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Arpa Valley

Valley in Kyrgyzstan

Summary

Valley in Kyrgyzstan

Field	Value
name	Arpa Valley
map	Kyrgyzstan
location	Kyrgyzstan, Naryn Region
coordinates
elevation_m	2600-3600
length	60 km NW-SE
width	32 km SW-NE
watercourses	Arpa

The Arpa Valley () is a high-altitude valley in the southwestern part of the inner Tien Shan. It is bordered by the Fergana Range to the southwest, the Torugart Range to the south, the At-Bashy Range to the east, Ortok Too to the northeast, and Jaman-Too to the north. The valley is approximately 60 km long and up to 32 km wide at its broadest point. Its elevation ranges between 2600 m and 3600 m above sea level.

Hydrology

The valley is drained by the Arpa River, a tributary of the Ala-Buga. It divides the valley into two parts — a gently sloping wide left bank and a steeper, narrower right bank.

Geology

The Arpa Valley is a graben-synclinal depression. Its floor is filled with thick layers of alluvial and weathered rocks.

Landscapes

The Arpa Valley is characterized by the following landscape zones:

Meadow and shrubby steppe (up to 3,000 m),
On the south-facing slopes: subalpine semi-desert and dry steppe (up to 3,500 m),
Alpine steppe,
On the north-facing slopes: subalpine steppe and meadow steppe,
Subnival zone (up to 3,800 m),
And above that — glacial-nival landscapes.

Climate

The climate is harsh: the average annual temperature is −5.4 °C, with January averaging −23 °C and July 9.3 °C. Annual precipitation ranges between 250 and 280 mm.

Roads

The highway of international significance, ЭМ-11, as designated by the national road classification, connects Bishkek, Torugart, and the Kyrgyzstan-China border. The road passes through the eastern part of the Arpa Valley and is part of the European route E125 and Asian Highway 61 network in Kyrgyzstan.

"From the top of the Sur-tash pass, on the Ferghana range, a most instructive view was obtained over the plateau world to the east. Below was the Arpa "Pamir," a broad, undulating, grassy valley, with the Arpa river flowing through its centre. The Jaman Davan range, which borders the Arpa plateau on the north-east, on the north closes in and joins with the Ferghana range, thus enclosing the plateau. The Arpa river cuts through this range by a deep-cut gorge, the course of which is still dotted on the map, by an imaginary line."

Footnotes

References

Douglas Carruthers "Notes on the Journey to the Arpa and Ak-Sai Plateaus in Russian Turkestan." The Geographical Journal, Vol. 36, No. 5 (Nov., 1910), pp. 563-570.

References

(2004). "Арпа өрөөнү". Кыргызстан.
(2004). "Арпа". Кыргызстан.
(18 August 2017). "Order of classification and numeration of public roads in the Kyrgyz Republic".
Carruthers (1910), p. 565.

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

valleys-of-kyrgyzstan naryn-region

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