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Crystal Dam
Crystal Dam is a double curvature, concrete thin arch dam located six miles downstream from Morrow Point Dam on the Gunnison River in Colorado, USA. Crystal Dam is the newest of the three dams in Curecanti National Recreation Area; construction on the dam was finished in 1976. The dam impounds Crystal Reservoir. Crystal Dam and reservoir are part of the Bureau of Reclamation's Wayne N. Aspinall Unit of the Colorado River Storage Project, which retains the waters of the Colorado River and its tributaries for agricultural and municipal use in the American Southwest.〔(【引用サイトリンク】url=http://www.usbr.gov/projects/Project.jsp?proj_Name=Colorado%20River%20Storage%20Project )〕〔(【引用サイトリンク】url=http://www.usbr.gov/projects/Facility.jsp?fac_Name=Crystal%20Dam )〕 The dam's primary purpose is hydroelectric power generation. ==Description== Crystal Dam, like the higher Morrow Point Dam farther upstream, is a thin-shell arch dam, primarily planned to generate hydroelectric power. Unlike its upstream companions, excess water spills over the top of the dam through a notched-out ungated spillway that can create a waterfall in times of overflow.Under normal conditions the river flows though an penstock to the 28 MW turbine. The dam is deep within the Black Canyon of the Gunnison in pre-Cambrian metamorphic rock.〔(【引用サイトリンク】url=http://www.usbr.gov/projects/Facility.jsp?fac_Name=Crystal+Dam )〕
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「Crystal Dam」の詳細全文を読む
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