The Ulakhan-Vava (; ) is a river in

Yakutia Sakha, officially the Republic of Sakha (Yakutia), is a republics of Russia, republic of Russia, and the largest federal subject of Russia by area. It is located in the Russian Far East, along the Arctic Ocean, with a population of one million ...

(

Sakha Republic Sakha, officially the Republic of Sakha (Yakutia), is a republics of Russia, republic of Russia, and the largest federal subject of Russia by area. It is located in the Russian Far East, along the Arctic Ocean, with a population of one million ...

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. It is a left hand tributary of the

Vilyuy The Vilyuy ( rus, Вилю́й, p=vʲɪˈlʲʉj; , ''Bülüü'', ) is a river in Russia, the longest tributary of the Lena (river), Lena. About long, it flows mostly within the Sakha Republic. Its basin covers about . History The river is first ...

, and is long, with a

drainage basin A drainage basin is an area of land in which 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, ...

of . The river flows across Mirninsky District; there are no permanent settlements in the area. The nearest inhabited place is Ekonda, located about to the NNW of the river source.

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Course

The Ulakhan-Vava belongs to the upper section of the Vilyuy basin. Its sources are in an elevated part of the

Vilyuy Plateau The Vilyuy Plateau () is a mountain plateau in Krasnoyarsk Krai and the Sakha Republic (Yakutia), Siberia, Russia. It is a part of the Central Siberian Plateau and it is made up mainly of the upper course section of the Vilyuy River. Permafrost ...

, near the

Krasnoyarsk Krai Krasnoyarsk Krai (, ) is a federal subjects of Russia, federal subject (a krai) of Russia located in Siberia. Its administrative center is the types of inhabited localities in Russia, city of Krasnoyarsk, the second-largest city in Siberia after ...

border. It heads roughly southeastwards in its upper course and bends to the northeast in its middle reaches and heads roughly eastwards

meandering A meander is one of a series of regular sinuous curves in the channel of a river or other watercourse. It is produced as a watercourse erodes the sediments of an outer, concave bank ( cut bank or river cliff) and deposits sediments on an inn ...

in the

floodplain A floodplain or flood plain or bottomlands is an area of land adjacent to a river. Floodplains stretch from the banks of a river channel to the base of the enclosing valley, and experience flooding during periods of high Discharge (hydrolog ...

. Finally, shortly before its mouth it bends sharply northeastwards and meets the right bank of the Vilyuy from its mouth in the Lena. The confluence is almost opposite the mouth of the Sen in the facing bank.Улахан-Вава
— ''

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'' in 30 vols. / Ch. ed.

A.M. Prokhorov Alexander Mikhailovich Prokhorov (born Alexander Michael Prochoroff, ; 11 July 1916 – 8 January 2002) was an Australian-born Russian physicist and researcher on lasers and masers, in the former Soviet Union. He shared the Nobel Prize in Ph ...

- 3rd ed. - M. Soviet Encyclopedia, 1969-1978 The main tributaries of the Ulakhan-Vava are the long Khaim (Хайм), the long Sengachanda, the long Mayykta-Seene (Майыкта-Сээнэ) and the long Kyuryungnekan (Кюрюнгнэкээн) from the right; and the long Umotka and the long Vava from the left. The river is fed by snow and rain. It freezes in October and stays under ice until early June.Nature.ykt
/ref>

References

{{Reflist

External links

Кроншнеп-малютка Numenius minutus в центральной части Вилюйского плато
Rivers of the Sakha Republic

Course

See also

References

External links