is a river in

Hokkaido is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The la ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. It is in length and has a drainage area of .

Course

The Mitsuishi River originates at Mount Setaushi () in the

Hidaka Mountains is a mountain range in southeastern Hokkaido, Japan. It runs from Mount Sahoro or Karikachi Pass in central Hokkaidō south, running into the sea at Cape Erimo. It consists of folded mountains that range from in height. Mount Poroshiri is ...

and flows roughly south to southwest. The river flows into a reservoir at the Mitsuishi Dam. The Mitsuishi Dam was completed on the river in 1992 to prevent the flow of earth and sand from the , which is prone to landslides. It then continues until it reaches the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

at Mitsuishi in Shinhidaka,

Tributaries

* (left) * (right) *Bebō River (left) * (left) *　(right) * (left) * (left) * or ''Ninth River on the Right'' (right)

References

External links

Rivers of Hokkaido Rivers of Japan Shinhidaka, Hokkaido {{Japan-river-stub