The Soyang River (소양강, 昭陽江) or Soyanggang is a river in the centre of Gangwon-do that flows north eventually into the Bukhan River. It is 156.8 km in length with a total surface area of 2784.04㎢. It starts from Musan (무산, 巫山) mountain in Inje County. Tributaries to the river include Bukcheon, Bangcheon, Gyebangcheon and Naerincheon.
