Shinano River

Shinano River 信濃川
The Shinano River in Niigata just before it flows into the Sea of Japan
Location
Country	Japan
Prefectures	Nagano, Niigata
Cities	Niigata, Nagaoka, Nagano, Matsumoto
Physical characteristics
Source	Mount Kobushi
- location	Japanese Alps, Nagano Prefecture
- coordinates	35.913°N 138.7194°E / 35.913; 138.7194
- elevation	2,475 m (8,120 ft)
Mouth	Sea of Japan
- location	Niigata Prefecture
- elevation	0 m (0 ft)
Length	367 km (228 mi)
Basin size	11,900 km2 (4,600 sq mi)
Discharge
- location	Ojiya
- average	503 m3/s (17,800 cu ft/s)
- minimum	91 m3/s (3,200 cu ft/s)
- maximum	3,776 m3/s (133,300 cu ft/s)
Basin features
Tributaries
- left	Urano River, Sai River (Nagano)
- right	Yu River (Nagano), Hoshina River, Ayu River, Yagisawa River, Matsu River, Uono River

The Shinano River (Japanese: 信濃川) is the longest river in Japan that flows through Niigata and Nagano prefectures.