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Ōi Dam
The is a dam located between the cities of Ena and Nakatsugawa in Gifu Prefecture, Japan. It was built to produce electricity for the surrounding area. The Agi River flows through the damn. Built in 1924, the Ōi Dam was the first dam built anywhere on the Kiso River system. It is also the first hydroelectric dam built in Japan. At tall, it is the largest gravity dam in Japan after the Taishakugawa Dam in Hiroshima Prefecture. In 1983, the New Ōi Dam (新大井ダム ''Shin-Ōi Damu'') was built just downstream. Combined, they produce 80,000 kW of power. ==History== The upper portions of the Kiso River have a strong flow in terms of speed and volume, making it an ideal location for hydroelectric dams. Interest in hydroelectric dams in Japan grew greatly in 1911 when a hydroelectric law was passed. Given the technologies of the time, though, building a dam along the Kiso River was too difficult because floods often occurred.
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「Ōi Dam」の詳細全文を読む
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