It rises on the southwestern slopes of Mount Gurage near 6°2′N 38°7′E / 6.033°N 38.117°E / 6.033; 38.117, flowing south along the western side of the Great Rift Valley, to empty into Lake Abaya at 6°37′54″N 37°59′6″E / 6.63167°N 37.98500°E / 6.63167; 37.98500.

It is the longest river flowing into Lake Abaya and also the one with the highest discharge.

The 250 km long river is not navigable and has no notable tributaries.

[2] David Buxton recorded its importance as defining the boundary between the Sidamo district on the eastern side, and the Wolaita district on the western; he also described finding a weekly market beside a ford named Dimtu.

This article related to a river in Ethiopia is a stub.