Karasu River (Gunma)

The Karasu River (烏川) 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.

River communities
The river passes through or forms the boundary of the following communities:


 * Gunma Prefecture:
 * Takasaki, Fujioka, Tamamura


 * Nagano Prefecture:
 * Saku


 * Saitama Prefecture:
 * Kamisato, Honjō

Scenic areas
The river runs through the Karasugawa Ravine in Takasaki, which has hiking trails for visitors to access the river.