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http://dx.doi.org/10.3741/JKWRA.2022.55.9.687

Development and application of integrated indicators for assessing the water resources performance of multi-purpose and water supply dams  

Sung, Jiyoung (Department of Civil & Environmental Engineering, Dankook University)
Kang, Boosik (Department of Civil & Environmental Engineering, Dankook University)
Kim, Bomi (Department of Civil & Engineering, Kumoh National Institute of Technology)
Noh, Seongjin (Department of Civil & Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Korea Water Resources Association / v.55, no.9, 2022 , pp. 687-700 More about this Journal
Abstract
For comprehensively assessment the water resources performance of multi-purpose dams and water supply dams in South Korea, a methodology was proposed to utilize the durational reliability along with the integrated auxiliary indicators including resiliency, dimensionless vulnerability, water resource efficiency, specific inflow, and specific water supply. In addition, for the purpose of sustainable dam operation in the future, a plan to grade the water resources performance was presented to periodically evaluate the performance and determine the priority of each dam's structural or non-structural planning according to the evaluation results. As major results, in the case of Sumjingang Dam, the durational reliability was 99.0%, but the integrated auxiliary index was the lowest of 44 points, which was 5th grade. This means that despite the current high reliability, hydrological changes due to future climate change or regional change of water demand-supply balance can have significant impacts on the water resources performances. In contrast, the Chungju Dam with a durational reliability of 93.0%, which is below the average among all multi-purpose dams, shows the 76 points of the integrated auxiliary index, which is 3rd highest following the Soyanggang Dam and the Namgang Dam. Nevertheless, due to the size of the basin, the specific inflow is sufficiently high as 185%, so the actual performance could be evaluated relatively high. The water supply dams designed for a single purpose tend to be evaluated relatively high because they have a high proportion of industrial and municipal water supply and have enough room for the supply capacity.
Keywords
Stability of dam reservoir yield; Reliability; Resilience; Vulnerability; Integrated indicator;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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