Deep River (Western Australia)
Fernhook Falls on the Deep River
|Main source||Lake Muir
183 metres (600 ft)
|River mouth||Nornalup Inlet|
|Basin size||100 km2 (39 sq mi)|
|Length||120 kilometres (75 mi)|
The river is under tidal influence for the last 6 kilometres (4 mi) of its length.
Although generally shallow the Deep River has depths of up to 6.5 metres (21 ft) in places. The Deep River is one of the few perennial rivers in Western Australia although 80% of its discharge occurs in winter and spring.
The rivers water quality is very good, fresh and low in nutrients. The majority of the catchment of the Deep River is not cleared. The silt and clay content can be high during the winter period. The Deep River begins just west of Lake Muir about 50 km from the coast on the edge of the Yilgarn Plateau. It flows through a valley between granite hills then wanders across the coastal plain finally entering the Nornalup Inlet on the western side.
Some features of the river include wide unobstructed pools interspersed with rapids such as Rowell’s Pool and two waterfalls, Fernhook Falls and Gladstone Falls.
Originally sighted in 1831 by Captaian Thomas Bannister, he river was not named until 1841 by the Colonial Secretary, Peter Brown. It had been known as the Frankland River by sealers that operated in the area. The explorer W.N. Clark named it West River on his charts but Brown later decided on the current name.
- "Bonzle Digital Atlas - Map of Deep River, WA". 2008. Retrieved 23 November 2008.
- "Walpole Nornalup Indicative Management Plan". 2006. Retrieved 11 June 2007.
- "South Coast Rivercare - Deep River". 2007. Retrieved 17 June 2007.[dead link]
- "Walpole Wilderness Proposal" (PDF). 1998. Retrieved 9 August 2009.
- Western Australian Land Information Authority. "History of river names". Archived from the original on 16 February 2015. Retrieved 3 September 2011.
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