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East Park Dam is an agricultural irrigation dam and reservoir built by the United States Bureau of Reclamation, on Little Stony Creek, about southwest of Orland, California on the northern end of the Californian Central Valley. The dam was completed in 1910. Its main structure is a curved, thick-arch concrete gravity dam, high, with two sluice gates. The control house is in the shape of a pagoda, and the spillway, about south of the dam on the western side of the reservoir, features an eccentric set of curved labyrinth-spillway fins. The reservoir has a storage capacity of . ==The Orland Project== The East Park dam and reservoir was one element of the Orland Project in the area, one of the earliest, and one of the smallest, ever undertaken by the Bureau.〔http://www.usbr.gov/projects/Project.jsp?proj_Name=Orland+Project〕 Other components of the project include: * the 1928 Stony Gorge Dam and Reservoir, on Stony Creek about 18 miles downstream from East Park Dam, an early example of an Ambursen-type dam * the 1914 Rainbow Diversion Dam * the 1913 Northside Diversion Dam, rebuilt in the 1950s * and a canal and distribution system with 17 miles of canals and 117 miles of lateral connections Still functioning, the local Orland Unit Water Users' Association has operated the project since October 1, 1954. It was added to the National Register of Historic Places in the 1980s. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「East Park Dam」の詳細全文を読む スポンサード リンク
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