Macintyre River

The Macintyre River is a river in northern New South Wales, Australia, part of which forms the border with Queensland.

The headwaters of the Macintyre River rise west of Guyra and south of Glen Innes on the Northern Tablelands. The river flows generally northwest, passing near the towns of Glen Innes, Inverell, Ashford and Yetman.

A few kilometres east of Boggabilla, the Macintyre converges with the Dumaresq River, which forms the border between the states of New South Wales and Queensland. The combined river, called the Macintyre, flows westward between Boggabilla and Goondiwindi, Queensland, forming the border between the states. Further west, the Macintyre turns to the south-west and eventually becomes the Barwon River. It is one of the headwaters of the Murray-Darling river system.

Tributaries of the Macintyre River include the Swanbrook Creek, which joins at Inverell, the Severn River (New South Wales) which joins near Ashford, and the Dumaresq River which joins near Boggabilla. The Dumaresq River, in turn, has tributaries from the Mole River, Weir River, Macintyre Brook, and the Severn River (Queensland).

This group of river is called the "Border Rivers" and is considered to be the headwaters of the Darling River (although the Condamine River is longer ). Pindari Dam is located on the Severn River (New South Wales) just upstream from where it joins the Macintyre River.

The Macintyre River is often affected by floods and the town of Goondiwindi, Queensland is protected by levy banks which can cope with a nearly 11m rise in the water level as happened with the 2010–2011 Queensland floods.