Tenryū River

Tenryū River
天竜川
Lower Tenryu 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.