水系: 荒川水系（東京都）
あらかわすいけい（とうきょうと）
日本の水系>荒川水系>荒川水系（東京都）>
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荒川水系（東京都）>荒川水系（東京都）の水路>
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荒川水系（東京都）>荒川水系（東京都）の水路>