Irtysh

The Irtysh is the great western tributary of the Ob, flowing from the Altai across Kazakhstan and the West Siberian Plain. Its lower course winds through forest and wetland before joining the Ob. The river drains an immense basin that includes the Tobol and Ishim, as well as the Konda in the northern forests. Long winter ice and the spring rise of its waters mark the rhythm of this broad Siberian river.

The later city of Khanty-Mansiysk lies here.