Kamburu Dam | |
---|---|
Country | Kenya |
Location | Embu County/Machakos County, Eastern Province |
Coordinates | 0°49′45″S37°40′04″E / 0.8291°S 37.6679°E Coordinates: 0°49′45″S37°40′04″E / 0.8291°S 37.6679°E |
Purpose | Power |
Status | Operational |
Construction began | 1971 |
Opening date | 1974 |
Construction cost | US$47 million |
Owner(s) | Kenya Electricity Generating Company |
Dam and spillways | |
Type of dam | Embankment |
Impounds | Tana River |
Height | 52 m (171 ft) |
Length | 730 m (2,400 ft) |
Reservoir | |
Total capacity | 123,000,000 m3 (100,000 acre⋅ft) |
Kamburu Power Station | |
Operator(s) | Kenya Electricity Generating Company |
Commission date | 1974 |
Hydraulic head | 82 m (269 ft) |
Turbines | 3 x 31 MW Francis-type |
Installed capacity | 93 MW (125,000 hp) |
The Kamburu Hydroelectric Power Station, also Kamburu Dam is a rock-filled embankment dam on the Tana River in Kenya. It straddles the border of Embu and Machakos Counties in Eastern Province. The primary purpose of the dam is hydroelectric power generation and it supports a 93 MW power station. Construction on the dam began in 1971 and it was completed in 1975. The power station was commissioned the same year. US$23 million of the US$47 million project cost was provided by the World Bank. The power station is operated by Kenya Electricity Generating Company and is part of the Seven Forks Scheme. [1] [2]
The 52 m (171 ft) tall dam creates a reservoir with a storage capacity of 123,000,000 m3 (100,000 acre⋅ft). The power station is located underground just below the left toe and contains three 31 MW Francis turbine-generators. The difference in elevation between the reservoir and power station affords a net hydraulic head of 82 m (269 ft). Water discharged from the power station travels down a 3,040 m (9,970 ft) long tailrace tunnel before reaching the Tana at Gitaru Reservoir. [3]
The ca. 1000 km long Tana River is the longest river in Kenya, and gives its name to the Tana River County. Its catchment covers ca. 100,000 km² and can be divided into the headwaters and the lower Tana consisting of the section downstream of Kora where the river flows for ca. 700 km through semi-arid plains. Its tributaries include the Thika, as well as several smaller rivers that flow only during the rainy season. The river rises in the Aberdare Mountains to the west of Nyeri. Initially it runs east before turning south around the massif of Mount Kenya. A series of hydroelectric dams has been constructed along the river. These include the Masinga Dam, the Kamburu Dam, the Gitaru Dam, the Kindaruma Dam and the Kiambere Dam .en The Masinga Reservoir and the Kiambere Reservoir, created by the Masinga and Kiambere dams respectively, serve a dual purpose: hydro-electric power (HEP) generation and agricultural irrigation. The other three are used exclusively for HEP generation. A 2003 study reported that two-thirds of Kenya's electrical needs were supplied by the series of dams along the Tana River. Many people believe this river has groundwater underneath it, but it doesn't. The electricity is then supplied to the national grid system and distributed countrywide through a series of substations, transformers and cables.
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