Articles | Volume 26, issue 8
https://doi.org/10.5194/nhess-26-3969-2026
https://doi.org/10.5194/nhess-26-3969-2026
Research article
 | 
20 Aug 2026
Research article |  | 20 Aug 2026

Integrating flood-induced population movements into future fluvial flood damage estimates in Japan

Hayata Yanagihara, So Kazama, Kei Gomi, Yusuke Hiraga, and Atsuya Ikemoto

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Short summary
Flooding can influence population movements. However, most studies of future flood damage costs do not consider these movements. We examined how such movements may change future flood damage costs in Japan. National and prefectural effects were small, but some municipalities showed reductions of more than 10 % in these costs. These results show that considering population movements can improve future flood risk planning.
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