Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Application of Web-based Load Duration Curve System to TMDL Watersheds for Evaluation of Water Quality and Pollutant Loads

수질오염총량제도 유역의 수질 및 부하량 평가를 위한 웹기반 LDC 시스템의 적용

  • Kang, Hyunwoo (Department of Regional Infrastructures Engineering, Kangwon National University) ;
  • Ryu, Jichul (Department of Regional Infrastructures Engineering, Kangwon National University) ;
  • Shin, Minhwan (Department of Regional Infrastructures Engineering, Kangwon National University) ;
  • Choi, Joongdae (Department of Regional Infrastructures Engineering, Kangwon National University) ;
  • Choi, Jaewan (National Institute of Environmental Research) ;
  • Shin, Dong Seok (National Institute of Environmental Research) ;
  • Lim, Kyoung Jae (Department of Regional Infrastructures Engineering, Kangwon National University)
  • 강현우 (강원대학교 지역건설공학과) ;
  • 류지철 (강원대학교 지역건설공학과) ;
  • 신민환 (강원대학교 지역건설공학과) ;
  • 최중대 (강원대학교 지역건설공학과) ;
  • 최재완 (국립환경과학원 수질총량연구과) ;
  • 신동석 (국립환경과학원 수질총량연구과) ;
  • 임경재 (강원대학교 지역건설공학과)
  • Received : 2011.08.16
  • Accepted : 2011.09.07
  • Published : 2011.09.30
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Abstract

In South Korea, Total Maximum Daily Load (TMDL) has been enforced since 2004 to restore and manage water quality in the watersheds. However, the appraisal of TMDL in South Korea has lots of weaknesses to establish the plan for recovery of water quality because it just evaluates the target water quality during the particular flow duration interval. In the United States, Load Duration Curve (LDC) method bas been widely used in the TMDL to evaluate the water quality and pollutant loads considering variation of stream flow. In a recent study, web-based Load Duration Curve system was developed to create the LDC automatically and provide the convenience of use. In this study, web-based Load Duration Curve system was applied in the Gapyeongcheon watershed using the daily flow and 8-day interval water quality data, and Q-L Rating Curve was used to evaluate the water quality and pollutant load in the watershed, also. As a result of study, water quality and pollutant load in Gapyeongcheon watershed were met with water quality standard and allocated load in the all flow durations. Web-based Load Duration Curve system could be applied to the appraisal of South Korean TMDL because it can be used to judge the impaired flow duration and build up the plan of load reduction, and it could enhance the publicity. But, web-based Load Duration Curve system should be enhanced through addition of load assessment tools such as Q-L rating curve to evaluate water quality and pollutant load objectively.

Keywords

References

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