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http://dx.doi.org/10.11108/kagis.2020.23.3.174

A Study on the Applicability of Load Duration Curve for the Management of Nonpoint Source Pollution in Seohwacheon Basin  

KAL, Byung-Seok (Daonsolution. Co., Ltd.)
MUN, Hyun-Saing (Geum River Environmental Research Center, National Institute of Environmental Research)
HONG, Seon-Hwa (Geum River Environmental Research Center, National Institute of Environmental Research)
PARK, Chun-Dong (Geum River Environmental Research Center, National Institute of Environmental Research)
MIN, Kyeong-Ok (Geum River Environmental Research Center, National Institute of Environmental Research)
PARK, Jae-Beom (Daonsolution. Co., Ltd.)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.23, no.3, 2020 , pp. 174-191 More about this Journal
Abstract
In this study, we analyzed the vulnerable areas of non-point source pollutants and management pollutants and management time by subwatershed curves in the Seohwacheon basin located upstream of Daecheongho. First, in order to create a load duration curve, a long-term flow model SWAT was constructed to create a flow duration curve, and the result was multiplied by the target water quality to create a load duration curve. For the target water quality, monitoring data values measured from November 2017 were used for the management of nonpoint source pollutants in Seohwacheon, and a value corresponding to 60 percentile of the measured data was set as the target water quality. At this time, the target water quality was limited to"slightly good"(II) when the calculated value exceeded"slightly good"(II) of the river living environment standard. The vulnerable areas of non-point source of pollution were selected using the excess rate exceeding the target water quality, and the excess pollutant was judged as a management substance and the management time was selected through seasonal evaluation.
Keywords
Load Duration Curve(LDC); Non-point source; Seohwacheon; SWAT;
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Times Cited By KSCI : 8  (Citation Analysis)
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