The determination of soil parameters is important in predicting the simulated surface runoff using either a distributed or a lumped rainfall-runoff model. Soil characteristics can be collected using remote sensing techniques and represented as a digital map. There is no universal agreement with respect to the determination of a representative parameter from a gridded digital map. Two representative methods, i.e., arithmetic and predominant, are introduced and applied to both FLO-2D and HEC-HMS to improve the model’s accuracy. Both methods are implemented in the Yongdam catchment, and the results show that the former seems to be more accurate than the latter in the test site. This is attributed to the high conductivity of the dominant soil class, which is A type.

Abstract
1. 서 론
2. 연구대상지역
3. 강우-유출 모형 FLO-2D
4. 연구 방법
5. 분석 결과
6. 결론 및 고찰
REFERENCES

• 이형근(대구대학교 토목공학과) | Hyeong-keun Lee (Department of Civil Engineering, Daegu University)
• 최영선(대구대학교 토목공학과) | Yeong-seon choi (Department of Civil Engineering, Daegu University)
• 이길하(대구대학교 토목공학과) | Khil-Ha Lee (Department of Civil Engineering, Daegu University) Corresponding author