Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Methodology for the Identification of Impaired Waters Using LDC for the Management of Total Maximum Daily Loads

오염부하지속곡선(LDC)을 이용한 수질오염총량관리 단위유역 목표수질 달성여부 평가방법

  • Park, Jun Dae (Water Pollution Load Management Research Division, Water Environment Research Department, National Institute of Environmental Research) ;
  • Oh, Seung Young (Water Pollution Load Management Research Division, Water Environment Research Department, National Institute of Environmental Research)
  • 박준대 (국립환경과학원 물환경연구부 수질총량연구과) ;
  • 오승영 (국립환경과학원 물환경연구부 수질총량연구과)
  • Published : 2012.09.30
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Abstract

Load Duration Curve(LDC) is a useful tool for analyzing water quality characteristics under various stream flow conditions. This study investigated the methods to identify impaired waterbodies in the assessment of water quality goal attainment by using LDC for the management of Total Maximum Daily Loads (TMDLs). Three methods were proposed. Non-typical regime exclusion method is a method to exclude water quality observations in the non-typical extreme flow conditions in order to minimize the influence of non-ordinary water quality. Flow regime weighted average method is a method to calculate weighted mean water quality instead of arithmetic mean in order to consider water characteristics properly on stream flow regime in addition to the effect of Non-typical regime exclusion method. Load exceeded interval comparison method is a method to compare the intervals between the attained and non-attained load duration periods on the LDC. The assessment of water quality goal attainment can be performed more reasonably and precisely considering water quality variations on stream flow conditions by applying these proposed methods.

Keywords

References

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