The Adycha (; ) is a river in the Republic of
Sakha in
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 hand tributary of the
Yana, 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 .
At the end of the
Soviet period
The history of the Soviet Union (USSR) (1922–91) began with the ideals of the Russian Bolshevik Revolution and ended in dissolution amidst economic collapse and political disintegration. Established in 1922 following the Russian Civil War, ...
, a big dam with a hydroelectric station was planned to be built on the river, but following
perestroika
''Perestroika'' ( ; rus, перестройка, r=perestrojka, p=pʲɪrʲɪˈstrojkə, a=ru-perestroika.ogg, links=no) was a political reform movement within the Communist Party of the Soviet Union (CPSU) during the late 1980s, widely associ ...
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, Yana and Indigirka River, Indigirka Rivers. Administratively, the area of the range belongs to the Sakha Republic, although a small section in the eas ...
at an elevation of . It heads first westwards and then roughly northwestwards, flanking the western side of the
Nendelgin Range across a wide river valley. After bending around the northern end of the
Tirekhtyakh Range it heads northwards and meanders strongly.
Finally, after flowing across the western end of the
Kisilyakh Range, it joins river Yana from the right about to the north of
Batagay and roughly to the south of the confluence with the
Oldzho. 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; , ''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 ...
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 (Чаркы) and Tuostakh (Туостах) on the right; and Derbeke (Дербеке), Nelgese (Нельгесе) and Borulakh (Борулах) on the left.
Flora
Taiga
Taiga or tayga ( ; , ), also known as boreal forest or snow forest, is a biome characterized by coniferous forests consisting mostly of pines, spruces, and larches. The taiga, or boreal forest, is the world's largest land biome. In North A ...
and forest tundra predominate in the valley of the river.
See also
*List of rivers of Russia
Russia can be divided into a European and an Asian part. The dividing line is generally considered to be the Ural Mountains. The European part is drained into the Arctic Ocean, Baltic Sea, Black Sea, and Caspian Sea. The Asian part is drained i ...
* Yana Plateau
* Yana-Oymyakon Highlands§Hydrography
References
{{Reflist
Rivers of the Sakha Republic