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REMOVAL OF SAVAGE RAPIDS DIVERSION DAM - PART TWO

机译：拆除抢救分水坝-第二部分

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The Removal of Savage Rapids Diversion Dam - Part One, was presented at a United States Society on Dams (USSD) Technical Workshop on Dam Decommissioning in 2008. Part One gave a detailed description of the facility, the reasons for removing the dam, the alternatives considered, discussed the design requirements, and presented the preferred alternative for dam removal. Part Two will discuss the actual removal of the dam which took place in 2009.rnConstructed in 1921-22 by private developers, Savage Rapids Diversion Dam was utilized to divert flows each year during the irrigation season from mid-May to mid-October. Despite having a fish ladder on each abutment, the dam was considered to be a major impediment to anadromous fish migration (steelhead, Chinook, and Coho) in the Rogue River. The recommended least-cost alternative to improve fish passage and maintain irrigation diversion was to construct a new diversion facility and remove a large portion of the existing dam. Partial removal of the dam would restore fish passage and river navigation to natural conditions.rnSavage Rapids Diversion Dam continued to operate as a diversion facility through the 2008 irrigation season. Removal of the dam began in April 2009 and was completed by December 2009.
机译：于2008年在美国水坝学会（USSD）进行大坝退役技术研讨会上介绍了拆除急流急流大坝-第一部分。详细介绍了该设施，拆除大坝的原因，替代方案考虑，讨论了设计要求，并提出了拆除大坝的首选方案。第二部分将讨论在2009年进行的大坝的实际拆除。rn由私人开发商在1921-22年建造的Savage Rapids导流大坝每年在5月中旬至10月中旬的灌溉季节被用来导流。尽管在每个桥台上都有鱼梯，但该水坝被认为是流氓河中鱼类迁徙的主要障碍（硬头，奇努克和科霍）。推荐的成本最低的替代方案来改善鱼的通过并维持灌溉的转移，是建造一个新的转移设施并拆除现有大坝的大部分。大坝的部分拆除将使鱼的通行和河流通航恢复到自然状态。野蛮急流引水大坝在2008年灌溉季节一直作为引水设施运行。大坝的拆除工作于2009年4月开始，并于2009年12月完成。

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