Development of Optimal and Physically Realizable Unit Hydrograph
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VIEW THE REPLYPublication: Journal of Hydrologic Engineering
Volume 11, Issue 6
Abstract
Optimization techniques for deriving a unit hydrograph (UH) have received considerable attention. But the UHs derived in some studies are not physically justifiable as the recession limb has a wavy shape. This study extends an existing optimization model by introducing additional constraints to ensure a monotonic decline in the recession limb of the UH. Although there is a marginal deterioration of the objective function, the shape of the developed UH is physically correct. Moreover, the match between the observed and computed direct surface runoff hydrographs is close.
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Acknowledgments
The writers would like to thank Professor Hoshin Vijay Gupta from University of Arizona, Tucson, Ariz., for providing the software of the SCE algorithm used in this study.
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Information
Published In
Journal of Hydrologic Engineering
Volume 11 • Issue 6 • November 2006
Pages: 612 - 616
Copyright
© 2006 ASCE.
History
Received: Jul 19, 2004
Accepted: Aug 18, 2005
Published online: Nov 1, 2006
Published in print: Nov 2006
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