The Wilge River has its origin about 15 km WNW of Leandra, in the highveld grasslands between this town and Springs, Gauteng.

[2] It flows roughly northwards until it is joined by its main tributary, the Bronkhorstspruit, that joins its left bank about 25 km downstream of Bronkhorstspruit town.

Then it flows in a northeastern direction until it joins the Olifants about 12 km upstream from the head of the Loskop Dam reservoir.

[3] Other tributaries of the Wilge are the Kendal and the Devon River.

This article related to a river in South Africa is a stub.