Application of Load Duration Curve and Estimation of Delivery Ratio by Flow Durations Using Discharge-Load Rating Curve at Jiseok Stream Watershed

유량-부하량관계식을 이용한 지석천 유역의 부하지속곡선 적용 및 유황별 유달율 산정

  • Park, Jinhwan (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Kim, Kapsoon (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Hwang, Kyungsup (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Lee, Yongwoon (Department of Environmental Engineering, Chonnam National University) ;
  • Lim, Byungjin (Yeongsan River Environment Research Center, National Institute of Environmental Research)
  • 박진환 (국립환경과학원 영산강물환경연구소) ;
  • 김갑순 (국립환경과학원 영산강물환경연구소) ;
  • 황경섭 (국립환경과학원 영산강물환경연구소) ;
  • 이용운 (전남대학교 환경공학과) ;
  • 임병진 (국립환경과학원 영산강물환경연구소)
  • Published : 2013.07.30

Abstract

This study has been carried out to clarify the characteristics of discharge and pollutant loading according to flow conditions at jiseok stream watershed (JSW). A flow rate and pollutant load in the study watershed were estimated by equation of stage-discharge and discharge-loads rating curve. By using the methods above, I've evaluated the water quality (WQ) of the JSW if it is satisfied with the standard target. I've collected the data of BOD and T-P from the JSW every 8 days for the duration of 12 months. And then, I've schematized the data upon the load duration curve and the results showed me that the WQ of JSW was satisfied with the standard target. I've also collected the same data every each day for the duration of 12 months from JSW and have schematized the data again. And the results showed that it also was satisfied with the standard target. To be concluded, I've determined that point pollution sources of JSW gives more significant impacts to the WQ than non-point pollution sources of JSW and hence, as time goes, point pollution sources will keep depriciating the WQ of JSW. Therefore, further efforts will be required to JSW to maintain the WQ.

Keywords

References

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