| Sakai River | |
|---|---|
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| Native name | 境川 (Japanese) |
| Location | |
| Country | Japan |
| Physical characteristics | |
| Source | |
| • location | Kakamigahara |
| Mouth | |
• location | Nagara River |
| Length | 30.3 km (18.8 mi) |
| Basin size | 55 km2 (21 sq mi) |
| Basin features | |
| River system | Kiso River |
The Sakai River (境川, Sakai-gawa) is a river in Japan which flows through Gifu Prefecture. It is part of the Kiso River system.