The Ma'an Dam (, 'Saddle Dam') is a concrete gravity

barrage dam A barrage is a type of low-head, diversion dam which consists of a number of large gates that can be opened or closed to control the amount of water passing through. This allows the structure to regulate and stabilize river water elevation up ...

on the

Dajia River Dajia River () is the fifth-longest river in Taiwan located in the north-central of the island. It flows through Taichung City for 142 km. The sources of the Dajia are: Hsuehshan and Nanhu Mountain in the Central Mountain Range. The Dajia R ...

in Heping District,

Taichung Taichung (, Wade–Giles: ''Tʻai²-chung¹'', pinyin: ''Táizhōng''), officially Taichung City, is a special municipality located in central Taiwan. Taichung has approximately 2.8 million residents and is the second most populous city of Taiw ...

Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...

. The dam is the final stage of a cascade of

hydroelectric Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...

power plants along the

and is located below the

Tienlun Dam Tienlun Dam () is a concrete gravity dam on the Dajia River in Heping District, Taichung, Taiwan. Built from 1952 to 1956, the dam is the fourth in a cascade of hydroelectric dams along the Dajia River, located upstream from the Ma'an Dam and d ...

. Built from 1992 to 1998, the dam is high and long, storing up to in its reservoir. The service spillway of the dam consists of nine gates with a combined capacity of . The dam supplies water through a tunnel to a 133.47 MW power station near Xinshe with two 66.735 MW turbines, generating 410.2 million

kilowatt hour A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a unit of energy: one kilowatt of power for one hour. In terms of SI derived units with special names, it equals 3.6 megajoules (MJ). Kilowatt-hours are a common bil ...

s per year.

References

1998 establishments in Taiwan Dams in Taichung Gravity dams Hydroelectric power stations in Taiwan Dams completed in 1998 {{Taiwan-dam-stub

See also

References