ABSTRACT : In this study, the recent frequent occurrence of flood disasters caused by typhoons and torrential rains has led to concerns about large-scale floods in urban areas. In particular, Koto, Tokyo, has a wide area at zero meters above sea level. Focusing on the ward, we grasped the current state of administrative measures, and grasped the trend of flood control measures assuming a large-scale flood in a private company with a head office function in Koto 5 wards. As a result, more than 80% of private enterprises with headquarters functions in Koto 5 districts are located in the inundation area, but there is a difference in administrative response in each district, and passive measures are also taken for the districts that are taking measures. In addition, it was clarified that only a small number of companies are taking countermeasures, and no countermeasures have been taken according to the risk of flooding. Given this situation, we proposed a procedure for flood control measures for companies.
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