description Irtysh Overview
The Irtysh rises as the Black Irtysh in the Altai region of northwestern China, crosses Kazakhstan, and continues through Russia before joining the Ob near Khanty-Mansiysk. It is the Ob’s principal tributary and is commonly measured at about 4,248 kilometers from its upper source, making it the longest tributary in length-based geographic listings. The river system supports navigation, irrigation, hydroelectric power, and water supply across its basin.
help Irtysh FAQ
Where does the Irtysh River begin?
The river begins as the Black Irtysh in the Altai region of northwestern China. From there, it continues west into Kazakhstan.
Which countries does the Irtysh cross?
The Irtysh passes through China, Kazakhstan, and Russia. It eventually joins the Ob near Khanty-Mansiysk.
How is the Irtysh related to the Ob River?
The Irtysh is the principal tributary of the Ob. Their confluence is near Khanty-Mansiysk in western Siberia.
How long is the Irtysh River?
The Irtysh is commonly measured at about 4,248 kilometers from its upper source. That measurement includes the Black Irtysh headwater in China.
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