Agatsuma River

Agatsuma River
Agatsuma River at Agatsuma Valley
Native name	Ngô thê xuyên(Japanese)
Location
Country	Japan
Physical characteristics
Source	Torii Pass
• location	Border of Gunma with Nagano
• coordinates	36°29′20″N138°23′53″E
• elevation	2,362 m (7,749 ft)
Mouth	Tone River
• location	Shibukawa, Gunma
• coordinates	36°30′00″N139°00′58″E
• elevation	166 m (545 ft)
Length	76.22 km (47.36 mi)
Basin size	1,366 km2(527 sq mi)

TheAgatsuma River(Ngô thê xuyên,Agatsuma-gawa)is a majorriverin the northernKantō regionofJapan.It is 76.22 kilometres (47.36 mi) in length and has a basin area of 1,366 square kilometres (527 sq mi). Located entirely withinGunma Prefecture,it is one of the prefecture's major rivers. It is also a major tributary of theTone River.The river is an important source ofhydroelectric power,and 17 power plants are located on its banks.

Geography

The source of the Agatsuma River isTorii Pass(1,362 metres (4,469 ft) in altitude), on the border ofGunmaandNagano Prefectures.It gathers tributaries fromMount AsamaandMount Kusatsu-Shiraneand flows into theTone RiverinShibukawacity. The Agatsuma River drains most of northwest Gunma Prefecture.

Transportation

TheEast Japan Railway Company'sAgatsuma Line(a single track line) runs along the river fromShibukawa Stationin the east to the terminus atOmae Stationin the west. Roughly divided into three sections, the river can be travelled by road using three National Highways:National Route 353(in the east),National Route 145(in the middle), andNational Route 144(in the west).