Zengwen Reservoir Sediment-Sluice Tunnel
Zengwen Dam, also spelled Tsengwen Dam, (Chinese: 曾文水壩) 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 Zengwen Reservoir (曾文水庫), the biggest reservoir in Taiwan by volume. The dam stores water for irrigation of the Chianan Plain, Taiwan's most productive agricultural region, and provides flood control along the Zengwen River which flows through Tainan City. The dam supports a 50 megawatt hydroelectric power station.