Extended Muskingum method for flood routing

Kumar, Nagesh D and Baliarsingh, Falguni and Raju, Srinivasa K (2011) Extended Muskingum method for flood routing. In: Journal of Hydro-environment Research, 5 (2). pp. 127-135.

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Abstract

Routing of floods is essential to control the flood flow at the flood control station such that it is within the specified safe limit. In this paper, the applicability of the extended Muskingum method is examined for routing of floods for a case study of Hirakud reservoir, Mahanadi river basin, India. The inflows to the flood control station are of two types-one controllable which comprises of reservoir releases for power and spill and the other is uncontrollable which comprises of inflow from lower tributaries and intermediate catchment between the reservoir and the flood control station. Muskingum model is improved to incorporate multiple sources of inflows and single outflow to route the flood in the reach. Instead of time lag and prismoidal flow parameters, suitable coefficients for various types of inflows were derived using Linear Programming. Presently, the decisions about operation of gates of Hirakud dam are being taken once in 12 h during floods. However, four time intervals of 24, 18, 12 and 6 h are examined to test the sensitivity of the routing time interval on the computed flood flow at the flood control station. It is observed that mean relative error decreases with decrease in routing interval both for calibration and testing phase. It is concluded that the extended Muskingum method can be explored for similar reservoir configurations such as Hirakud reservoir with suitable modifications. (C) 2010 International Association of Hydro-environment Engineering and Research. Asia Pacific Division. Published by Elsevier By. All rights reserved.

Item Type:	Journal Article
Publication:	Journal of Hydro-environment Research
Publisher:	Elsevier Science B.V.
Additional Information:	Copyright of this article belongs to Elsevier Science B.V.
Keywords:	Extended Muskingum;Linear programming;Mahanadi river basin
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	29 Jun 2011 09:47
Last Modified:	29 Jun 2011 09:47
URI:	http://eprints.iisc.ac.in/id/eprint/38631

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