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http://dx.doi.org/10.15681/KSWE.2018.34.5.537

Development and Evaluation of Sediment Delivery Ratio Equation using Clustering Methods for Estimation of Sediment Discharge on Ungauged Basins in Korea  

Lee, Seoro (Department of Regional Infrastructure Engineering, Kangwon National University)
Park, Sang Deog (Department of Civil Engineering, Gangneung-Wonju National University)
Shin, Seung Sook (Department of Civil Engineering, Gangneung-Wonju National University)
Kim, Ki-sung (Department of Regional Infrastructure Engineering, Kangwon National University)
Kim, Jonggun (Department of Regional Infrastructure Engineering, Kangwon National University)
Lim, Kyoung Jae (Department of Regional Infrastructure Engineering, Kangwon National University)
Publication Information
Journal of Korean Society on Water Environment / v.34, no.5, 2018 , pp. 537-547 More about this Journal
Abstract
Sediment discharge by rainfall runoff affects water quality in rivers such as turbid water, eutrophication. In order to solve various problems caused by soil loss, it is important to establish a sediment management plan for watersheds and rivers in advance. However, there is a lack of sediment data available for estimating sediment discharge in ungauged basins.. Thus, reasonable research is very important to evaluate and predict the sediment discharge quantitatively. In this study, cluster analysis was conducted to classify gauged watersheds into hydrologically homogeneous groups based on the watershed characteristics. Also, this study suggests a method to efficiently predict the sediment discharge for ungauged basins by developing and evaluating the SDR equations based on the PA-SDR module. As the result, the SDR equations for the classified watersheds were derived to predict the most reasonable sediment discharge of ungauged basins with 0.24 % ~ 10.89 % errors. It was found that the optimal parameters for the gauged basins reflect well characteristic of sediment movement. SDR equations proposed in this study will be available for estimating sediment discharge on ungauged basins. Also it is possible to utilize establishing the appropriate sediment management plan for integrated management of watershed and river in Korea.
Keywords
Cluster analysis sediment management; Sediment delivery ratio; Sediment discharge; Ungauged basin;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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