no79-85

[80] Sort of issues in the field of urban planning concerning the realization of river basin disaster resilience

- A Case Study of the Ai River Basin in Osaka Prefecture, Japan -

○Takumi YAMADA¹, Kensuke OTSUYAMA², U HIROI¹, Takaaki KATO³ (1. School of Engineering, The University of Tokyo, 2. Research Center for Advanced Science and Technology, The University of Tokyo, 3. Institute of Industrial Science, The University of Tokyo)

Keywords:Flood control measures, River basin disaster resilience, River improvement plan, Settlement trends

From the point of river basin disaster resilience through cooperation between urban planning and river improvement, this paper aims at identifying issues that arise in the field of urban planning, by examining urban flood control measures that are conforming to the place and basin-wide, based on the effects and limits of river improvement and future change in number of households. A comparison of flood risk before and after river improvement reveals that the effects of river improvement differ depending on the basin municipality. The study also revealed the need to consider long-term urban conditions and the need for consistency with flood control measures in the surrounding area and the urban planning system led by the municipality.