The Balonne River, part of the Murray-Darling Basin system, is a short yet significant part of the inland river group of South West Queensland, Australia.
The river is a continuation of the Condamine River. After flowing through Surat the river flows south south-westerly down through the E.J. Beardmore Dam (Lake Kajarabie). Passing through St George it continues in the same south-west direction, until about 20 kilometres north of Dirranbandi, where it branches, with the western branch then being called the Culgoa River. The eastern branch continues on as the Balonne River through Dirranbandi. Shortly after flowing through Dirranbandi, the Balonne River again branches into the Bokhara River on the west side (the right side when going down stream) and the Narran River on the eastern (left) side. The Narran River flows into Narran Wetlands. The Bokhara River joins with the Barwon River west of Brewarrina. The confluence of the Culgoa River (a western branch of the Balonne River) and the Barwon River (which includes a former central branch of the Balonne) forms the start of the Darling River.
It is 479 km in length.
