Irtysh

Irtysh
Irtysh watershed
Location
CountryMongolia, China, Kazakhstan, Russia
CitiesOskemen, Semey, Pavlodar, Omsk, Tobolsk, Khanty-Mansiysk
Physical characteristics
SourceAltai Mountains
 • locationAltay Prefecture, China
 • coordinates47°52′39″N 89°58′12″E / 47.87750°N 89.97000°E / 47.87750; 89.97000
 • elevation2,960 m (9,710 ft)
MouthOb
 • location
Khanty-Mansiysk, Russia
 • coordinates
61°04′52″N 68°49′49″E / 61.08111°N 68.83028°E / 61.08111; 68.83028
 • elevation
20 m (66 ft)
Length4,248 km (2,640 mi)
Basin size1,643,000 km2 (634,000 sq mi)
Discharge 
 • average2,150 m3/s (76,000 cu ft/s) (near Tobolsk)
Basin features
ProgressionObKara Sea

The Irtysh [note 1] is a river in Russia, China, and Kazakhstan. It is the chief tributary of the Ob and is also the longest tributary river in the world.

The river's source lies in the Mongolian Altai in Dzungaria (the northern part of Xinjiang, China) close to the border with Mongolia.

The Irtysh's main tributaries include the Tobol, Demyanka and the Ishim. The Ob-Irtysh system forms a major drainage basin in Asia, encompassing most of Western Siberia and the Altai Mountains.

  1. ^ [1] Bitig Kz: ´“Name of the “Irtysh” river.´, 20 September 2020
  2. ^ The Secret History of the Mongols


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