Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
권호 표지

The Watershed Imperviousness Impact for the characteristic of stormwater runoff

유역의 불투수성에 따른 강우유출특성 비교

  • 함광준 (강원도보건환경연구원) ;
  • 김준현 (강원대학교 지구환경공학부) ;
  • 허범녕 (강원도보건환경연구원) ;
  • 최지용 (강원도보건환경연구원) ;
  • 김영진 (강원도보건환경연구원)
  • Received : 2006.01.03
  • Accepted : 2006.03.09
  • Published : 2006.04.30
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Abstract

The purpose of this study is to understand imperviousness impact for the characteristics of stormwater runoff and water temperature. The land-use map was used to estimate the watershed imperviousness(percent of impermeable area) and the RMS(Remote Monitoring System) was used to evaluate the stormwater runoff of watershed. This study was investigated for two streams(Jiam and Gongji) in Chunchon City. The detailed results of these studies are as follows; The imperviousness(%) of two watersheds(Jiam and Gongji) estimated by spatial analysis which is main function of GIS were 0.24% and 24.16%. So, Gongji watershed as urban area was about 100 times than jiam watershed as forest area. In case of rainfall of low intensity, stormwater runoff flowrate in higher imperviousness area(Gongji) was more than it in forest area(jiam). Also, The time to peak flowrate(Tp) was short in Gongji stream and the water temperature difference between Gongji and Jiam stream was about $4.4^{\circ}C$ in summer.

Keywords

References

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