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http://dx.doi.org/10.3741/JKWRA.2015.48.4.309

Quantifying Contribution of Direct Runoff and Baseflow to Rivers in Han River System, South Korea  

Hong, Jiyeong (Dept. of Regional Infrastructure Engrg., Kangwon National University)
Lim, Kyoung Jae (Dept. of Regional Infrastructure Engrg., Kangwon National University)
Shin, Yongchul (Climate change Research Team, APEC Climate Center)
Jung, Younghun (Institute of Environmental Research, Kangwon National University)
Publication Information
Journal of Korea Water Resources Association / v.48, no.4, 2015 , pp. 309-319 More about this Journal
Abstract
River characteristics in South Korea has been affected by seasonal climatic variability due to climate change and by remarkable land cover change due to rapid economic growth. In this regard, the roles of river management is getting more important to eco-system and human community in watersheds of South Korea. Understanding river characteristics including direct runoff and baseflow, the first step of river management, can give a significant contribution to sustainable river environment. Therefore, the objective of this study is to quantify the contributions of the direct runoff and baseflow to river streamflow. For this, we used the BFLOW and WHAT programs to conduct baseflow separation for 71 streamflow gauge stations in Han River system, South Korea. The results showed that baseflow index for 71 stations ranges from 0.42 to 0.78. Also, gauge stations which have baseflow index more than 0.5 occupied 76% of a total stations. However, baseflow index can be overestimated due to human impacts such as discharge from dams, reservoirs, and lakes. This study will be used as fundamental information to understand river characteristics in river management at the national level.
Keywords
baseflow; direct runoff; BFLOW; WHAT; basefllow index;
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Times Cited By KSCI : 1  (Citation Analysis)
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