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Hydrochemical Characteristics and Changes by Rainfall in the Jungrang River  

Kim, Youn-Tae (Department of Earth System Science, Yonsei University)
Kim, Yu Lee (Department of Earth System Science, Yonsei University)
Woo, Nam-Chil (Department of Earth System Science, Yonsei University)
Hyun, Seung Gyu (Department of Earth System Science, Yonsei University)
Publication Information
Journal of Korean Society on Water Environment / v.22, no.4, 2006 , pp. 666-671 More about this Journal
Abstract
Effects of a rainfall event (July 28, 2005) on the hydrochemical characteristics of the Jungrang river, the biggest tributary of the Han river, was investigated. Significant spatial variations in the hydrochemical characteristics were observed. At JR2 location, concentrations of T-N and T-P were relatively low indicating occurrence of active oxidation in the stepped drop structure. At JR3 location, concentrations of Na, K, Cl, $NH_4-N$ and EC were elevated suggesting increased discharge from the nearby waste-water treatment plant and tributaries. The rain event diluted major dissolved ion concentrations in the river by 12~52%. The $NO_3-N$ levels were preserved during the rain then increased about twofold after rainfall, suggesting increased discharge of nitrate-contaminated groundwater. Heavy metals including Cd, Co, Cr, Cu and Pb were not detected in all water samples and the leachates from surface sediment samples. Concentrations of Fe, Mn, Al and Zn were below the Korean Drinking Water Guideline. Results of this study suggested that establishment of water-quality monitoring protocols describing temporal and spatial variations in parameters sensitive to rainfall events, relatively steady factors, and contaminant sources is required.
Keywords
Groundwater discharge; Hydrochemical characteristics; Jungrang river; Rainfall effect; Water-quality changes;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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