Karasu River (Gunma)
The Karasu River is a river located in Gunma Prefecture, Japan. It is a branch of the Tone River and the government of Japan classifies it as a Class 1 river. It generally flows in a south-easterly direction.The river passes through or forms the boundary of the following communities:
;Gunma Prefecture:
;Nagano Prefecture:
;Saitama Prefecture:Scenic areas
The river runs through the Karasugawa Ravine in Takasaki, which has hiking trails for visitors to access the river.
