Nanhua Dam (Chinese: 南化水庫; pinyin: Nánhuà Shuǐkù; Pe̍h-ōe-jī: Lâm-hoà Chúi-khò͘), originally named Houjie Dam (後堀水庫), is a dam across the Houku River, a tributary of the Zengwen River in southern Taiwan. Located at Nanhua District, Tainan, the dam was built to provide municipal water to Tainan and Kaohsiung City and is operated by the Taiwan Water Corporation.[2] Construction work started in December 1988, and impoundment of the reservoir began in July 1993. A conduit to supply water from the reservoir to Kaohsiung was completed in October 1993 and the entire project was operational in March 1994.[3]
The curved earthfill dam is 87.5 metres (287 ft) high and 511 metres (1,677 ft) long, impounding a reservoir with a capacity of 158 million cubic metres (128,000 acre⋅ft) and an active or useful capacity of 149.5 million cubic metres (121,200 acre⋅ft).[1] The reservoir naturally receives water from a catchment of 104 square kilometres (40 sq mi), which is not enough to fill it alone. Most of the water is actually diverted through a tunnel from the Qishan River to the east, adding 408 square kilometres (158 sq mi) to the drainage area.[1] The tunnel provides an average of 160.6 million m3 (130,200 acre feet) of water to the reservoir each year.[3]
Because of its location in a mountainous region, Nanhua is prone to heavy sediment accumulation. A small upstream diversion weir was built to send water laden with silt through a bypass tunnel and allow the remaining clear water to enter the reservoir.[4] However, large amounts of silt are still carried into the reservoir during flooding events. In 2009 alone, flooding caused by Typhoon Morakot dumped 17 million m3 (14,000 acre feet) of silt into the reservoir.[5] In February 2010, the Taiwan Water Corporation began the first stage of a two-year sediment removal project at Nanhua.[6]
nanhua, chinese, 南化水庫, pinyin, nánhuà, shuǐkù, lâm, hoà, chúi, khò, originally, named, houjie, 後堀水庫, across, houku, river, tributary, zengwen, river, southern, taiwan, located, nanhua, district, tainan, built, provide, municipal, water, tainan, kaohsiung, city. Nanhua Dam Chinese 南化水庫 pinyin Nanhua Shuǐku Pe h ōe ji Lam hoa Chui kho originally named Houjie Dam 後堀水庫 is a dam across the Houku River a tributary of the Zengwen River in southern Taiwan Located at Nanhua District Tainan the dam was built to provide municipal water to Tainan and Kaohsiung City and is operated by the Taiwan Water Corporation 2 Construction work started in December 1988 and impoundment of the reservoir began in July 1993 A conduit to supply water from the reservoir to Kaohsiung was completed in October 1993 and the entire project was operational in March 1994 3 Nanhua DamOfficial name南化水庫LocationNanhua Tainan TaiwanCoordinates23 05 22 N 120 32 16 E 23 08944 N 120 53778 E 23 08944 120 53778Construction began1988 36 years ago 1988 Opening date1994 30 years ago 1994 Dam and spillwaysType of damEarthfillImpoundsHouku RiverHeight87 5 m 287 ft 1 Length511 m 1 677 ft 1 Spillway typeUngated overflow bathtubSpillway capacity4 332 m3 s 153 000 cu ft s 1 ReservoirTotal capacity158 10 6 m3 128 000 acre ft 1 Catchment area512 km2 198 sq mi 1 Surface area5 37 km2 1 330 acres 1 Power StationOperator s Taiwan Water Corporation The curved earthfill dam is 87 5 metres 287 ft high and 511 metres 1 677 ft long impounding a reservoir with a capacity of 158 million cubic metres 128 000 acre ft and an active or useful capacity of 149 5 million cubic metres 121 200 acre ft 1 The reservoir naturally receives water from a catchment of 104 square kilometres 40 sq mi which is not enough to fill it alone Most of the water is actually diverted through a tunnel from the Qishan River to the east adding 408 square kilometres 158 sq mi to the drainage area 1 The tunnel provides an average of 160 6 million m3 130 200 acre feet of water to the reservoir each year 3 Because of its location in a mountainous region Nanhua is prone to heavy sediment accumulation A small upstream diversion weir was built to send water laden with silt through a bypass tunnel and allow the remaining clear water to enter the reservoir 4 However large amounts of silt are still carried into the reservoir during flooding events In 2009 alone flooding caused by Typhoon Morakot dumped 17 million m3 14 000 acre feet of silt into the reservoir 5 In February 2010 the Taiwan Water Corporation began the first stage of a two year sediment removal project at Nanhua 6 See also editList of dams and reservoirs in Taiwan Zengwun DamReferences edit a b c d e f g h Reservoirs and Weirs in Taiwan in Chinese Taiwan Water Resources Agency Ministry of Public Affairs p 335 Fagan Michael 2012 05 05 Nanhua Reservoir 南化水庫 煞車轉舵再加速 Retrieved 2012 07 13 a b Nanhua Reservoir Museum of Major Engineering Project Models Retrieved 2012 07 13 Owens Phil Collins Alison March 2003 Planning and Decision Making Opportunities for River Basin Planning of Sediment Management PDF SedNet Retrieved 2012 07 13 Impending Flood Season County Magistrate Su Urges for Acceleration in the Dredging of Dams Tainan Public Works Bureau 2010 04 13 Archived from the original on 2015 03 22 Retrieved 2012 07 13 Date set for Nan Hua Reservoir desilting plan The China Post 2009 12 29 Retrieved 2012 07 13 nbsp Wikimedia Commons has media related to Nanhua Dam nbsp This article about a dam or floodgate in Taiwan is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Nanhua Dam amp oldid 1177438999, wikipedia, wiki, book, books, library,
