Insar River

Insar River in the city of Saransk, frozen in winter.

Insar (Russian: Инса́р) is a river in the Mordovian republic of Russia. It is a right tributary of the Alatyr River. It is 168 km long, with a drainage basin of 3860 km². The river gets most of its water from melting snow, and hence its discharge is at its highest during the spring thaw. Average discharge at Saransk is 7,71 m³/s. The river freezes over in November, and is icebound until April.

Towns by the Insar is Ruzayevka and Saransk.

Coordinates: 54°42′53″N 45°18′07″E / 54.71472°N 45.30194°E