| Agatsuma River | |
|---|---|
 Agatsuma River at Agatsuma Valley | |
| Native name | 吾妻川 (Japanese) |
| Location | |
| Country | Japan |
| Physical characteristics | |
| Source | Torii Pass |
| • location | Border of Gunma with Nagano |
| • coordinates | 36°29′20″N 138°23′53″E / 36.489°N 138.398°E |
| • elevation | 2,362 m (7,749 ft) |
| Mouth | Tone River |
• location | Shibukawa, Gunma |
• coordinates | 36°30′00″N 139°00′58″E / 36.5°N 139.016083°E |
• elevation | 166 m (545 ft) |
| Length | 76.22 km (47.36 mi) |
| Basin size | 1,366 km2 (527 sq mi) |
The Agatsuma River (吾妻川, Agatsuma-gawa) is a major river in the northern Kantō region of Japan. It is 76.22 kilometres (47.36 mi) in length and has a basin area of 1,366 square kilometres (527 sq mi). Located entirely within Gunma Prefecture, it is one of the prefecture's major rivers. It is also a major tributary of the Tone River. The river is an important source of hydroelectric power, and 17 power plants are located on its banks.[1]
- ^ "吾妻川流域のなりたち | 利根川水系砂防事務所 | 国土交通省 関東地方整備局". www.ktr.mlit.go.jp. Retrieved 2024-03-05.