Sedimentation assessment in a multipurpose reservoir in Central Kerala, India View Full Text


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Article Info

DATE

2014-12

AUTHORS

Girish Gopinath, M. K. Ashitha, K. V. Jayakumar

ABSTRACT

Dams and their reservoirs, constructed to manage the water scarcity problems of a region, sometimes lose whole or part of their functionality due to sedimentation. This issue, seen as a negative impact as far as reservoir life and its purpose is concerned, can be a boon to the construction industry, by providing a highly demanding construction material in the form of sand dredged from the reservoirs. Malampuzha reservoir, a multipurpose reservoir in the South Indian state of Kerala, is also losing considerable part of its storage due to siltation. This paper assesses the rate of sedimentation in Malampuzha reservoir, through bathymetric survey and suggests measures for utilization of the removable sediment. Our analysis has shown that the reservoir capacity is reduced from 226 to 205.19 Mm3; a reduction in capacity of 20.81 Mm3 in 55 years. The rate of sedimentation of the reservoir is estimated as 16.95 mm/year. The dead storage capacity of the reservoir has reduced to 47.5 % from the original at present. The composition of deposited sediments is also identified, based on which its productive use is recommended. More... »

PAGES

4441-4449

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Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s12665-014-3344-0

DOI

http://dx.doi.org/10.1007/s12665-014-3344-0

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https://app.dimensions.ai/details/publication/pub.1014223444


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