한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제51권6호
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  • Pages.11-16
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  • 2009
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  • 1738-3692(pISSN)
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  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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SWAT을 이용한 미계측 유역의 유출곡선지수 산정

Estimation of Runoff Curve Number for Ungaged Watershed using SWAT Model

  • 발행 : 2009.11.30
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초록

This study is to suggest the SWAT model as inputs for the estimation of CN (Curve number) if we do not have hourly rainfall and runoff data in the ungaged watershed. The daily CNs were estimated by using SWAT model for Chungju dam watershed and the CNs by hourly rainfall and runoff data in the same period with daily CN estimation were also estimated. Then the daily and hourly CNs were compared each other. The CNs by SWAT model were larger than the actual CNs. 7.4% larger in AMC-I, 1.2% in AMC-II, and 6.3% in AMC-III respectively. If we consider various uncertainties in the estimation of CN, the error of 6.8% could be acceptable for the application in the field.

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참고문헌

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