Shigang Dam

24°16′58.3″N 120°46′08.3″E

Shigang Dam
Official name	石岡壩
Location	Shigang District / Dongshi District of Taichung, Taiwan
Purpose	flood control, water storage, regulation, recreation
Status	In use
Construction began	1974; 50 years ago (1974)
Opening date	1977; 47 years ago (1977)
Operator(s)	Ministry of Economic Affairs
Dam and spillways
Type of dam	Gravity Dam
Impounds	Dajia River
Height	25 m (82 ft)
Length	352 m (1,155 ft)
Dam volume	141,300 m3 (4,990,000 cu ft)
Spillway type	15 controlled drum-gate
Spillway capacity	13,000 m3/s (460,000 cu ft/s)
Reservoir
Total capacity	3,380,000 m3 (119,000,000 cu ft)
Active capacity	1,430,000 m3 (50,000,000 cu ft)
Catchment area	1,061 km2 (410 sq mi)
Surface area	0.645 km2 (0.249 sq mi)
Normal elevation	267 ft (81 m)
Website Central Region Water Resources Office, Water Resources Agency, Ministry of Economic Affairs – SHIGANG DAM

Shigang Dam (traditional Chinese: 石岡壩; simplified Chinese: 石冈坝; pinyin: Shígāng Bà) is a concrete gravity barrage dam across the Dajia River in Shigang District and Dongshi District of Taichung, Taiwan, located near Fengyuan District.^[1] The dam was built from 1974 to 1977 for flood control and irrigation purposes, and stands 35.2 m (115 ft) high and 357 m (1,171 ft) long, holding a reservoir with an original capacity of 3,380,000 m³ (2,740 acre⋅ft).^[2]

The dam was heavily damaged in the 921 earthquake of 1999, which caused the collapse of its northern end. Subsequently, an embankment cofferdam was built to prevent water from flowing through the breach, while the collapsed section has been retained as a memorial. Since this reduces the storage capacity of the dam, it is no longer used for flood control, but remains an important source of agricultural water.

In 1999 destroyed part of the dam

See also

• List of dams and reservoirs in Taiwan

References

1. Keh-Chia, Y. (2018). Scour and Erosion IX: Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018), November 5-8, 2018, Taipei, Taiwan. CRC Press. p. 354. ISBN 978-0-429-66507-3. Retrieved 17 April 2019.
2. Reservoirs and Weirs in Taiwan (in Chinese). Taiwan Water Resources Agency, Ministry of Public Affairs. p. 328.