The Burnaya (, ) is a young rapid river in Priozersky District of

Leningrad Oblast Leningrad Oblast (, ; ; ) is a federal subjects of Russia, federal subject of Russia (an oblast). The oblast has an area of and a population of 2,000,997 (2021 Russian census, 2021 Census); up from 1,716,868 recorded in the 2010 Russian census ...

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

, on the Karelian Isthmus, which emerged in 1818. It flows from Lake Sukhodolskoye to

Lake Ladoga Lake Ladoga is a freshwater lake located in the Republic of Karelia and Leningrad Oblast in northwestern Russia, in the vicinity of Saint Petersburg. It is the largest lake located entirely in Europe, the second largest lake in Russia after Lake ...

and is a part of Vuoksi River drainage basin. Before the

Winter War The Winter War was a war between the Soviet Union and Finland. It began with a Soviet invasion of Finland on 30 November 1939, three months after the outbreak of World War II, and ended three and a half months later with the Moscow Peac ...

and

Continuation War The Continuation War, also known as the Second Soviet–Finnish War, was a conflict fought by Finland and Nazi Germany against the Soviet Union during World War II. It began with a Finnish declaration of war on 25 June 1941 and ended on 19 ...

it was located in

Finland Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, ...

, known under the name Taipaleenjoki. Originally waters of Lake Suvanto (Lake Sukhodolskoye) quietly flowed into the Vuoksi through a waterway at Kiviniemi. However, in 1818 a channel that had been dug to drain spring flood waters from Suvanto into Lake Ladoga unexpectedly turned into the Taipaleenjoki, which started draining Suvanto and decreased its level by . The Kiviniemi waterway dried out. In 1857 the channel was dug there, but the stream reversed direction, revealed

rapids Rapids are sections of a river where the river bed has a relatively steep stream gradient, gradient, causing an increase in water velocity and turbulence. Flow, gradient, constriction, and obstacles are four factors that are needed for a rapid t ...

and rendered navigation at Kiviniemi impossible. Since 1857 Lake Sukhodolskoye and the Burnaya River have constituted the southern armlet of Vuoksi River, which has decreased the level of the original northern armlet flowing through Priozersk by .

References

{{Authority control Rivers of Leningrad Oblast Karelian Isthmus 0Burnaya