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Kanna Dam
The is a concrete gravity dam on the Kanna River in Ginoza, Okinawa Prefecture, Japan. The purpose of the dam is water supply and flood control. After studies were carried out in the 1970s, construction on the dam began in 1982 and it was completed in 1992.〔 The dam is tall and long. In order to retain the reservoir, a tall and long saddle dam was constructed directly northeast of the dam.〔 A fish ladder was installed on the dam during construction to assist the migration of fish, shrimp and crabs. Mangroves downstream of the dam were restored after construction and the area is a tourist destination along with a habitat for water fowl. ==References==
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「Kanna Dam」の詳細全文を読む
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