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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Chief Joseph Dam ： ウィキペディア英語版 Chief Joseph Dam The Chief Joseph Dam is a concrete gravity dam on the Columbia River, upriver from Bridgeport, Washington. The dam is upriver from the mouth of the Columbia at Astoria, Oregon. It is operated by the USACE Chief Joseph Dam Project Office, and the electricity is marketed by the Bonneville Power Administration. ==History== The dam was authorized as Foster Creek Dam and Powerhouse for power generation and irrigation by the ''River and Harbor Act of 1946''. The ''River and Harbor Act of 1948'' renamed the project Chief Joseph Dam in honor of the Nez Perce chief who spent his last years in exile on the Colville Indian Reservation. Because of its lack of fish ladders, Chief Joseph Dam completely blocks salmon migration to the upper Columbia River system. Construction began in 1949, with the main dam and intake structure completed in 1955. Installation of the initial generating units was completed in 1958. Eleven additional turbines were installed between 1973 and 1979, and the dam and lake were raised , boosting the capacity to , making Chief Joseph Dam the second largest hydroelectric power producer in the United States.〔(Chief Joseph Dam ), US Army Corps of Engineers〕 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「Chief Joseph Dam」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.