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Minidoka Dam
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The Minidoka Dam is an earthfill dam on the Snake River in south central Idaho. The dam, originally completed in 1906, is east of Rupert on county highway 400; it is 86 feet (26 m) high and nearly a mile (1.6 km) in length, with a wide overflow spillway section. The dam and power plant were listed on the National Register of Historic Places in 1974.〔 Walcott Park, close to the dam, is a popular summertime picnic area. Lake Walcott State Park and the headquarters for the Minidoka National Wildlife Refuge are adjacent to the dam.
==History==
The Minidoka dam was the first Reclamation Service project in Idaho, part of the Minidoka Project of dams, reservoirs and canals. Construction began in 1904 and by 1906 most of the dam's canals and laterals were finished. By 1909, Minidoka Dam's power plant, the first federal power plant in the northwest, was completed.〔(【引用サイトリンク】url=http://www.usbr.gov/projects/Project.jsp?proj_Name=Minidoka+Project )〕 By its completion, the total cost of the dam was $5.8 million, which exceeded estimates. The Minidoka project brought water into the southeastern areas of Idaho near the cities of Rupert and Burley. The project was successful, as what was once an uninhabited sagebrush desert is now bountiful farmland. The powerplant installation was significant as a precursor of much larger projects on the Columbia River, including Bonneville Dam.〔
A study examining the possibility of raising the crest of the dam by was conducted from 2000 to 2009, but with costs ranging from $150 million to $205 million the project has not been pursued. A $50 million spillway repair project is expected to go ahead.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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