Development and Application of a Distributed Hydrological Model: EasyDHM
Publication: Journal of Hydrologic Engineering
Volume 19, Issue 1
Abstract
Distributed hydrological models have been commonly used in research involving water management because of their consideration of spatial variability. However, practical applications still encounter technical challenges such as complicated modeling, low computational efficiency, and parameter equifinality. A user-friendly model, EasyDHM, was developed and was shown effective over the years. In this paper, the essential parts of this model, namely, discretization of the spatial units, preparation and initiation of data and parameters, and the main physical processes are briefly introduced. In particular, the roles of the parameter sensitivity analysis and optimization for this model, which have considerably improved the prediction accuracy, are highlighted in this study. From the application to the upstream basin of Han River in China, the simulation and parameter estimation by EasyDHM turned out to be effective and easy to operate. EasyDHM can, therefore, be widely used for practical water management applications.
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Acknowledgments
This paper was jointly supported by funds from Hydrological Simulation & Regulation of Watersheds (Number 51021066) of the Funds for Creative Research Groups of China; Ministry of Water Resources’ Special Funds for Scientific Research on Public Causes (201001024, 201101026, and 201101024); and the Open Research Fund of State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research (Grant Number IWHR-SKL-201103).
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Information
Published In
Journal of Hydrologic Engineering
Volume 19 • Issue 1 • January 2014
Pages: 44 - 59
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Dec 6, 2011
Accepted: Nov 9, 2012
Published online: Nov 12, 2012
Discussion open until: Apr 12, 2013
Published in print: Jan 1, 2014
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