2019 年 35 巻 p. 287-294
This study aims at examining the characteristics of flood area caused by the heavy rain event of July 2018 and clarifying the relationship with flood estimated inundation area and transition of residential land development . Findings are as follows; (1) 32% of residential areas in urban planning area are distributed in the flood area (2) inundation assumption areas cover about 85% of the flood area (3) Most of the residential areas developed before 1947 are distributed outside of the flood area, while many residential areas developed after 1962 are distributed in flood area. (4) More than half of recent conversion of farmland to residential areas are conducted in flood area.
