Mu River (Hokkaidō)

Mu River (鵡川, Mu-kawa) is a river in Hokkaidō, 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