The river rises at the base of Macumba Hill and where the Alberga River joins with Hamilton and Currallulla creeks, it then flows in a south easterly direction entering the
Kalamurina Sanctuary and eventually discharges into the
Warburton River near the north eastern side of
Lake Eyre. The Macumba is situated in an arid region, the
Simpson Desert and flows only very rarely. Even in years that Lake Eyre fills, such as 2010, most of the water comes from the east, the
Channel Country of
Queensland. The
Finke River normally drains into the Simpson Desert to the north west of the Macumba, but in the first decade of the 20th century it is thought that the Finke flowed directly into the Macumba. It is thought that the Finke has flowed to Lake Eyre via the Macumba in 1909, 1938, and 1945. Along with its tributaries the river has a catchment area of . The river passes through a number of permanent and semi-permanent
waterholes including Ross waterhole, Walkinna waterhole, Tidnabucca waterhole, Ullabarracoola waterhole and Christmas waterhole. Eleven
tributaries join the Macumba including the Alberga River, Stevenson Creek, Coomparana Creek, and Yardaparinna Creek. ==History==