The Study of the Fitness on Estimation of the Flood Warning Rainfall Using UMcIUH in a Urban Area

Journal of the Korean Society of Hazard Mitigation 2014;14(6):91-103.
Published online December 31, 2014.

도시 지형기후학적순간단위도를 이용한 도시 유역의 홍수 경보우량 산정기법 검토 연구

박재범, 강두기, 신현석

The Study of the Fitness on Estimation of the Flood Warning Rainfall Using UMcIUH in a Urban Area

Abstract

We estimate the fitness to calculate the flood warning rainfall using UMcIUH(Urban Morpho-Climatic Unit Hydrograph) including hydraulic elements(street, pipes and channels etc) and climatic elements(upslope inflow, effective rainfall etc). Oncheon basin is separated to 7 subbasin and the result of UMcIUH model simulation is compared to the observation data and the result of EPA SWMM simulation. By using local regression equation and HEC-RAS model, danger discharge and flood warning rainfall are estimated according to three stage by considering high flood stage and low flood stage. We found that a methodology based UMcIUH and hydraulic model was very proper in the calculation of the flood warning rainfall at the condition of high flood and low flood.

Key Words: EPA SWMM; Flood warning rainfall; UMcIUH; Danger discharge; EPA SWMM

핵심용어: 경보우량; 도시지형기후학적순간단위도; 위험유량