Bui Dam
Hydroelectric project in Ghana / From Wikipedia, the free encyclopedia
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The Bui Dam is a 400-megawatt (540,000 hp) hydroelectric project in Ghana. It is built on the Black Volta river at the Bui Gorge, at the southern end of Bui National Park. The project was a collaboration between the government of Ghana and Sino Hydro, a Chinese construction company. Construction on the main dam began in December 2009. Its first generator was commissioned on 3 May 2013,[4] and the dam was inaugurated in December of the same year.[5]
Bui Dam | |
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Country | Ghana |
Location | On the border of the Savannah Region and the Bono Region[1] |
Coordinates | 8°16′42″N 2°14′9″W |
Status | Operational |
Construction began | Preparatory: January 2008 Main dam: December 2009 |
Opening date | 2013 |
Construction cost | US$622 million |
Owner(s) | Bui Power Authority |
Dam and spillways | |
Type of dam | Gravity, roller-compacted concrete |
Impounds | Black Volta River |
Height (foundation) | 108 m (354 ft) [2] |
Height (thalweg) | 90 m (300 ft) |
Length | 492.5 m (1,616 ft) [2] |
Elevation at crest | 185 m (607 ft) [2] |
Width (crest) | 7 m (23 ft) [2] |
Dam volume | 1,000,000 m3 (35,000,000 cu ft) |
Spillway type | Emergency, five gate-controlled |
Spillway capacity | 10,450 m3/s (369,000 cu ft/s)[2] |
Reservoir | |
Creates | Bui Reservoir |
Total capacity | 12,570,000,000 m3 (10,190,000 acre⋅ft) [2] |
Active capacity | 7,720,000,000 m3 (6,260,000 acre⋅ft) [2] |
Surface area | Minimum level: 288 km2 (111 sq mi) Maximum level: 444 km2 (171 sq mi) [3] |
Maximum length | 40 km (25 mi) avg. |
Maximum water depth | 88 m (289 ft)[3] |
Normal elevation | Minimum level: 167 m (548 ft) Maximum level: 183 m (600 ft) [2] |
Power Station | |
Commission date | 2013 |
Turbines | 3 x 133 MW (178,000 hp) Francis turbines |
Installed capacity | 400 MW (540,000 hp) |
Website www |
Bui is the second largest hydroelectric generating plant in the country after the Akosombo Dam. The reservoir flooded about 20% of the Bui National Park and impacted the habitats for the rare black hippopotamus as well as a large number of wildlife species. It required the resettlement of 1,216 people,[6] and affected many more.