Reservoir Planning


  • Dams and weirs are some of the barriers which when construct across the rivers and streams, cause accumulation of water behind them.
  • The water thus accumulat in form of an artificial lake is know reservoir.
  • In broad sense, any collected water in form of a pool or lake, may be termed as reservoir.
  • Dams and reservoirs are the most important elements of any multipurpose river basin development.
  • River water may be used for generation of hydroelectric power, irrigation, and water supply source for some town or city.
  • All these uses require a constant or almost constant supply of water.
  • But we know that discharge in rivers and streams remains fluctuating.
  • During rains, the water in the river may be more than the requirements and during dry period the discharge in the river may become less than the minimum requirements.
  • Thus to store the excess water, flowing during floods, dams are constructed across the rivers.
  • This stored water is use to augment the supplies of the river during dry weather.
  • By this arrangement it is possible to generate hydroelectric power, provide irrigation facilities and make available drinking water for whole of the year.
  • Actually dams and reservoirs are complementary to each other.
  • Reservoir can be develop only by constructing dam, conversely when dam is construct reservoir is bound to develop.
  • Both dams and reservoirs, being very important elements of any multipurpose irrigation project, have to be very carefully planned, designed and operated.
  • This involves proper selection of site, for dam.

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