Water and Energy International
Year : 2019, Volume : 61r, Issue : 11
First page : ( 52) Last page : ( 56)
Print ISSN : 0974-4207. Online ISSN : 0974-4711.

Sedimentation and Flushing Operation of Pandoh Reservoir

Dr. Narwal Gulab Singh, Gupta J.P.

Bhakra Beas Management Board

Online published on 24 April, 2019.

Abstract

Reservoir sedimentation is a global challenge. It is one of the most crucial issue for the reservoir sustainability in the world. Reservoir sedimentation is filling of the reservoir behind a dam with sediment carried into a reservoir by streams. The flow of water from the catchment upstream of a reservoir is capable of eroding the catchment area and of depositing material either upstream of the reservoir or in the still water of the reservoir. The deltaic deposition consists of four part front reach, front set, top set and tail reach due to reservoir operation same of these particular can migrate toward the dam and more sediment are brought into the reservoir by the flows, the deltaic deposition pattern may be changed to the wedged type of deposit. For wide reservoir with lateral width much greater than the width of total lateral width of flow outlets the lateral distribution of sediment deposit may not be uniform. All rivers contain sediments, a river, can be considered a body of flowing sediments as much as one of flowing water. When a river is stilled behind a dam, the sediments it contains sink to the bottom of the reservoir. The proportion of the river's total sediment load captured by a dam is known as its “trap efficiency”. As the sediments accumulate in the reservoir, so the dam gradually loses its ability to store water for the purpose, for which it was built. Sedimentation is still probably the most serious technical problem faced by the dam industry in many countries.

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Keywords

Reservoir, sediments, flushing, live capacity and silt free water.

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