A reservoir (etymology: from French réservoir a "storehouse" ), artificial lake or impoundment from a dam is used to store water. Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.
The term reservoir may also be used to describe naturally-occurring underground reservoirs such as those beneath an oil or wa...
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A reservoir (etymology: from French réservoir a "storehouse" ), artificial lake or impoundment from a dam is used to store water. Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.
The term reservoir may also be used to describe naturally-occurring underground reservoirs such as those beneath an oil or water well.
A dam constructed in a valley relies on the natural topography to provide most of the basin of the reservoir. Dams are typically located at a narrow part of a valley downstream of a natural basin. The valley sides act as natural walls with the dam located at the narrowest practical point to provide strength and the lowest practical cost of construction. In many reservoir construction projects people have to be moved and re-housed, historical artifacts moved or rare environments relocated. Examples include the temples of Abu Simbel (...
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