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Itezhi-Tezhi Dam
The Itezhi-Tezhi Dam on the Kafue River in west-central Zambia was built between 1974 and 1977 at the Itezhi-Tezhi Gap, in a range of hills through which the river had eroded a narrow valley, leading to the broad expanse of the wetlands known as the Kafue Flats. The town of Itezhi-Tezhi rests to the north side of the dam.
== Dimensions and purpose ==
The dam has a height of , a crest length of and forms a reservoir of , which flooded a section of the Kafue National Park.
The initial purpose of the dam is to store water for the Kafue Gorge Upper Power Station more than downstream. The Kafue River, like most in south-central Africa, has a very high seasonal variation, flooding in the rainy season and slowing to perhaps a twentieth of the peak flow rate at the end of the dry season. Power generation however requires a steady flow, which can only be achieved by having a reservoir large enough to store the rainy season flood for use in the dry season. At the Kafue Gorge the topography does not allow a large enough reservoir to form. The designers of the dam therefore had the idea of siting the main reservoir at Itezhi-Tezhi, and releasing the water in a steady flow down the river along the Kafue Flats to the Kafue Gorge Dam.〔(Zesco: "History of Itezhi-Tezhi" ) website accessed 1 March 2007.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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