Sai River (Nagano)
| Sai River | |
|---|---|
| Native name | 犀川 (Japanese) |
| Location | |
| Country | Japan |
| Prefectures | Nagano |
| Cities | Nagano, Azumino, Matsumoto |
| Physical characteristics | |
| Source | |
| • coordinates | 36°16′52″N 137°56′47″E / 36.2812°N 137.9464°E |
| Mouth | Shinano River |
• location | Nagano |
• coordinates | 36°37′31″N 138°14′54″E / 36.6253°N 138.2483°E |
| Length | 153 km (95 mi) |
| Basin size | 2,773 km2 (1,071 sq mi) |
The Sai River (犀川, Sai-gawa), is a river in Japan, located in northeastern Honshu and flowing generally northeast through Nagano Prefecture. It is a tributary of Shinano River, the longest river in Japan.
The Sai River is 153 km long with a watershed of 2773 sq km, and has its source at the confluence of rivers Azusa and Narai in Matsumoto city.