The Sosva is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in Sverdlovsk Oblast

Sverdlovsk Oblast

Sverdlovsk Oblast is a federal subject of Russia located in the Urals Federal District. Its administrative center is the city of Yekaterinburg formerly known as Sverdlovsk. Population: -Geography:...

, Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

, a right tributary of the Tavda River

Tavda River

The Tavda River is a Siberian river that drains part of the central Ural mountains into the Tobol River. It is north of the Tura River and south of the Konda River. It is located in Sverdlovsk Oblast and Tyumen Oblast. It is formed by the confluence of the Lozva and Sosva Rivers. The length of...

. The length of the river is 635 kilometres (394.6 mi). The area of its drainage basin

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 is 24700 square kilometres (9,536.7 sq mi). The Sosva freezes up in early November and breaks up in April. It is navigable within 333 kilometres (206.9 mi) of its estuary

Estuary

An estuary is a partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea....

.

Its main tributaries are the Vagran, the Turya

Turya River

Turya is a river in Sverdlovsk Oblast, Russia. It is a right tributary of the Sosva, and is 128 km long, with a drainage basin of 1,160 km²....

, the Kakva

Kakva River

Kakva is a river in Sverdlovsk Oblast, Russia. It is a right tributary of the Sosva . The river starts by the base of the Kavkinsky Stone on the eastern slopes of the Ural Mountains, and flows eastwards to its confluence with the Sosva...

, and the Lyalya.