PREDICTION OF URBAN INUNDATION IN CAUSED BY TORRENTIAL RAIN IN YOKOHAMA CITY, KAWSAKI CITY ON AUGUST 22, 2016

Abstract

 In recent years, extreme weather has been exacerbating on a global scale. Therefore, heavy rainfall has been frequent in many places. This is no exception in the metropolis, and people will suffer from river floods and rainfall inundation if rains are unprecedented. In this study, Yokohama city and Kawasaki city, which contain the Tsurumigawa river basin, were taken as the objects, and the actual rainfall data observed on August 22, 2016, by the X-band MP radar of the ministry of land were used for reproduction calculation. Although precision verification has been carried out in the 23 wards of Tokyo before, the comparison between the result of this reproduction calculation and the water depth and river depth at that time can confirm that S-uiPS is also applicable in other cities. Furthermore, the calculation includes a part of gutters in some areas of Kawasaki city in this study. In the future, S-uiPS can also be applied to moderately urbanized areas, and its usage method is also described in the paper.