East Park Dam, Arch dam in Colusa County, United States.

East Park Dam is a curved concrete gravity dam on Little Stony Creek, about 30 miles southwest of Orland in Colusa County, California. Completed in 1910, it stands 92 feet high and holds two sluice gates; its control house is built in the shape of a pagoda. The reservoir behind it stores 51,000 acre-feet, and the spillway about 2,000 feet south of the dam carries curved labyrinth fins.

The United States Bureau of Reclamation completed this dam in 1910 as part of the Orland Project to support agricultural water needs. The construction represented an important step in developing water resources for the region.

The dam's control house is built in the shape of a pagoda, an unusual choice for a Bureau of Reclamation structure. About 2,000 feet south of the dam, on the reservoir's western side, the spillway carries a set of curved labyrinth fins. The Orland Unit Water Users' Association has run the project since October 1, 1954.

East Park Dam lies about 30 miles (48 km) southwest of Orland, at the northern end of the California Central Valley, reached via Colusa County roads near Lodoga. The spillway sits about 2,000 feet (610 m) south of the dam on the reservoir's western side. Before fishing, check the California OEHHA advisory for mercury and PCBs in fish from East Park Reservoir.

The spillway lies about 2,000 feet south of the dam on the reservoir's western side, where its curved labyrinth fins form an unusual pattern. The control house is built in the shape of a pagoda. The reservoir holds 51,000 acre-feet.