longest rivers in japan
Shinano. The Shinano River is the longest river in Japan, flowing from the Nagano Prefecture to the Niigata Prefecture. The Shinano is 367 kilometers (228 miles) in length. It originates on Mount Kobushi from the Japanese Alps of Honshu Island, and flows northwest, joining the Sai River.
The Tone River is the second longest Japanese river, with a length of about 322 kilometers (200 miles). It is located in the Kanto region, and it starts out at Mount Ominakami. From there, it picks up water from tributaries, and eventually drains into the Pacific Ocean at Choshi City.