Kihansi Hydroelectric Power Station
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Kihansi Hydroelectric Power Station, is a Script error: No such module "convert". hydroelectric power station located in Kilombero District of southeast Morogoro Region in southern Tanzania. The power station is one of the largest dams in the country. The Tanzanian electricity company, Tanesco operates the power station on behalf of the government of Tanzania.[1]
Location
The power station is located across the Kilombero River at the southern end of the Kihansi Gorge before the convergence with the Ulanga River in Tanzania, approximately Script error: No such module "convert"., by road, southwest of Dar Es Salaam, Tanzania's largest city.[2] This is approximately Script error: No such module "convert"., by road, south of Iringa, the nearest large town.[3] The geographical coordinates of the power station are:08°34'30.0"S, 35°51'05.0"E (Latitude:-8.575000; Longitude:35.851389).[4]
Overview
The Kihansi Dam is a concrete gravity dam owned by the Tanzania Electric Supply Company Limited. Its construction began in July 1995 and was opened by President Benjamin W. Mkapa on 10 July 2000. It cost $275 million to construct. Its installed capacity is 180 megawatts and it provided approximately 13 percent of the total electrical power in Tanzania, at the time it was commissioned.[1][5][6]
Technical details
The concrete dam measures Script error: No such module "convert". in height and Script error: No such module "convert". in length. The resultant reservoir can store a total of Script error: No such module "convert". of water, creating a lake with a surface area of Script error: No such module "convert"., when full.[1]
The river drops approximately Script error: No such module "convert". in the Kihansi Gorge over a distance of about Script error: No such module "convert".. The turbines use that gradient to generate power in an underground power station, and return the water to the river about Script error: No such module "convert". downstream.[1]
Environmental impact
The Kihansi Dam destroyed an 800m-high waterfall, affected over 20,000 villagers, and was directly responsible for the extinction in the wild of the Kihansi Spray Toad. The dam reduced the amount of silt and water coming down from the waterfall into the gorge by 90 percent. This led to the spray toad's microhabitat being compromised, as it reduced the amount of water spray, which the toads were directly reliant on for oxygen. This also meant that the toad may have been more susceptible to a chytrid fungus, which was believed Script error: No such module "Unsubst". to have been transported to the area by conservationists' boots. This chytridiomycosis, which in 2003 was confirmed to be in dead animals of the species, was possibly responsible for the sudden population crash after the world's largest sprinkler system was installed in that area in August 2003. This system was installed to try and conserve the toad species from becoming extinct in the wild, but did not succeed.[7]
See also
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References
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