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http://dx.doi.org/10.17663/JWR.2019.21.1.009

Analysis of flow rate-SS discharges characteristics and causes during rainfall season in Daegi-cheon Watershed  

Kim, Jonggun (Department of Regional Infrastructure Eng., Kangwon National University)
Lee, Suin (Watershed and Total Load Management Research Division, National Institute of Environmental Research)
Park, Byeongki (Department of Regional Infrastructure Eng., Kangwon National University)
Won, Chulhee (Dongsung Engineering Co., Ltd)
Kum, Donghyuk (Department of Regional Infrastructure Eng., Kangwon National University)
Choi, Joongdae (Department of Regional Infrastructure Eng., Kangwon National University)
Publication Information
Journal of Wetlands Research / v.21, no.1, 2019 , pp. 9-15 More about this Journal
Abstract
The Daegi-cheon watershed is located in the upper part of the Han River, which has the representative highland vegetable growing complexes. This watershed has a large impact on the water quality and aquatic ecosystem in the upstream of the Han River by discharging a large amount of turbid water during rainfall season. For proposing an efficient turbid water management and policy, the analysis of the characteristics of flow rate and SS and its causes needs to be carried out preferentially. In this study, the relationship between flow rate and SS concentration was analyzed in the Daegi-cheon watershed, and in turn the turbidity characteristics were analyzed. As a result of the study, in the normal flood flow condition, it was shown that SS concentration changed arbitrarily due to various environmental factors. On the other hand, the SS concentration was considerably high in the very high flow condition. Based on the field survey, this could be the reason why the effects of the steep valley and slope collapse according to the very high flow rate as well as the source in the agricultural fields were greatly contributed. Therefore, it is necessary to develop a structural best management practice that can stabilize the steep slope and reduce river bed loss along with the typical source managements plans.
Keywords
Daegi-cheon; SS concentration; Flood flow rate; Structural Best management practice; Source control management;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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