|Mouth||Arurine Bay, between Port Denison and Dongara|
|Length||140 kilometres (87 mi) |
|Source elevation||326 metres (1,070 ft)|
|Mouth elevation||Sea level|
|Basin area||6,071 square kilometres (2,344 sq mi)|
The Irwin River is a river in the Mid West of Western Australia. It was named on 9 April 1839 by the explorer George Grey, while on his second disastrous exploration expedition along the Western Australian coast, after his friend Major Frederick Irwin, the Commandant of the Swan River settlement, and later acting Governor of Western Australia from 1847 to 1848.
The river has four tributaries: Lockier River, Sand Plain Creek, Nangetty Creek and Mullewa Creek.
The river occasionally floods as it did in 1945 following a severe storm that swept over the area. The river broke its banks and caused extensive damage including the loss of 450 sheep that were swept away from a farm that straddled the river.
- Western Australian Land Information Authority. "History of river names – I". Retrieved 7 September 2011.
- "Bonzle Digital Atlas – Map of Irwin River, Western Australia". 2008. Retrieved 25 November 2008.
- "Where the River meets the Sea – Estuaries of the Northern Agricultural Region" (PDF). 2005. Retrieved 17 October 2008.[dead link]
- Grey, George (1841). Journals of two expeditions of discovery in North-West and Western Australia, during the years 1837, 38, and 39, describing many newly discovered, important, and fertile districts, with observations on the moral and physical condition of the aboriginal inhabitants, etc. etc. 2. London: T. and W. Boone. p. 39. Retrieved 17 March 2012.
- "Loss of 450 sheep.". The West Australian (Perth: National Library of Australia). 20 June 1945. p. 6. Retrieved 15 September 2013.
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