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Application of the Load Duration Curve (LDC) to Evaluate the Achievement Rate of Target Water Quality in the Han-River Watersheds
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 Title & Authors
Application of the Load Duration Curve (LDC) to Evaluate the Achievement Rate of Target Water Quality in the Han-River Watersheds
Kim, Eunkyoung; Ryu, Jichul; Kim, Hongtae; Kim, Yongseok; Shin, Dongseok;
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 Abstract
Water quality in four major river basin in Korea was managed with Total Maximum Daily Load (TMDL) System. The unit watershed in TMDL system has been evaluated with Target Water Quality (TWQ) assessment using average water quality, without considering its volume of water quantity. As results, although unit watershed are obtained its TWQ, its allocated loads were not satisfied and vice versa. To solve these problems, a number of TWQ assessments with using Load Duration Curve (LDC) have been studied at other watersheds. The purpose of this study was to evaluate achievement of TWQ with Flow Duration Curve (FDC) and Load Duration Curve(LDC) at 26 unit watersheds in Han river basin. The results showed that achievement rates in TWQ assessment with current method and with LDC were 50~56 % and 69~73%, respectively. Because of increasing about 20% of achievement rates with using LDC, the number of exceeded unit watershed at Han river Basin was decreased about 4~6 unit watersheds.
 Keywords
Han-River;LDC (Load Duration Curve);Target Water Quality;TMDLs (Total Maximum Daily Loads);
 Language
Korean
 Cited by
1.
Study on the Application of Spatial-analysis of Pollutants and Load Duration Curve for Efficient Implementation of TMDLs system, Journal of Korean Society of Environmental Engineers, 2017, 39, 12, 655  crossref(new windwow)
2.
Water Pollution Source Tracing Using FDC and Correlation Analysis in Geumho River Basin, Journal of Wetlands Research, 2016, 18, 3, 232  crossref(new windwow)
3.
Development of Desktop-Based LDC Evaluation System for Effectiveness TMDLs, Journal of The Korean Society of Agricultural Engineers, 2016, 58, 4, 67  crossref(new windwow)
4.
Application of the Load Duration Curve (LDC) to Evaluate the Rate of Achievement of Target Water Quality in the Youngsan · Tamjin River Watersheds, Journal of Korean Society on Water Environment, 2016, 32, 4, 349  crossref(new windwow)
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