| 1．Azusa River |
| The Azusa River (梓川, Azusa-gawa) is a river within the Hida Mountains or Northern Japanese Alps, in the western region of Nagano Prefecture, Japan. The river belongs to the Shinano River watershed, and forms the upper section of the Sai River. The name of the river comes from the catalpa (梓, azusa, shi) tree found in the river basin, which are used for Azusa Yumi, a sacred bow in Shinto rituals. The river gives its name to the Azusa limited express train, which is operated by the East Japan Railway Company (JR East), and which runs mainly between Shinjuku Station in Tokyo and Matsumoto Station in Nagano.[1] |
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| 2．Yahagi River |
| The Yahagi River (矢作川, Yahagi-gawa) is a river that flows from Nagano Prefecture's Mount Ōkawairi, through Gifu Prefecture, and enters Mikawa Bay from Aichi Prefecture in Japan.[1] It is designated an A class river by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT). |
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| 3．Kiso River |
| The Kiso River (木曽川, Kiso-gawa) is a river in the Chubu region of Japan roughly 229 km (142 mi) long, flowing through the prefectures of Nagano, Gifu, Aichi, and Mie before emptying into Ise Bay a short distance away from the city of Nagoya.[1] It is the main river of the Kiso Three Rivers (along with Ibi and Nagara rivers) and forms a major part of the Nōbi Plain. The valley around the upper portion of the river forms the Kiso Valley. |
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