Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
권호 표지

Application of Modified-WASP5 for Daecheong Dam Watershed Management

대청댐 유역관리를 위한 수정-WASP5 모형의 적용

  • Kim, Jinho (Div. of Enviro. & Eco., Nat'l Inst. of Agri. Sci. & Tech., Rural Development Administration) ;
  • Shin, Dongsuk (Water Pollution Cap System Division, National Institute of Environment Research) ;
  • Kwon, Sunkuk (Department of Landscape Architecture and Rural System Engineering, Seoul National University)
  • 김진호 (농촌진흥청 농업과학기술원 환경생태과) ;
  • 신동석 (국립환경과학원 수질총량과) ;
  • 권순국 (서울대학교 조경지역시스템공학부)
  • Received : 2007.01.04
  • Accepted : 2007.06.11
  • Published : 2008.01.30
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Abstract

The objective of this study was to develop and apply a water quality simulation model for the evaluation of ungaged watershed. The Modified WASP5 consisted of three sub-models, LOAD-M, DYN-M, and EUT-M. LOAD-M, an empirical model, estimates runoff loadings using point and non-point source data of villages. Daecheong Dam watershed was selected for the research to calibrate, verify and application of Modified-WASP5. LOAD-M model was established using field data collected from all items of water quality and water quantity gaging stations of the watersheds, and was applied to the ungauged watersheds, taking the watershed properties under consideration. The result of water quality simulation using ModifiedWASP5 shows that the observed BOD data of Yongpo and Daechong Dam in 1999 were 0.8 mg/L and 1.0 mg/L, and simulated data were 0.9 mg/L and 0.9 mg/L, respectively. In case of 1999, average BOD concentrations were 0.8 mg/L and 1.0 mg/L. Simulated concentration showed 1.1 mg/L and 1.5 mg/L, respectively. Generally, the simulation results were in good agreement with the observed data. This study was focused on formulating an integrated model for evaluating ungauged watersheds. Even though simulation results varied slightly due to limited availability of data, the model developed in this study would be a useful tool for the assessment and management of ungauged watersheds.

Keywords

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