The Demyanka (russian: Демьянка) 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 the

Omsk Oblast Omsk Oblast (russian: О́мская о́бласть, ''Omskaya oblast'') is a federal subject of Russia (an oblast), located in southwestern Siberia. The oblast has an area of . Its population is 1,977,665 ( 2010 Census) with the majority, 1.12 ...

and

Tyumen Oblast Tyumen Oblast (russian: Тюме́нская о́бласть, ''Tyumenskaya oblast'') is a federal subject (an oblast) of Russia. It is geographically located in the Western Siberia region of Siberia, and is administratively part of the Urals ...

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 is a right tributary of the

Irtysh The Irtysh ( otk, 𐰼𐱅𐰾:𐰇𐰏𐰕𐰏, Ertis ügüzüg, mn, Эрчис мөрөн, ''Erchis mörön'', "erchleh", "twirl"; russian: Иртыш; kk, Ертіс, Ertis, ; Chinese: 额尔齐斯河, pinyin: ''É'ěrqísī hé'', Xiao'erj ...

. The river's source lies in the

Vasyugan Swamp The Vasyugan Swamp () is the largest swamp in the northern hemisphere as well as the largest peatland in the world. It is located in Russia, in southwestern Siberia. The swamp is a major reservoir of fresh water for the region, and the Vasyuga ...

.Демьянка

Great Soviet Encyclopedia The ''Great Soviet Encyclopedia'' (GSE; ) is one of the largest Russian-language encyclopedias, published in the Soviet Union from 1926 to 1990. After 2002, the encyclopedia's data was partially included into the later ''Bolshaya rossiyskaya e ...

It is long, and has a drainage basin of . The

river bed A stream bed or streambed is the bottom of a stream or river (bathymetry) or the physical confine of the normal water flow ( channel). The lateral confines or channel margins are known as the stream banks or river banks, during all but flood ...

is unbranched, strongly meandering. The bottom of the river bed is either ooze or sandy. During the spring rise of the water level, the river partially becomes navigable. The riverbed in shallow water is cluttered with fallen trees and bushes. The sloping longitudinal slope is insignificant - 0.034 ‰. Ice drifting takes place on the rise of high water. The Demyanka basin is significantly swampy: 50% of it is covered by marshes, 45% by forest. Small lakes are numerous, but their surface area does not exceed 2.0%. On the river there is the settlement of

Demyanka The Demyanka (russian: Демьянка) is a river in the Omsk Oblast and Tyumen Oblast, Russia. It is a right tributary of the Irtysh. The river's source lies in the Vasyugan Swamp.

, but on the whole the Demyanka basin is sparsely populated. There are no large settlements.

References

{{Reflist Rivers of Omsk Oblast Rivers of Tyumen Oblast