Sosva Сосьва (Russian)
Tobol river basin
Location
Country	Russia
Federal subject	Sverdlovsk Oblast
Physical characteristics
Source
• location	Northern Urals
• coordinates	60°7′43″N 59°7′36″E / 60.12861°N 59.12667°E / 60.12861; 59.12667
Mouth	Tavda
• coordinates	59°32′59″N 62°20′4″E / 59.54972°N 62.33444°E / 59.54972; 62.33444
• elevation	56 m (184 ft)
Length	635 km (395 mi)
Basin size	24,700 km2 (9,500 sq mi)
Discharge
• average	123.28 m3/s (4,354 cu ft/s)
Basin features
Progression	Tavda→ Tobol→ Irtysh→ Ob→ Kara Sea
Tributaries
• right	Vagran, Turya, Kakva, Lyalya

The Sosva (Russian: Сосьва) is a river in Sverdlovsk Oblast, Russia, a right tributary of the Tavda in the basin of the Ob. The length of the river is 635 kilometres (395 mi). The area of its drainage basin is 24,700 square kilometres (9,500 sq mi).^[1]

Course

The Sosva is formed at the confluence of the Big and Small Sosva in the eastern slopes of the Northern Urals. It flows across the West Siberian Lowlands. Finally it meets the right bank of the Tavda River 719 km from its mouth.

The Sosva freezes up in early November and breaks up in April. It is navigable within 333 kilometres (207 mi) of its estuary.^[2]

Its main tributaries are the Vagran, the Turya, the Kakva, and the Lyalya.^[1]