), California State Parks and the Butte County Sheriff’s Office today announced that Oroville Dam’s Spillway Boat Ramp will reopen on a partial schedule to the public on Friday, August 9.

A view of the Lake Oroville main spillway in Butte County, California. The spillway gates are designed with seals to minimize leakage around the edges of the gate. This modest leakage is beneficial with respect to reducing friction when the gates are operated.

The Department of Water Resources (DWR) was notified today that the Governor’s Office of Emergency Services (CalOES) submitted DWR’s Oroville spillways reimbursement appeal to the Federal Emergency Management Agency (FEMA).