Fundamental Assessment of Inundation Risk at Post Offices

Abstract

The purpose of this study is to conduct a fundamental assessment of disaster risks to enable Japan Post Co., Ltd. to effectively respond to disasters and enhance its response capabilities, in order to fulfill its responsibilities as a designated public institution. This paper focuses specifically on flood risk and evaluates the inundation risk at post offices nationwide, which provide postal and logistics functions. To assess the flood risk, we imported flood inundation forecast area data and post office location data into QGIS and visualized the inundation risk at each location. As a result of evaluating 1,158 locations, we identified locations at risk of flooding, visualized them on a map, and clarified the risk trends for each prefecture through an exposure assessment.