The determination of soil characteristics is important in the simulation of rainfall runoff using a distributed FLO-2D model in catchment analysis. Digital maps acquired using remote sensing techniques have been widely used in modern hydrology. However, the determination of a representative parameter with spatial scaling mismatch is difficult. In this investigation, the FLO-2D rainfall-runoff model is utilized in the Yongdam catchment to test sensitivity based on three different methods (mosaic, arithmetic, and predominant) that describe soil surface characteristics in real systems. The results show that the mosaic method is costly, but provides a reasonably realistic description and exhibits superior performance compared to other methods in terms of both the amount and time to peak flow.

Abstract
1. 서 론
2. 연구대상 및 자료
3. 분포형 강우-유출 모형
4. 연구방법
5. 수치모의 결과
6. 결론 및 고찰
REFERENCES

• 황지형(대구대학교 일반대학원 토목공학과) | Hwang Ji-hyeong (Department of Civil Engineering, Daegu University)
• 이길하(대구대학교 일반대학원 토목공학과) | Lee Khil-Ha (Department of Civil Engineering, Daegu University) Corresponding author