Yongheshan ReservoirThe Yongheshan Reservoir is a reservoir in Sanwan Township, Miaoli County, Taiwan.HistoryThe dam was constructed starting in July 1980 and completed in October 1984.ArchitectureThe water level of the reservoir stands at a height of 89.5 meters. The reservoir features automatic overflow side spillway. The reservoir has an effective capacity of 28,096,000 m3.FunctionThe reservoir supplies water to public sectors for about 187,000 m3 per day.