2019年台風第19号における栃木県佐野市の被害と住民避難の実態調査

本報告では，2019年（令和元年）台風第19号で一級河川利根川水系秋山川の堤防が2箇所で決壊するなどにより，多くの家屋浸水が発生した栃木県佐野市を対象として，佐野市役所に聞き取り調査を行い，豪雨時の被害の発生状況や避難情報の発令，避難の呼びかけ，住民の避難状況などを検証した．
佐野市役所では台風の接近を予想し，明るい時間帯に避難を完了させるよう早めに避難所を開設し，避難情報の発信などに取り組んでいた．しかし，住民の多くは強い雨が降り出した後，また，浸水が始まってから避難をしている．このため，迅速で安全な避難行動を促進するには，住民の防災リテラシーを高める取り組みが重要である．

Prompt and safe evacuation is important to prevent casualties from heavy rain disasters. When heavy rain is predicted, the government is required to encourage residents to take appropriate evacuation actions by transmitting accurate information.
In Typhoon No. 19 of 2019, many houses were flooded in Sano City, Tochigi Prefecture, as a result of the breakage of two banks of the Akiyama River in the Tone River system. In this report, we conducted an interview survey of Sano City staff to verify the occurrence of damage, the transmission and communication of evacuation information, and the evacuation of residents.
Since a strong typhoon was expected to approach, evacuation centers were opened and evacuation information was disseminated early so that residents could evacuate before it became dark. However, many residents evacuated after heavy rains or after the inundation began. In order to promote quick and safe evacuation behavior of residents, it is important to improve disaster prevention literacy of residents.

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