Multiobjective Analysis of the Sedimentation behind Sangju Weir, South Korea
Publication: Journal of Water Resources Planning and Management
Volume 144, Issue 2
Abstract
This paper presents a new multiobjective approach to solve sedimentation problems behind weirs and low-head dams. The multicriteria decision analysis (MCDA) framework is used to improve reservoir operation rules for Sangju Weir in South Korea. A series of stage and discharge constraints can be developed to include consideration for reservoir sedimentation, hydropower generation, flood control, water supply, irrigation and drainage, and environment. Seasonally changing operation rules can help mitigate reservoir sedimentation while improving hydropower production, water supply, water quality, and environmental issues. Based on a 22-year daily reservoir operation simulation, improved operation rules to mitigate reservoir sedimentation include: (1) a nonflood season stage kept high (EL 47.0 m); (2) a flood season stage between EL 47.0 m and EL 44.5 m depending on the magnitude of the upstream flow discharge; and (3) gates should be opened during floods ().
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Acknowledgments
This paper was prepared during the first author’s Ph.D. studies at Colorado State University. The financial support from the Korea Water Resources Corporation (K-water) during the study is gratefully acknowledged. However, the research results do not necessarily reflect policies or endorsement of K-water.
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Information & Authors
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Published In
Journal of Water Resources Planning and Management
Volume 144 • Issue 2 • February 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jun 20, 2016
Accepted: Jun 13, 2017
Published online: Nov 22, 2017
Published in print: Feb 1, 2018
Discussion open until: Apr 22, 2018
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