Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Estimation of Design Flood Runoff in Ungaged Forest Watershed to Reduce Flood Damage within the National Park

국립공원내 홍수피해 저감을 위한 미계측 산림지역의 설계홍수량 추정

  • 김상민 (경상대학교 지역환경기반공학과 (경상대학교 농업생명과학연구원)) ;
  • 임상준 (서울대학교 산림과학부 (서울대학교 농업생명과학연구원)) ;
  • 이상호 (서울대학교 산림과학부 (서울대학교 농업생명과학연구원)) ;
  • 김형호 (경상대학교 환경산림과학부 (경상대학교 농업생명과학연구원)) ;
  • 마호섭 (경상대학교 환경산림과학부 (경상대학교 농업생명과학연구원)) ;
  • 정원옥 (국립공원관리공단 국립공원연구원)
  • Published : 2009.09.30
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Abstract

The purpose of this study is to estimate the design flood runoff for ungaged forest watershed to reduce the flood damage in national park. Daewonsa watershed in Jirisan National Park was selected as study watershed, of which characteristic factors were obtained from GIS data. Flood runoff was simulated using SCS unit hydrograph module in HEC-HMS model. SCS Curve Number (CN) was calculated from forest type area weighted average method. Huff's time distribution of second-quartile storm of the Sancheong weather station, which is nearest from study watershed, was used for design flood runoff estimation. Critical storm duration for the study watershed was 3 hrs. Based on the critical duration, the peak runoff for each sub-watershed were simulated. It is recommended to monitor the long-term flow data for major stream stations in National Park for a better reliable peak runoff simulation results.

Keywords

References

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  2. Flood Risk Assessment Based on Bias-Corrected RCP Scenarios with Quantile Mapping at a Si-Gun Level vol.55, pp.4, 2013, https://doi.org/10.5389/KSAE.2013.55.4.073