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Rihand Dam

Dam in Sonbhadra, Uttar Pradesh

  • 12 min read
  • 5 chapters

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Specifications

Govind Ballabh Pant Sagar is the largest man-made lake in India. Rihand Dam is a concrete gravity dam with a length of 934.45 meters. The maximum height of the dam is 91.46 meters. It was constructed during 1954–62. The dam consists of 61 independent blocks and ground joints. The powerhouse is situated at the toe of the dam, with installed capacity of 300 MW (6 units of 50 MW each). The intake structure is situated between blocks no. 28 and 33. The Dam is in a distressed condition. It is proposed to carry out rehabilitation works in the dam and the powerhouse. The F.R.L. of the dam is 268.22 ft (81.75 m), and it impounds 8.6 million acre-feet (1.06×1010 m3) of water. The construction of the dam resulted in forced relocation of nearly 100,000 people

Many super thermal power stations are located in the catchment area of the dam. These are Singrauli, Vindyachal, Rihand, Anpara, and Sasan super thermal power stations and Renukoot thermal station. The high-alkalinity runoff from the ash dumps (some are located in the reservoir area) of these coal-fired power stations ultimately collects in this reservoir, raising its alkalinity. Using high-alkalinity water for irrigation converts the agriculture fields in to fallow alkali soils.

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