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Oct 3, 2025 4 min

バックウォーター現象

from 防災 FRONT LINE Hosted by TOKYO FM

「バックウォーター現象」という言葉をご存じですか? 大雨などで本流の水位が上昇した際に、支流である中小河川の水が本流に流れ込めず、行き場を失う事で逆流や氾濫を引き起こす現象です。 大きい河川だけでなく中小河川も危険がある事を知っておきましょう。 秋になっても秋雨前線がもたらす大雨に注意が必要です!

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バックウォーター現象

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