Ōi River

Ōi River
Convergence of the upper Ōi and Sumata Rivers.
Native name大井川 (Japanese)
Physical characteristics
Source 
  locationMount Aino, Akaishi Mountains, Japan
  elevation3,189 m (10,463 ft)
Mouth 
  location
Suruga Bay
  elevation
0 m (0 ft)
Length168 km (104 mi)
Basin size1,280 km2 (490 sq mi)
Discharge 
  average76.40 m3/s (2,698 cu ft/s)
Basin features
BridgesHōrai Bridge
DamsTashiro Dam

The Ōi River (大井川, Ōi-gawa) is a river in Shizuoka Prefecture, Japan.