Major Tributaries

Fairly minor tributary but this often floods when there is high rainfall around Toowoomba.

From its source in Carnarvon National Park, the Maranoa River flows south past Mitchell into Lake Kajarabie where it joins the Balonne River.

The Barwon starts at the confluences of the Weir River into the Macintyre River. Likewise, the Darling forms at the Culgoa River confluence with the Barwon.

Another river originating in the Carnarvon Range.

The Bogan actually joins the Barwon just a few kilometres upstream of the Culgoa and Barwon confluence that marks the start of the Darling River.

Last of the major tributaries that feed the Darling.

Moonie (Mooni) River basin is relatively flat and lacks any significant features of note.

The Weir, Macintyre, Dumaresq, Severn are collectively known as the Border Rivers.

Part of the river course marks the boundary between QLD and NSW.

The confluence with the Weir River forms the Barwon River.

The Gwydir River has an undefined path through the wetlands and floodplains west of Moree and it rarely reaches the Barwon outside of flood events. Some of its waters reach the Barwon via the Mehi River.

The Namoi River flows from western slopes of the Moonbi Range at the convergence of the Macdonald River and Boundary Creek and is joined by twenty-seven named tributaries on its way to the Barwon.

The Castlereagh, Macquarie and Bogan rivers run "more or less parallel" across the rich soils of the alluvial plains.

Macquarie River is the ninth or tenth longest river in the country at about 882 km. High flows often get absorbed by the Macquarie Marshes just before the river meets the Barwon.