The is a Class A river in the Tōhoku region of northern Honshū in Japan. It is long and has a watershed of . The section near the mouth of the river, flowing through Noshiro city, it is also known as the Noshiro River.
The river rises from Mount Nakadake and Mount Shikakudake in the Ōu Mountains and Mount Hachimantai near the border of Akita Prefecture with Iwate and Aomori Prefectures, and flows west through the Hanawa and Odate basins in northern Akita Prefecture and into the Sea of Japan at Noshiro, Akita.
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