The Demyanka () is a

river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

in the

Omsk Oblast Omsk Oblast () is a federal subjects of Russia, federal subject of Russia (an oblast), located in southwestern Siberia. The oblast has an area of . Its population is 1,977,665 (Russian Census (2010), 2010 Census) with the majority, 1.12 million, ...

and

Tyumen Oblast Tyumen Oblast () is a federal subjects of Russia, federal subject (an oblast) of Russia. It is located in Western Siberia, and is administratively part of the Ural Federal District. The oblast has administrative jurisdiction over two autonomous ...

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 ...

. It is a right tributary of the

Irtysh The Irtysh is a river in Russia, China, and Kazakhstan. It is the chief tributary of the Ob (river), Ob and is also the longest tributary in the world. The river's source lies in the Altai Mountains, Mongolian Altai in Dzungaria (the northern p ...

. The river's source lies in the Vasyugan Swamp.Демьянка

Great Soviet Encyclopedia The ''Great Soviet Encyclopedia'' (GSE; , ''BSE'') 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 ''Great Russian Enc ...

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

river bed A streambed or stream bed is the bottom of a stream or river and is confined within a channel or the banks of the waterway. Usually, the bed does not contain terrestrial (land) vegetation and instead supports different types of aquatic vegeta ...

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, 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