|Name origin: After Peter Mcintyre, a pastoralist|
|States||New South Wales, Queensland|
|Region||IBRA: New England Tablelands|
|Districts||Northern Tablelands, Darling Downs, North West Slopes|
|Municipalities||Inverell, Glen Innes Severn, Goondiwindi, Moree Plains|
|Part of||Barwon River, Murray–Darling basin|
|- right||Severn River (New South Wales), Dumaresq River|
|Source||Great Dividing Range|
|- location||near Glencoe, New South Wales|
|- elevation||1,260 m (4,134 ft)|
|Mouth||confluence with the Weir River to form the Barwon River|
|- location||west of Goondiwindi, Queensland|
|- elevation||224 m (735 ft)|
|Length||319 km (198 mi)|
|Basin||49,470 km2 (19,100 sq mi)|
Macintyre River, a perennial river that is part of the Barwon catchment of the Murray-Darling basin, is located in the Northern Tablelands and North West Slopes districts of New South Wales, and the Southern Downs district of Queensland, Australia.
Part of the course of the river marks the boundary between Queensland and New South Wales.
The Macintyre River rises on the western slopes of the Great Dividing Range, west of Guyra and south of Glen Innes, and flows generally northwest and west, joined by twenty-two tributaries, including the Severn River (New South Wales) and Dumaresq River, before reaching its confluence with the Weir River to form the Barwon River, west of Goondiwindi. The Macintyre River descends 1,040 metres (3,410 ft) over its 319 kilometres (198 mi) course; passing near the towns of Glen Innes, Inverell, Ashford, Yetman, and Boggabilla. The flow of the river is impounded by Boggabilla Weir.
The Macintyre River, together with Pike Creek, the Mole, Beardy, Severn (Queensland), Severn (New South Wales), and Dumaresq rivers are all part of the Border Rivers group. Originally named the Dumaresq River by Allan Cunningham. The name Macintyre was given by Cunningham to what is now known as the Dumaresq River. Peter Macintyre was the overseer at Segenhoe Station.
The Macintyre River is often affected by floods and the town of Goondiwindi is protected by levee banks that can cope with a water level rise of nearly 11 metres (36 ft). During the 2010–2011 Queensland floods the river peaked at 10.64 metres (34.9 ft).
Previous peaks have occurred during 1996, at 10.6 metres (35 ft) and during 1976.
- "Macintyre River". Geographical Names Register (GNR) of NSW. Geographical Names Board of New South Wales. Retrieved 5 February 2013.
- "Macintyre River". Place name details. Queensland Government. 30 May 1981. Retrieved 5 February 2013.
- "Map of Macintyre River". Bonzle.com. Retrieved 5 February 2013.
- "Goondiwindi on edge as river nears peak". ABC News (Australia). 14 January 2011. Retrieved 5 February 2013.
- "Flood threat eases at Goondiwindi". ABC Southern Queensland (Australia). 16 January 2011. Retrieved 5 February 2013.
- "Flood warning for the Weir and Macintyre Rivers". Bureau of Meteorology, Brisbane. Goondiwindi Regional Council. 13 January 2011. Retrieved 5 February 2013.
Media related to Macintyre River at Wikimedia Commons
- "Border Rivers catchment" (map). Office of Environment and Heritage. Government of New South Wales.
- Border Rivers Daily Report - website
- Border Rivers-Gwydir Catchment Management Authority - website