Tenryū River

Tenryū River
天竜川
Lower Tenryū River in Hamamatsu
Physical characteristics
Source 
 • locationLake Suwa, Nagano Prefecture, Japan
 • elevation759 m (2,490 ft)
Mouth 
 • location
Philippine Sea
 • elevation
0 m (0 ft)
Length213 km (132 mi)
Basin size5,050 km2 (1,950 sq mi)
Discharge 
 • average135 m3/s (4,800 cu ft/s)
Basin features
River systemTenryū River

The Tenryū River (天竜川, Tenryū-gawa) is a river in central Honshū, Japan. With a length of 213 km (132 mi), it is Japan's ninth longest river.

Its source is Lake Suwa in the Kiso Mountains near Okaya in Nagano Prefecture. It then flows through Aichi Prefecture and western Shizuoka Prefecture.