| Techi Dam | |
|---|---|
|
|
|
| Country | Taiwan |
| Location | Taichung County |
| Coordinates | |
| Status | In use |
| Construction began | 8 December 1969 |
| Opening date | September 1974 |
| Owner(s) | Taiwan Power Company |
| Dam and spillways | |
| Type of dam | Variable radius concrete thin arch |
| Height | 180 metres (590 ft) |
| Length | 290 metres (950 ft) |
| Crest width | 4.5 metres (15 ft) |
| Base width | 20 metres (66 ft) |
| Impounds | Dajia River |
| Spillways | 5 |
| Type of spillway | Gated over-the crest plus ungated bell-mouth, concrete tunnel |
| Spillway capacity | 6,400 cubic metres per second (230,000 cu ft/s) |
| Reservoir | |
| Creates | Techi Reservoir |
| Capacity | 176,331,000 cubic metres (142,954 acre·ft) |
| Catchment area | 592 square kilometres (229 sq mi) |
| Surface area | 454 hectares (1,120 acres) |
| Power station | |
| Commission date | 1974 |
| Turbines | 3 x 78 MW |
| Installed capacity | 234 MW |
The Techi Dam (also spelled "Deji") is a concrete thin arch dam on the Dajia River in the mountains of central Taiwan, some 15 kilometres (9.3 mi) south of Heping in Taichung County. At 180 metres (590 ft) high, it is one of the tallest dams in the country. It serves primarily for flood control and hydroelectric generation.[1][2] Its power station contains three 78 MW generators for a total installed capacity of 234 MW.[3]
Construction of the dam was started in 1969 by the Taiwan Power Company and was completed five years later in 1974. Originally named Tachien Dam after the gorge it lies within, the dam was renamed Techi (德基), meaning "foundation of virtue", by then-President Chiang Kai-Shek.[4] The dam forms the Techi Reservoir, which reaches 14 kilometres (8.7 mi) upstream and covers 454 hectares (1,120 acres) with a storage capacity of more than 175,000,000 cubic metres (142,000 acre·ft).[5]