The Tsubo River (津保川, Tsubo-gawa) has its source in the northeastern portion of the city of Seki, Gifu Prefecture, Japan. From there, it flows through Gifu and into the Nagara River. It is part of the Kiso River system. The river passes through or forms the boundary of the following communities: | ||||||
Mouth: | ||||||
Length: 45.8 km (28.5 mi) | ||||||