抄録
In this study, a numerical simulation of inundation flow in an urban area is carried out using fine information of altitude. The numerical model is two-dimensional shallow water model. The grid size is 1m, which is fine enough to understand overland flow in an urban area. The altitude data is obtained by altitude of lid of manhole distributed randomly in the study area. The resolution of the altitude data is 1cm, which is fine enough to represent the contrast of altitude in a flat urban area. The numerical results proved that the inundation flow is sensitively affected by the geophysical features with undulation in the area.
