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Quantification of annual sediment deposits for sustainable sand management in Aghanashini river estuary

Ramachandra, TV and Vinay, S and Chandran, MDS (2018) Quantification of annual sediment deposits for sustainable sand management in Aghanashini river estuary. In: JOURNAL OF ENVIRONMENTAL MANAGEMENT, 206 . pp. 1263-1273.

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Official URL: http://dx.doi.org/10.1016/j.jenvman.2017.07.060

Abstract

Sedimentation involving the process of silt transport also carries nutrients from upstream to downstream of a river/stream. Sand being one of the important fraction of these sediments is extracted in order to cater infrastructural/housing needs in the region. This communication is based on field research in the Aghanshini river basin, west coast of India. Silt yield in the river basin and the sedimentation rate assessed using empirical techniques supplemented with field quantifications using soundings (SONAR), show the sediment yield of 1105-1367 kilo cum per year and deposition of sediment of 61 (2016) to 71 (2015) cm. Quantifications of extractions at five locations, reveal of over exploitation of sand to an extent of 30% with damages to the breeding ground of fishes, reduced productivity of bivalves, etc., which has affected dependent people's livelihood. This study provides vital insights towards sustainable sand harvesting through stringent management practices. (C) 2017 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belong to the ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
Department/Centre: Division of Biological Sciences > Centre for Ecological Sciences
Division of Interdisciplinary Research > Center for Infrastructure, Sustainable Transportation and Urban Planning (CiSTUP)
Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Depositing User: Id for Latest eprints
Date Deposited: 02 Mar 2018 15:03
Last Modified: 28 Feb 2019 08:42
URI: http://eprints.iisc.ac.in/id/eprint/58956

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