The Adycha (russian: Адыча; sah, Адыаччы) is a river in the Republic of

Sakha Sakha, officially the Republic of Sakha (Yakutia),, is the largest republic of Russia, located in the Russian Far East, along the Arctic Ocean, with a population of roughly 1 million. Sakha comprises half of the area of its governing Far Eas ...

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 hand tributary of the

Yana Yana may refer to: Locations *Yana, Burma, a village in Hkamti Township in Hkamti District in the Sagaing Region of northwestern Burma *Yana, India, a village in the Uttara Kannada district of Karnataka, India * Yana, Nigeria, an administrative ca ...

, and is long, with a

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, t ...

of . At the end of the

Soviet period The history of Soviet Russia and the Soviet Union (USSR) reflects a period of change for both Russia and the world. Though the terms "Soviet Russia" and "Soviet Union" often are synonymous in everyday speech (either acknowledging the dominance ...

, a big dam with a hydroelectric station was planned to be built on the river, but following

perestroika ''Perestroika'' (; russian: links=no, перестройка, p=pʲɪrʲɪˈstrojkə, a=ru-perestroika.ogg) was a political movement for reform within the Communist Party of the Soviet Union (CPSU) during the late 1980s widely associated wit ...

and economic difficulties in the country the project was given up.

Course

The river begins in the western flank of the

Chersky Range The Chersky Range (, ) is a chain of mountains in northeastern Siberia between the Yana River and the Indigirka River. Administratively the area of the range belongs to the Sakha Republic, although a small section in the east is within Magadan O ...

at an elevation of . It heads roughly north and northwest across a wide river valley where

taiga Taiga (; rus, тайга́, p=tɐjˈɡa; relates to Mongolic and Turkic languages), generally referred to in North America as a boreal forest or snow forest, is a biome characterized by coniferous forests consisting mostly of pines, spruce ...

and

forest tundra A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...

predominate, bending around the northern end of the

Tirekhtyakh Range The Tirekhtyakh Range ( rus, Тирехтяхский хребет; sah, Тирэхтээх) is a mountain range in the Sakha Republic (Yakutia), Far Eastern Federal District, Russia. The nearest city is Batagay to the north of the range. The cl ...

. Finally, after flowing across the western end of the

Kisilyakh Range The Kisilyakh Range ( rus, Кисиляхский хребет; sah, Киһилээх) is a mountain range in the Sakha Republic, Far Eastern Federal District, Russia. The nearest city is Batagay, and the nearest airport Batagay Airport. The mo ...

, it joins river Yana from the right about to the north of

Batagay Batagay (russian: Батага́й; sah, Баатаҕай, ''Baatağay'') is an urban locality (an urban-type settlement) and the administrative center of Verkhoyansky District of the Sakha Republic, Russia, located on the Yana River. As of the ...

and roughly to the south of the confluence with the

Oldzho The Oldzho ( rus, Ольджо; sah, Олдьо), also known as Oldyo (Ольдё) or Olduo (Олдьуо), is a river in the Verkhoyansk District, Sakha Republic, Russia. It is a right tributary of the Yana. The length of the river is and t ...

. The river is also known as "Borong" (Russian: Боронг) in a section of its upper course.Adycha — ''статья из Большой советской энциклопедии''.

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 ...

River Adycha freezes in October and is under thick ice until the end of May. For about 4½ months it is frozen to the bottom. Part of the river is navigable after the thaw.

Tributaries

The main tributaries of the Adycha are Delakag (Делакаг),

Charky The Charky (russian: Чаркы; sah, Чаркы), also known as Muolakaan (Муолакаан), is a river in the Republic of Sakha in Russia. It is a right hand tributary of the Adycha, of the Yana basin. It is long, with a drainage basin of ...

(Чаркы) and

Tuostakh , name_native = , name_native_lang = Yakut , image = Kisilyakh Mountains - ONC C-6.jpg , image_size = , image_caption = Map section showing part of the course of the Tuostakh in the lower center , ...

(Туостах) on the right; and

Derbeke The Derbeke ( rus, Дербеке; sah, Дэрбэкэ) is a river in the Republic of Sakha in Russia. It is a left hand tributary of the Adycha, of the Yana basin. It is long, with a drainage basin of . It is an excellent river for boating, ...

(Дербеке),

Nelgese The Nelgese ( rus, Нельгесе; sah, Нэльгэһэ, ''Nelgehe'') is a river in the Republic of Sakha in Russia. It is a left hand tributary of the Adycha, of the Yana basin. It is long, with a drainage basin of . The river flows across ...

(Нельгесе) and

Borulakh The Borulakh ( rus, Борулах; sah, Боруулаах, ''Boruulaax'') is a river in the Republic of Sakha in Russia. It is a left hand tributary of the Adycha, of the Yana basin. It is long, with a drainage basin of . The river is not na ...

(Борулах) on the left.

References

Rivers of the Sakha Republic {{Russia-river-stub

Course

Tributaries

See also

References