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http://dx.doi.org/10.3741/JKWRA.2009.42.1.1

Evaluation of Eco-Hydrological Changes in the Geum River Considering Dam Operations: I. Flow Regime Change Analysis  

Ko, Ick-Hwan (K-water Institute, Korea Water Resources Corporation (K-water))
Kim, Jeong-Kon (K-water Institute, Korea Water Resources Corporation)
Park, Sang-Young (K-water Institute, Korea Water Resources Corporation)
Publication Information
Journal of Korea Water Resources Association / v.42, no.1, 2009 , pp. 1-8 More about this Journal
Abstract
In this study, based on the major activities which might have affected the ecological system of the Geum River, a conceptual model was proposed to guide scenario development for the eco-hydrological river evaluation. Also, an analysis method employing a set of models consisting, with other supporting programs, of KModSim for watershed network analysis and RAP for ecosystem analysis was developed for eco-hydrological river assessment. Then, hydrological analyses with various scenarios were conducted to examine the flow regime changes expected from the construction and operation of the Youngdam Multipurpose Dam (YMD) and Daecheong Multipurpose Dam (DMD) in the Geum River basin. The results indicated that the "Percentile 10" values for 10% exceeding time were decreased by 20.5% and 8.0% at Sutong downstream of YMD and Gongju downstream of DMD, respectively, while "Percentile 90" values for 90% exceeding time were increased by 56.3% and 340.8% at Sutong and Gongju, respectively, resulting in the reduction of the high flow variability typical for unregulated rivers in Korea. The results of eco-hydrological analyses will be presented in the following papers.
Keywords
Eco-Hydrological River Assessment; Flow Variability; KModSim; RAP;
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Times Cited By KSCI : 2  (Citation Analysis)
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