A FlOOD RISK CURVE DEVELOPMENT FOR INUNDATION DISASTER CONSIDERING SPATIO-TEMPORAL RAINFALL DISTRIBUTION

Abstract

To manage flood disaster with an exceeding designed level, risk control based on appropriate risk assessment is essential. For probabilistic assessment of economic damage by flood disaster, a flood risk curve plays an important role, which is a relation between exceedance probability (magnitude of flood) and flood inundation damage. This research proposes a method to develop a flood risk curve, considering spatio-temporal distribution of precipitation. The developed method was applied to the Yura-gawa river basin in Kyoto, Japan, and risk curves of the basin with/without the effect of the existing dam were examined.