KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지

Methodology for Estimating Ranges of SWAT Model Parameters: Application to Imha Lake Inflow and Suspended Sediments

SWAT 모형 매개변수의 적정 범위 추정방법개발 : 임하호 유입량 및 부유사량에의 적용

Kim, Bo-Kyung;Kim, Sang-Dan;Lee, Eun-Tae;Kim, Hung-Soo
김보경;김상단;이은태;김형수

  • Published : 20071100

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Abstract

This study simulates the runoff and sediments of Imha dam basin by the SWAT(Soil and Water Assessment Tool) model. Firstly, the ranges of runoff and sediment related parameters in SWAT model are selected based on the references for suggesting the proper ranges of the parameters. We simulate the runoff and suspended sediments by Monte Carlo method based on the suggested parameter ranges and compare the observations. For the simulation we use the interval-spaced sensitivity analysis for selecting the sensitive parameters and perform the range reduction of the parameters. And the Monte Carlo simulation is repeated for suggesting the proper range of parameters in Imha dam basin. The parameters in SWAT model are associated with the parameter characteristics and model structure and we found that the parameter uncertainty in the sediment simulation is more greater than that in the runoff simulation.

Keywords

References

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