www.mlit.go.jp/river/risk_communication/about_flood05.html
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水災害リスクコミュニケーションポータルサイト
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https://www.mlit.go.jp/river/risk_communication/about_flood05.html
About this page
This page is an overview of the Ministry of Land, Infrastructure, Transport and Tourism's Water Disaster Risk Communication Portal Site. It provides information to help people understand and mitigate water disaster risks such as flooding. The "Inundation Navigator" allows users to confirm specific inundation ranges and depths during levee failures, as well as temporal changes in flooding spread—details not available on traditional hazard maps. The government aims to complete flood inundation zone designations for primary and secondary rivers by fiscal year 2025, with 80% completion targeted for sewage rainfall inundation zones.
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