[1] Its headwaters are at the Obshchy Syrt adjoining the Ural River basin.

It flows west and joins the Volga south of Samara.

Irgiz's meandering riverbed passes the steppes.

The river flows to the Volgograd Reservoir of the Volga downstream Balakovo, near Volsk.

This article related to a river in Southern Russia is a stub.