Ōno River
| Ōno River Ōno-gawa | |
|---|---|
Ōno River at Mie. | |
| Native name | 大野川 (Japanese) |
| Location | |
| Country | Japan |
| Prefectures | |
| Physical characteristics | |
| Mouth | |
• coordinates | 33°16′37″N 131°41′55″E / 33.276932°N 131.698611°E |
| Length | 107 km (66 mi) |
| Basin size | 1,465 km2 (566 sq mi) |
| Basin features | |
| River system | Ōno River |
| Dams | Hakusui Dam |
The Ōno River (大野川, Ōno-gawa) is a river that originates in Ōita Prefecture, Japan. After running through the southern and central portions of Ōita Prefecture, it runs through the eastern part of Kumamoto Prefecture and the northern part of Miyazaki Prefecture.
The Hakusui Dam, constructed in 1938, is one of twelve dams located on the river.
The river includes Harajiri Falls which is located in Bungo-Ōno, Ōita Prefecture.