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http://dx.doi.org/10.5389/KSAE.2009.51.6.011

Estimation of Runoff Curve Number for Ungaged Watershed using SWAT Model  

Lee, Jin-Won (한국건설기술연구원)
Kim, Nam-Won (한국건설기술연구원)
Lee, Jeong-Woo (한국건설기술연구원)
Seo, Byung-Ha (인하대학교 토목공학과)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.51, no.6, 2009 , pp. 11-16 More about this Journal
Abstract
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.
Keywords
Runoff curve number; SWAT model; ungaged watershed; HEC-HMS model;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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