Atrek
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The Atrek ( fa, اترک, ku, Etrek, tk, Etrek derýasy), also known as the Attruck, Atrak, and Etrek, is a fast-moving
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 ...
which begins in the mountains of north-eastern
Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...
(), and flows westward draining into the south-eastern corner of the
Caspian Sea The Caspian Sea is the world's largest inland body of water, often described as the world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad steppe of Central Asia ...
in
Turkmenistan Turkmenistan ( or ; tk, Türkmenistan / Түркменистан, ) is a country located in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north, east and northeast, Afghanistan to the southeast, Iran to the sout ...
. Because of the high use of its waters for irrigation, it only flows into the Caspian when it is in flood stage.


Geography

The Atrek is long and drains a basin of .


Politics

Beginning at , where its tributary the Sumbar joins it, the river forms the border of Iran with
Turkmenistan Turkmenistan ( or ; tk, Türkmenistan / Түркменистан, ) is a country located in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north, east and northeast, Afghanistan to the southeast, Iran to the sout ...
; this helped keep the area closed throughout the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because the ...
years. A 1957 treaty between
Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...
and the USSR assigns equal rights to 50% of the water of the frontier parts of the Atrek. The same treaty also applies to the
Aras River , az, Araz, fa, ارس, tr, Aras The Aras (also known as the Araks, Arax, Araxes, or Araz) is a river in the Caucasus. It rises in eastern Turkey and flows along the borders between Turkey and Armenia, between Turkey and the Nakhchivan excl ...
, which now forms part of the border between Iran and
Azerbaijan Azerbaijan (, ; az, Azərbaycan ), officially the Republic of Azerbaijan, , also sometimes officially called the Azerbaijan Republic is a transcontinental country located at the boundary of Eastern Europe and Western Asia. It is a part of th ...
.


Ecology

Even though
sturgeon Sturgeon is the common name for the 27 species of fish belonging to the family Acipenseridae. The earliest sturgeon fossils date to the Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretace ...
s concentrate in the area of the Caspian Sea next to the Turkmen coast, they do not currently migrate into the Atrek River owing to its low water level and pollution. Since the Atrek is the only Caspian watershed river of the Turkmen coast, sturgeons no longer reproduce in Turkmenistan.Sturgeons in Turkmenistan


See also

*
Chandyr River The Chandyr River is a tributary of the Atrek River in Turkmenistan Turkmenistan ( or ; tk, Türkmenistan / Түркменистан, ) is a country located in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the nort ...


References

{{Rivers of Turkmenistan Rivers of North Khorasan Province Rivers of Turkmenistan International rivers of Asia Iran–Turkmenistan border Landforms of Golestan Province Border rivers Landforms of North Khorasan Province Tributaries of the Caspian Sea