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http://dx.doi.org/10.12652/Ksce.2013.33.2.529

Parameter Estimation of SWAT Model Using SWAT-CUP in Seom-river Experimental Watershed  

Choi, Heung Sik (Dept. of Civil Engineering, Sangji University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.33, no.2, 2013 , pp. 529-536 More about this Journal
Abstract
The semi-distributed rainfall runoff model of SWAT is applied to the Seom-river experimental watershed. The simulations of various antecedent periods before the targeted simulation periods of 2002 to 2009 are not necessary despite of the slight appearance of corresponding changes in simulated total runoff. The simulated results of total runoff by using various numbers of soil layer maps have little differentiated nevertheless the slight changes in simulated results have been appeared. The 7 parameters of CANMX, $CN_2$, ESCO, GW_REVAP, SOL_ALB, SOL_AWC, and SOL_K greatly govern the rainfall runoff are confirmed and their sensitivity analyses have been carried out. The optimal parameters used in SWAT are derived by SUFI-2 of SWAT-CUP. The NS and $R^2$ are 0.99 and 0.98, respectively which is shown the good agreement between the observed and the simulated results. The uncertainty factors of P-factor and R-factor are 0.85 and 0.06, respectively which is also shown the high efficiency of the model. The high applicability is also shown with improving the RMSE in SWAT model simulation using the parameters estimated by SUFI-2 of SWAT-CUP.
Keywords
SWAT; SWAT-CUP; SUFI-2; Antecedent simulation; Usersoil; Parameter;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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