主な施策：利用 - 河川の管理区分について - 国土交通省水管理・国土保全局
https://www.mlit.go.jp/river/riyou/kubun/index.htmlBundle the HTML, screenshot, summaries, and metadata into one ZIP file. The first export request adds an external RFC 3161 timestamp before download.
主な施策：利用 - 河川の管理区分について - 国土交通省水管理・国土保全局
Open the dedicated viewer to inspect the saved page with archive metadata pinned above it.
This is a self-contained HTML copy with CSS and images embedded, so it still renders even if the original page disappears.
The dedicated viewer keeps the original URL and saved timestamp visible while you review the archived HTML.
This page explains Japan's river management classification system. Rivers are categorized into four types: Class I rivers, Class II rivers, Quasi-designated rivers, and Ordinary rivers. Class I rivers are managed by the Ministry of Land, Infrastructure, Transport and Tourism or prefectures (some by ordinance-designated cities); Class II rivers by prefectures; and both Quasi-designated and Ordinary rivers are managed by municipalities. The page provides detailed information about Class I rivers managed by the national government, including specific water system names, river names, managed sections, and contact information for regional offices.
