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http://dx.doi.org/10.3741/JKWRA.2019.52.2.97

Regional estimation of baseflow index in Korea and analysis of baseflow effects according to urbanization  

Kang, Hyeongsik (Department of Water and Land, Korea Environment Institute)
Hyun, Yun-Jung (Department of Water and Land, Korea Environment Institute)
Jun, Sang-Mook (Environment Impact Assessment Group, Korea Environment Institute)
Publication Information
Journal of Korea Water Resources Association / v.52, no.2, 2019 , pp. 97-105 More about this Journal
Abstract
In this study, the baseflow indices in Nakdong river watershed and the whole country's river were calculated by using SWAT model and PART method. The annual averaged baseflow in the Nakdong river watershed was estimated at 40% - 44% of the total discharge rate, and it is found to be higher than 90% during the winter months of December and January. An analysis of the baseflow index from 317 gauge stations across the country revealed that the contribution of baseflow to the nation's stream flow rate stood at an annual average of 40%, ranging from less than 20% to over 80% by region. Also, the impact of the decreasing baseflow due to land use changes in 1975 and 2000 was analyzed in Keumhogang river watershed under the same weather conditions. The results revealed that the number of days under the standard instream flow increased by 19-24 days as a result of the increase in the urbanization rate.
Keywords
Baseflow index; PART method; Flow rate; Nakdong river; Urbanization rate;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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