Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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Application Analysis of HSPF Model Considering Watershed Scale in Hwang River Basin

황강유역에서의 유역규모를 고려한 HSPF 모형의 적용성 평가

  • Choi, Hyun Gu (School of Architecture & Civil Engineering, Kyungpook National University) ;
  • Han, Kun Yeun (School of Architecture & Civil Engineering, Kyungpook National University) ;
  • Hwangbo, Hyun (Water Resources Division, Yooshin Engineering Corporation) ;
  • Cho, Wan Hee (Dam & Watershed Department, Kwater)
  • 최현구 (경북대학교 건축.토목공학부) ;
  • 한건연 (경북대학교 건축.토목공학부) ;
  • 황보현 ((주)유신 수공본부) ;
  • 조완희 (한국수자원공사 댐.유역관리처)
  • Received : 2011.04.21
  • Accepted : 2011.07.28
  • Published : 2011.08.31
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Abstract

The purpose of this study is to estimate overall reliability and applicability of the watershed modeling for systematic management of point and non-point sources via water quality analysis and prediction of runoff discharge within watershed. Recently, runoff characteristics and pollutant characteristics have been changing in watershed by anomaly climate and urbanization. In this study, the effects of watershed scale were analyzed in runoff and water quality modeling using HSPF. In case of correlation coefficient, its range was from 0.936 to 0.984 in case A(divided - 2 small watersheds). On the other hand, its range was form 0.840 to 0.899 in case B(united - 1 watershed). In case of Nash-Sutcliffe coefficient, its range was from 0.718 to 0.966 in case A. On the other hand, its range was from 0.441 to 0.683 in case B. As a result, it was judged that case A was more accurate than case B. Therefore, runoff and water quality modeling in minimum watershed scale that was provided data for calibration and verification was judged to be favorable in accuracy. If optimal watershed dividing and parameter optimization using PEST in HSPF with more reliable measured data are carried out, more accurate runoff and water quality modeling will be performed.

Keywords

References

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