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http://dx.doi.org/10.3741/JKWRA.2017.50.12.815

Assessment of the vulnerability of groundwater level management in Nakdong river basin  

Yang, Jeong-Seok (School of Civil and Environmental Engineering, Kookmin University)
Lee, Jae-Beom (School of Civil and Environmental Engineering, Kookmin University)
Kim, Il-Hwan (School of Civil and Environmental Engineering, Kookmin University)
Publication Information
Journal of Korea Water Resources Association / v.50, no.12, 2017 , pp. 815-825 More about this Journal
Abstract
Groundwater management vulnerability was assessed using TOPSIS (Techniques for Order Performance by Similarity to Ideal Solution) for 21 administrative districts in Nakdong river basin. Ten indicators were selected for 21 administrative districts in the Nakdong river basin by collecting natural, human, and social data sets. The selected indicators were standardized using rescale method, and each indicator was weighted by considering the questionnaire of expert group. The results of the weights determination survey showed that the annual average groundwater level index was 0.157 and this is the highest value. The annual average precipitation index was 0.154 and the annual groundwater recharge index was 0.152. The lowest weighted index was 0.043 for population density. Finally, the result of assessment of groundwater management vulnerability showed that Sangju-si was the most vulnerable to groundwater management among 21 administrative districts in Nakdong river basin because the annual average precipitation, annual average groundwater recharge, and annual average groundwater use indicators were highly vulnerable. The second and the third vulnerable regions were Yecheon-gun and Haman-gun respectively. The assessment of groundwater management vulnerability for the five major river basins in Korea can be a essential basis for the establishment of groundwater management policy.
Keywords
Groundwater level; TOPSIS; Vulnerability assessment; Nakdong river basin;
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Times Cited By KSCI : 5  (Citation Analysis)
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