| 1．Ōta River |
| Ōta River (太田川, Ōta-gawa) is a 103-kilometer (64 mile) long river in Hiroshima Prefecture, Japan. Its main stream originates in Mt. Kanmuri (冠山, Kanmuri-yama) (1,339m) and empties, through a flood-control channel, into the Seto Inland Sea. The river is one of the major rivers in the prefecture and descends through steep topography, with hydroelectric power plants situated along the river. |
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| 2．Ashida River |
| The Ashida River (芦田川, Ashida-gawa) is a river that flows through the eastern part of Hiroshima Prefecture, Japan. The river provides the primary drainage for the Bingo region. The source of the river is in the city of Mihara, Hiroshima and flows generally east toward Niimi, Okayama. After flowing through the Hattabara and Mikawa Dams in Fuchū, Hiroshima, the river passes through Fukuyama, Hiroshima, where it empties into the Seto Inland Sea. |
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| 3．Kunikane River |
| The Kunikane River (国兼川, Kunikane-gawa) is a river in Japan which flows from Lake Kunikane in Shōbara in Hiroshima Prefecture. |
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