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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 Oak Grove Hydroelectric Project ： ウィキペディア英語版 Oak Grove Hydroelectric Project The Oak Grove Hydroelectric Project is a 44 megawatt hydroelectric plant operated by Portland General Electric (PGE) on the Oak Grove Fork Clackamas River. Water for this project is held by three lakes, built between 1923 and 1956.〔 (PGE power plant capacity ) 〕 The dam creates the impoundment Lake Harriet. == History == In 1907, the Southern Pacific Company began to acquire water rights for the Oak Grove fork.〔 (FWS: Eagle Creek: Appendix B: history ) 〕 These rights were transferred in 1911 to the Portland Railway, Light and Power Company,〔 which later became PGE. In 1923, the concrete diversion dam at Lake Harriet was completed.〔 This lake holds 〔 (FERC EIS P-2195 ) 〕 with a surface area of .〔 (Photo tour: Harriet Dam )〕 A pipeline goes downstream from Lake Harriet to the powerhouse.〔 Power generation from the Oak Grove fork began in August 1924.〔Electrifying Eden: Craig Wollner, p 111〕 In 1953, Frog Lake was completed, adding of storage with of surface, which was later reduced to on in 1997.〔〔 Finally, in 1956,〔 the compacted-earth dam for Timothy Lake was completed, creating the largest lake in the system at and .〔 The Oak Grove Powerhouse contains two Francis turbines.〔 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「Oak Grove Hydroelectric Project」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.