Takahara River
The Takahara River has its source at Mount Norikura in the northern part of Gifu Prefecture, Japan, and flows into Toyama Prefecture, where it joins with the Jinzū River. It is a Class 1 River.
The river was polluted with cadmium due to mining at the Kamioka mines and caused the itai-itai disease outbreak in downstream towns that began shortly before World War II.The river passes through or forms the boundary of the following communities:
;Gifu Prefecture:
;Toyama Prefecture:
