FLOOD DAMAGE ESTIMATIONS BASED ON EXTREME PRECIPITATION AND DISCHARGE AND VARIATION IN THE FUTURE

Abstract

This study presented a method to assess the economical flood damages based on a hydraulic model, which took into account a spatial distribution of extreme precipitation estimated by statistical and meteorological characteristics. In order to estimate variation of precipitation in the future, we used cumulative distribution function of precipitation that was outputted by GCMs. The potential economic damage in 2100 (RCP8.5 scenario) for a flood of 100-year return period was estimated to be 107 billion USD. We evaluated the effect of flood control level using some GCMs with scenarios.