IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v17y2025i15p6999-d1715528.html
   My bibliography  Save this article

Flood Impact and Evacuation Behavior in Toyohashi City, Japan: A Case Study of the 2 June 2023 Heavy Rain Event

Author

Listed:
  • Masaya Toyoda

    (Department of Architecture and Civil Engineering, Toyohashi University of Technology, Toyohashi 441-8580, Aichi, Japan)

  • Reo Minami

    (Graduate School of Engineering, Toyohashi University of Technology, Toyohashi 441-8580, Aichi, Japan)

  • Ryoto Asakura

    (Nippon Koei Co., Ltd., Tokyo 102-8539, Japan)

  • Shigeru Kato

    (Department of Architecture and Civil Engineering, Toyohashi University of Technology, Toyohashi 441-8580, Aichi, Japan)

Abstract

Recent years have seen frequent heavy rainfall events in Japan, often linked to Baiu fronts and typhoons. These events are exacerbated by global warming, leading to an increased frequency and intensity. As floods represent a serious threat to sustainable urban development and community resilience, this study contributes to sustainability-focused risk reduction through integrated analysis. This study focuses on the 2 June 2023 heavy rain disaster in Toyohashi City, Japan, which caused extensive damage due to flooding from the Yagyu and Umeda Rivers. Using numerical models, this study accurately reproduces flooding patterns, revealing that high tides amplified the inundation area by 1.5 times at the Yagyu River. A resident questionnaire conducted in collaboration with Toyohashi City identifies key trends in evacuation behavior and disaster information usage. Traditional media such as TV remain dominant, but younger generations leverage electronic devices for disaster updates. These insights emphasize the need for targeted information dissemination and enhanced disaster preparedness strategies, including online materials and flexible training programs. The methods and findings presented in this study can inform local and regional governments in building adaptive disaster management policies, which contribute to a more sustainable society.

Suggested Citation

  • Masaya Toyoda & Reo Minami & Ryoto Asakura & Shigeru Kato, 2025. "Flood Impact and Evacuation Behavior in Toyohashi City, Japan: A Case Study of the 2 June 2023 Heavy Rain Event," Sustainability, MDPI, vol. 17(15), pages 1-18, August.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:15:p:6999-:d:1715528
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/17/15/6999/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/17/15/6999/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Masaya Toyoda & Nobuhito Mori & Sooyoul Kim & Yoko Shibutani & Jun Yoshino, 2024. "Assessment of compound occurrence of storm surge and river flood in Ise and Mikawa Bays, Japan using a framework of atmosphere–ocean–river coupling," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 120(4), pages 3891-3917, March.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      More about this item

      Keywords

      ;
      ;
      ;
      ;
      ;
      ;

      Statistics

      Access and download statistics

      Corrections

      All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:17:y:2025:i:15:p:6999-:d:1715528. See general information about how to correct material in RePEc.

      If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

      If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

      For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

      Please note that corrections may take a couple of weeks to filter through the various RePEc services.

      IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.