The Tsna () is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

in Kuvshinovsky, Ostashkovsky, Firovsky, and

Vyshnevolotsky District Vyshnevolotsky District (russian: Вышневоло́цкий райо́н) is an administrative and municipalLaw #4-ZO district (raion), one of the thirty-six in Tver Oblast, Russia. It is located in the north of the oblast and borders with Udo ...

s of

Tver Oblast Tver Oblast (russian: Тверска́я о́бласть, ''Tverskaya oblast'', ), from 1935 to 1990 known as Kalinin Oblast (), is a federal subject of Russia (an oblast). Its administrative center is the city of Tver. It was named after Mikhai ...

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

. It flows into

Lake Mstino Mstino () is a lake in Tver Oblast, Russia, in the Valdai Hills area. Its main outflow is Msta River. The lake occupies an area of , its length is , width . It lies at an altitude of 154 meters, with maximum depth of 10 meters. References See a ...

, which is drained by the

Msta The Msta () is a river in Tver and Novgorod Oblasts of northwestern Russia, a tributary of Lake Ilmen. It is long, and the area of its basin . The principal tributaries of the Msta are the Berezayka (left), the Uver (right), the Peretna (left ...

and belongs to the

drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, t ...

of the

Neva The Neva (russian: Нева́, ) is a river in northwestern Russia flowing from Lake Ladoga through the western part of Leningrad Oblast (historical region of Ingria) to the Neva Bay of the Gulf of Finland. Despite its modest length of , it ...

and the

Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and from ...

. It is long, and the area of its basin . The principal tributaries of the Tsna are the Belaya (right) and the Shlina, that flows into the .«Река Шлина»
Russian State Water Registry In 1719, the river was dammed some 10 km above its mouth, creating the Vyshny Volochyok Reservoir. The source of the Tsna is located close to the

drainage divide A drainage divide, water divide, ridgeline, watershed, water parting or height of land is elevated terrain that separates neighboring drainage basins. On rugged land, the divide lies along topographical ridges, and may be in the form of a singl ...

between Neva and

Volga The Volga (; russian: Во́лга, a=Ru-Волга.ogg, p=ˈvoɫɡə) is the List of rivers of Europe#Rivers of Europe by length, longest river in Europe. Situated in Russia, it flows through Central Russia to Southern Russia and into the Cas ...

(

Caspian Sea The Caspian Sea is the world's largest inland body of water, often described as the world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad steppe of Central Asia ...

) drainage basins, and Tsna used to be an important trade route in the Middle Ages. The town of

Vyshny Volochyok Vyshny VolochyokThe more-regular spelling Vyshny Volochok ( rus, Вы́шний Волочо́к)—with instead of after an unpaired " hush consonant"—is seen but is not official; the two spellings are pronounced the same in Russian. ( rus, ...

and the urban-type settlement of Velikooktyabrsky are located on the banks of the Tsna. The source of the Tsna is located in the

Valdai Hills The Valdai Hills (russian: Валда́йская возвы́шенность, Valdáyskaya vozvýshennost'), sometimes referred to as just Valdai (russian: Валда́й, Valdáy), are an upland region in the north-west of central European Ru ...

, in Kuvshinovsky District south of the village of

Konakovo Konakovo ( rus, Конако́во, p=kənɐˈkovə) is a town and the administrative center of Konakovsky District in Tver Oblast, Russia, located on the right bank of Ivankovo Reservoir (Volga River). Population: History Konakovo was founde ...

. It flows south and southeast, and in the village of Mogilyovka turns north. A stretch of the Tsna forms a border between Kuvshinovsky and Ostashkovsky Districts, and a short stretch north of the first one forms the border between Kuvshinovsky and Firovsky Districts. North of this stretch, the Tsna enters Firovsky District and gradually turns northeast. Downstream of the village of Kuznetsovo the Tsna enters Vyshnevolotsky District. Its mouth is by the village of

Nikiforovo Nikiforovo (russian: Никифорово) is a rural locality (a village) in Ukhotskoye Rural Settlement of Kargopolsky District, Arkhangelsk Oblast, Russia. The population was 46 as of 2010. Geography Nikiforovo is located 57 km southwest of ...

, where the Tsna joins the Vyshny Volochyok Reservoir. The natural course of the Tsna proceeds to Lake Mstino, which is connected with the reservoir by a canal, however, currently the Vyshny Volochyok Reservoir regulates the discharge between the drainage basins of the Volga (via the

Tvertsa The Tvertsa () is a river in Vyshnevolotsky, Spirovsky, Torzhoksky, and Kalininsky Districts, as well as in the cities of Torzhok and Tver in Tver Oblast, Russia, a left tributary of the Volga. It is long, and the area of its basin . The princ ...

) and the Neva (via the

, which flows out of Lake Mstino). The drainage basin of the Tsna includes the western part of Vyshnevolotsky District, the southern part of Firovsky District, and the northwestern part of Kuvshinovsky District, as well as minor areas in the east of Ostashkovsky District. Historically, the Tsna was one of the most important waterways in medieval Russia, providing a connection from the Baltic Sea basin into the Caspian Sea basin via the

. In the beginning of the 18th century the portage located in Vyshny Volochyok was replaced by a system of canals,

Vyshny Volochyok Waterway Vyshny Volochyok Waterway (russian: Вышневолоцкая водная система) is a waterway connecting the basins of the Baltic and Caspian Seas, or, more specifically, the Msta River and the Tvertsa River, around the town of Vyshny ...

References

{{DEFAULTSORT:Tsna River (Tver Oblast) Rivers of Tver Oblast