Agatsuma River

The Agatsuma River is a major river in the northern Kantō region of Japan. It is in length and has a basin area of. Located entirely within Gunma Prefecture, it is one of the prefecture's major rivers. It is also a major tributary of the Tone River. The river is an important source of hydroelectric power, and 17 power plants are located on its banks.

Geography

The source of the Agatsuma River is Torii Pass, on the border of Gunma and Nagano Prefectures. It gathers tributaries from Mount Asama and Mount Kusatsu-Shirane and flows into the Tone River in Shibukawa city. The Agatsuma River drains most of northwest Gunma Prefecture.

Transportation

The East Japan Railway Company's Agatsuma Line runs along the river from Shibukawa Station in the east to the terminus at Omae Station in the west. Roughly divided into three sections, the river can be travelled by road using three National Highways: National Route 353, National Route 145, and National Route 144.