The Bogan River at Nyngan
|Etymology||1. Aboriginal: the birthplace of a notable headman of the local tribe;|
2. Gaelic: bog
|State||New South Wales|
|Region||Central West, Orana|
|Source||Little River (Parkes)|
|⁃ location||Cooks Myalls, near Parkes|
|⁃ coordinates||33°00′30″S 148°02′00″E|
|⁃ elevation||305 m (1,001 ft)|
|Dry Bogan Weir, near Bourke|
|111 m (364 ft)|
|Length||617 km (383 mi)|
|Basin size||18,000 km2 (6,900 sq mi)|
|River system||Macquarie–Barwon sub-catchment,|
Darling River catchment,
|⁃ left||Genaren Creek, Sandy Creek, Bulbodney Creek|
|⁃ right||Cookopie Creek, Burrill Creek, Gundong Creek, Tomingley Creek, Mulla Mulla Cowal, Moonagee Cowal, Gunningbar Creek, Nyangi Bogan Cowal, Bywash Billabong, Kellys Cowal|
|Basin area is upstream of Nyngan only:11|
From the foothills of the Herveys Range, the Bogan River rises to the west of the headwaters of the Little River at Cooks Myalls, near Goonumbla, 19 kilometres (12 mi) north-west of Parkes. The river flows in a generally north-north-westerly direction past Tottenham, Peak Hill and through Nyngan. East of Bourke, the Bogan River joins with the Little Bogan River to form the Darling River. The Bogan River has over twenty tributaries. The main tributaries to the west are Bullock, Bulbodney, Pangee and Whitbarrow Creeks. The eastern catchment between the Bogan and Macquarie Rivers is ill-defined and has only one major tributary, Mulla Cowal.:11 Other sources have claimed that Bugwah Cowal, and Burrill, Duck and Gunningbar Creeks are important tributaries.
Unlike the other main rivers of inland New South Wales, the Bogan does not rise in the well-watered highland areas, so its flow is low and erratic and not much use for irrigation.
Major weirs along the watercourse are at Muddal Weir, located west of Peak Hill; the Nyngan Weir, located north of Nyngan; and Gongolgon Weir, where the mean daily flow exceeds 700 megalitres (25×106 cu ft).:16
The Kamilaroi Highway crosses the Bogan River 43 kilometres (27 mi) east of Bourke.
A number of Aboriginal peoples lived in the lands surrounding the Bogan River for many thousands of years. In the area surrounding Peak Hill, the indigenous inhabitants of the area were the Wiradjuri clan. In the area surrounding Nyngan, the Ngiyambaa Aboriginal people were the principal custodians of the land.
The river was crossed by John Oxley in 1817, but was named by Charles Sturt in his 1828-9 expedition as New Years Creek on 1 January 1829. It was also called the Bogan River prior to Major Sir Thomas Mitchell reaching here in 1835. On 17 April 1835 Richard Cunningham wandered away from the Mitchell party near the Bogan River and it is believed that he was killed here by Aborigines.
In April 1990, major flooding occurred along the river and in Nyngan, and despite a massive effort by local people to build levee walls using sandbags, 2,500 people had to be evacuated from the town. The floods caused A$50 million damage with the railway line so severely affected that rail services to Nyngan have since ceased, although freight services from Cobar are unaffected. Other significant flooding of the Bogan River occurred in 1928.
- "Bogan River". Geographical Names Register (GNR) of NSW. Geographical Names Board of New South Wales. Retrieved 21 October 2012.
- Readers Digest Guide to Australian Places. Sydney: Reader’s Digest (Australia) Pty. Limited. 1993. ISBN 978-0-86438-399-0.
- Cobb, John (3 June 2009). "On the origins of the bogan as a species". The Punch. Retrieved 13 January 2013.
- Green, D.; Petrovic, J.; Moss, P.; Burrell, M. (March 2011). Water resources and management overview: Macquarie-Bogan catchment. NSW Office of Water (PDF). Sydney: Government of New South Wales. ISBN 978-1-74263-161-5.
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- "The Flood in Bogan River". The Sydney Morning Herald. Trove: National Library of Australia. 25 February 1928. Retrieved 21 October 2012.
- Macquarie-Bogan River: NSW Water Quality and River Flow Objectives at the NSW Office of Environment and Heritage. 2006.
- Images of the Bogan River at the State Library of New South Wales.
- Muir, G. L; Johnson, W. D (1978). "Chemistry of the Bogan River, New South Wales, with Special Reference to the Sources of Dissolved Material". Australian Journal of Marine and Freshwater Research. 29 (4): 399–407. doi:10.1071/MF9780399.