ANALYSIS OF PLUVIAL FLOOD BASED ON FUTURE RAINFALL FROM d4PDF

Abstract

 Recently, heavy rainfall is increasing in urban areas and pluvial flood caused damage such as flooding above floor level. Therefore, it is an urgent task to develop a flood control plan that take into consideration the impact of climate change. In this study, we calculated 10-year precipitation for future climate in Osaka's Umeda district from out-put rainfall of climate model using d4PDF which is massive ensemble climate prediction data. As the result, it became clear that the rainfall intensity and total rainfall both increase compared with the present planned rainfall. Further-more, it was indicated that the reduction of inflow water by installing a water stop board at the entrance is effective for the future hourly maximum rainfall event.