As a researcher affiliated with the Quaternary Research Society of Japan, he reported on the survey of disaster performance and disaster prevention measures in the lower reaches of the Tama River caused by Typhoon No. 19 in 2019. The factors causing flood damage, issues related to evacuation actions, and examples of responses by local governments and residents were presented, emphasizing the risk of inundation, especially in old river channels and low-lying areas, and the importance of early warning systems.