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Zengwen Dam, formerly spelled Tsengwen Dam, () is a major earthen dam in Dapu Township, Chiayi County, Taiwan on the Zengwun River. It is the third tallest dam in Taiwan, and forms the largest reservoir in Taiwan by volume.〔(【引用サイトリンク】title=Executive Yuan, R.O.C. (Taiwan) )〕 The dam regulates the flow of the Zengwun River for irrigation of the Chianan Plain, Taiwan's most productive agricultural region. There is also a 50 megawatt hydroelectric power station at the dam. The first proposals for the dam were made as early as 1939 under Japanese rule, after the completion of the Wushantou Dam to supply water to the Chianan Plain. Because Wushantou is located on a smaller stream, it receives most of its water via a diversion tunnel from the Zengwun River. However, due to a lack of regulation on the Zengwun River, water could only be diverted during the May–October rainy season. Furthermore, the Wushantou reservoir suffered from silt buildup due to sediment from the Zengwun River passing through the diversion tunnel - hence the need for a dam on the Zengwun River, to control flooding and trap silt. Due to the intervention of World War II, construction did not begin on the Zengwun Dam until October 31, 1967. An earthen cofferdam had to be built to divert the River through a pair of tunnels on the south side of the dam site. As the dam was hydraulically filled, construction started on the spillway to its north side. The power plant was completed just before the reservoir began storing water on October 31, 1973, exactly six years after groundbreaking. ==See also== *List of dams and reservoirs in Taiwan *List of power stations in Taiwan *Nanhua Dam *Wushantou Dam 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「Zengwen Dam」の詳細全文を読む スポンサード リンク
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