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Hydrologic Component Analysis of the Seolma-Cheon Watershed by Using SWAT-K Model

SWAT-K 모형을 이용한 설마천 유역의 수문성분 해석

  • Kim, Nam-Won (Korea Institute of Construction Technology) ;
  • Lee, Ji-Eun (Department of Civil and Environmental Engineering, Yonsei University) ;
  • Chung, Il-Moon (Korea Institute of Construction Technology) ;
  • Kim, Dong-Pil (Korea Institute of Construction Technology)
  • 김남원 (한국건설기술연구원 수문연구실) ;
  • 이지은 (연세대학교 토목환경공학과) ;
  • 정일문 (한국건설기술연구원 수문연구실) ;
  • 김동필 (한국건설기술연구원 수문연구실)
  • Published : 2008.12.31

Abstract

In this study, long term semi distributed hydrologic model SWAT-K(Korea) is applied to the Seolma-Cheon watershed to analyze the hydrological components. Seolma-Cheon watershed has been operated as the test watershed of Korea Institute of Construction Technology for 13 years. Therefore it has an enough hydrologic data to analyze the hydrologic characteristics of small watershed. Especially, for the proper runoff analysis of steep watershed, calibration is performed reflecting the regression equation of slope and slope length. The simulated discharge shows good agreement with the observed one and the simulated evapotranspiration and groundwater discharge also show satisfactory results. Finally we presents the ratio of major hydrologic components for 3 years with those obsrved ones. This study is the basic research for future analyses such as relationship between hydrologic components and vegetation, watershed sediment nonpoint sources discharge etc.

Keywords

SWAT-K;Seolma-Cheon watershed;Hydrologic components;Evapotranspiration;Runoff

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