Tsna River (Tver Oblast)

Position of Zna ( Цна ) in the catchment area of the Volkhov

The Zna (Russian Цна ) is a 160 km long river in the river system of the Neva in Russia's Tver Oblast.

It rises in the Valdai Hills near the watershed between the Neva and Volga. From there it flows predominantly in a northerly direction. The river is dammed just before the city Wyschni Wolotschok to 109 km ² Wyschnewolozkoje reservoir. Then flows through the Zna Wyschni Wolotschok and empties into the Mstino Lake. This is drained by the MSTA to Ilmensee out. Much of the water, however the Wyschnewolozkoje Reservoir, derived via a channel to Twerza, a Volga tributary.

The catchment area of ​​approximately 4420 km ² comprises Zna. The average discharge 38 km upstream of the mouth is 12.3 m³ / s

Due to its location earlier introduced an important trade route along the river.