Techi Reservoir, Concrete arch dam in Heping District, Taiwan
The Techi Reservoir was formed by a thin concrete arch dam that extends 290 meters and rises 180 meters from its base to the crest. The dam spans the Dajia River and forms a long, narrow water reservoir in a deep valley between steep mountain slopes.
Construction began in 1969 following a design by French engineers André Coyne and Jean Bellier and was part of a large hydropower project in the central mountain range. The Taiwan Power Company completed the work in 1974, creating one of the tallest dams on the island.
The name joins two Chinese characters representing foundation and virtue. This designation was chosen during the opening ceremony to underline the moral importance of the structure for the region.
The power station is located underground and uses three turbines to generate electricity for the region. Water from the reservoir is also used to irrigate agricultural areas downstream in the Daxia valley.
The basin extends 14 kilometers upstream and covers an area of 454 hectares with a storage capacity of more than 175 million cubic meters. The shape of the reservoir follows the winding contours of the original river valley and creates a system of narrow inlets between forested slopes.
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