The Coliban River, an inland perennial river of the north–central catchment, part of the Murray-Darling basin, is located in the lower Riverina bioregion and Central Highlands region of the Australian state of Victoria. The headwaters of the Coliban River rise on the northern slopes of the Great Dividing Range and descend to flow north into the Campaspe River with the impounded Lake Eppalock. The river is a major water supply source for towns and cities in the lower Central Highlands region.