Ivankovo Reservoir or Ivankovskoye Reservoir (russian: link=no, Иваньковское водохранилище), informally known as the Moscow Sea, is the uppermost

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contr ...

on the

Volga The Volga (; russian: Во́лга, a=Ru-Волга.ogg, p=ˈvoɫɡə) is the longest river in Europe. Situated in Russia, it flows through Central Russia to Southern Russia and into the Caspian Sea. The Volga has a length of , and a catch ...

, in

Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...

and

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 Mi ...

s of Russia, located some north of Moscow. The dam of the reservoir is situated in the town of

Dubna Dubna ( rus, Дубна́, p=dʊbˈna) is a town in Moscow Oblast, Russia. It has a status of ''naukograd'' (i.e. town of science), being home to the Joint Institute for Nuclear Research, an international nuclear physics research center and one o ...

. The town 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 found ...

is located on its southern coast. The reservoir is connected to the Moskva by the

Moscow Canal The Moscow Canal (russian: Кана́л и́мени Москвы́), named the Moskva–Volga Canal until 1947, is a canal in Russia that connects the Moskva River with the Volga River. It is located in Moscow itself and in the Mosc ...

, and is the principal fresh water source for the city of Moscow. Its area is , and the area of its

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, ...

is . Ivankovo reservoir is covered by ice between mid-November and mid-April. The water level fluctuates during the year: It dramatically increases after the ice melting, and then stabilizes until January. The reservoir includes the lower course of the Shosha, its right tributary, the

Lama Lama (; "chief") is a title for a teacher of the Dharma in Tibetan Buddhism. The name is similar to the Sanskrit term ''guru'', meaning "heavy one", endowed with qualities the student will eventually embody. The Tibetan word "lama" means "hig ...

, and the Soz. It is subdivided into three bays (''plyoses''): The Ivankovo Bay, in the northeast, downstream of the mouth of the Shosha; the Volga Bay, in the northwest, along the Volga upstream of the mouth of the Shosha, and the Shosha Bay, in the west, along the lower course of the Shosha. The drainage basin of the Ivankovo Reservoir (which includes the basin of the upper course of the Volga) is the whole central part of Tver Oblast, the northwestern part of Moscow Oblast, and some areas in the northeastern part of

Smolensk Oblast Smolensk Oblast (russian: Смоле́нская о́бласть, ''Smolenskaya oblast''; informal name — ''Smolenschina'' (russian: Смоле́нщина)) is a federal subject of Russia (an oblast). Its administrative centre is the city o ...

and in the southwest of

Novgorod Oblast Novgorod Oblast (russian: Новгоро́дская о́бласть, ''Novgorodskaya oblast'') is a federal subject of Russia (an oblast). Its administrative center is the city of Veliky Novgorod. Some of the oldest Russian cities, includin ...

. In particular, it includes the cities and towns of

Kuvshinovo Kuvshinovo (russian: Кувшиново) is the name of several inhabited localities in Russia. ;Urban localities *Kuvshinovo, Kuvshinovsky District, Tver Oblast, a town of district significance in Kuvshinovsky District Kuvshinovsky District (ru ...

Likhoslavl Likhoslavl (russian: Лихосла́вль) is a town and the administrative center of Likhoslavlsky District in Tver Oblast, Russia, located on the Moscow–St. Petersburg Railway, northwest of Tver, the administrative center of the obl ...

Ostashkov Ostashkov (russian: Оста́шков) is a town and the administrative center of Ostashkovsky District in Tver Oblast, Russia, on a peninsula at the southern shore of Lake Seliger, west of Tver, the administrative center of the oblast. Populat ...

Rzhev Rzhev ( rus, Ржев, p=ˈrʐɛf) is a town in Tver Oblast, Russia, located southwest of Staritsa and from Tver, on the highway and railway connecting Moscow and Riga. It is the uppermost town situated on the Volga River. Population: Histo ...

, Staritsa,

Tver Tver ( rus, Тверь, p=tvʲerʲ) is a city and the administrative centre of Tver Oblast, Russia. It is northwest of Moscow. Population: Tver was formerly the capital of a powerful medieval state and a model provincial town in the Russi ...

Torzhok Torzhok (russian: Торжо́к) is a town in Tver Oblast, Russia, located on the Tvertsa River along the federal highway M10 and a branch of the Oktyabrskaya Railway division of the Russian Railways. The town is famous for its folk craft of ...

Volokolamsk Volokolamsk (russian: Волокола́мск) is a town and the administrative center of Volokolamsky District in Moscow Oblast, Russia, located on the Gorodenka River, not far from its confluence with the Lama River, northwest of Moscow. Po ...

, and

Zubtsov Zubtsov (russian: Зубцо́в) is a town and the administrative center of Zubtsovsky District in Tver Oblast, Russia, located at the confluence of the Volga and Vazuza Rivers, south of Tver, the administrative center of the oblast. Populati ...

. The reservoir was built in conjunction with the Moscow Canal, and the northern gate of the canal is located at the east of the reservoir. The construction of the dam started in January 1934, the dam was completed in 1936, and the reservoir was filled starting from March 23, 1937. On April 17, 1937 the canal was open for traffic. A historic town of

Korcheva Korcheva () was a town in central Russia, on the territory of the modern Konakovsky District, Tver Oblast, on the Volga River, with a population of a few thousand people. It was first mentioned in the 1540s as a selo. Korcheva received town stat ...

and a number of villages were submerged as the reservoir was filled. The population was resettled, and some of the buildings were moved from Korcheva to Konakovo. In total, the area of went under water.

References

{{Authority control Reservoirs built in the Soviet Union Reservoirs in Russia Reservoirs in Moscow Oblast Reservoirs in Tver Oblast RIvankovo