Mu River (Hokkaidō)
# Mu River (Hokkaidō)

Mu River (鵡川, Mu-kawa) is a river in Hokkaido, Japan. Located in Kamikawa and Iburi subprefectures, it is one of 13 major 'class 1' rivers on the island.

## Course

The Mu River rises on the slopes of Mount Karifuri in the Hidaka Mountains. It flows south and west until it reaches the Pacific Ocean at Mukawa.

## Dams

| Class 1 river name | Class 2 river name | Name | Height (m) | Water storage capacity (per 1000 m³) | Type | Operator |
| - | - | - | - | - | - | - |
| Mu River | Soshubetsu River | Soshubetsu Dam | 29.0 | 1,330 | Concrete | Hokkaido Electric Power Company |
| Mu River | Hobetsu River | Hobetsu Dam | 38.2 | 10,330 | Rockfill | Hokkaido Regional Development Bureau |

## Tributaries

Shimukappu (upper reaches):

* Horoka Tomamu River
* Soshubetsu River
* Pankeshuru River
* Shimu River

Mukawa (lower reaches):

* Ososukenai River
* Tosano River
* Horosaru River
* Hobetsu River
* Rubeshibe River
* Kinausu River
* Inaeppusawa River
* Niwan River
* Yunosawa River
* Chin River
