Canning River (Western Australia)

The Canning River is a major tributary of the Swan River in southwestern Western Australia. With headwaters on the Darling Scarp, the Canning meanders through suburbs of Perth on the Swan Coastal Plain, including Cannington, Thornlie, Riverton, Shelley, Rossmoyne and Mount Pleasant, before joining the Swan at Melville Water just downstream of the Canning Bridge.

The Canning River was named after George Canning, Prime Minister of the United Kingdom in 1827 whose government facilitated the expedition by James Stirling to establish the Swan River Colony. Canning's name is honoured by a number of other features in Western Australia.

Convicts constructed the Canning River Convict Fence for the use of barges carrying timber from Mason's Timber Mill in the Darling Ranges [Carden, F.G. Along the Canning: A History of the City of Canning Western Australia, Covering its progress from Roads Board to Shire, to Town, to City City of Canning, 1st Edition 1968, 2nd edition, 1991,] [McQueen, Jeanette 'Pioneers of the Canning District' thesis prepared for Graylands Teachers' College 1963, p.13.] [Detail from 'Municipal Heritage Inventory', City of Canning. [Hutchison, D. and Davidson, D. 'The Convict Built "Fence" in the Canning River' Records of the Western Australian Museum Vol. 8 (1), 1979.] [J.S.H. LePage Building A State: The Story of the Public Works Department of Western Australia 1829-1985 Water Authority of Western Australia, Leederville, 1986, pp.211-] is a notable landmark still to this day.

The Canning River is at the back of a very famous book called "My Place" by Sally Morgan. Sally always comes and plays in the dam which then leads to Canning River. Sally loves Wild Life and this is a great way to find it, in this river.

The river is home to much wildlife including dolphins, pelicans, swans and many other bird species.

Algae Bloom

Algal blooms occur naturally in the Canning River system, they are caused by a buildup of nutrients in the river. Human activities including farming, residential gardens and parklands are the major causes of increases in levels, the blooms are potentially toxic to both mammal and marine life. The Swan River Trust monitors the levels of nutrients and growth of the algae issuing warnings and closing sections of the river to all activities. The Trust also operates cleanup programs to reduce the amount of nutrients reaching the river, as well phosphorus removal and oxygenation in areas were blooms have been identified. [ [http://portal.environment.wa.gov.au/pls/portal/docs/PAGE/ADMIN_SRT_MEDIA/MEDIA_REPOSITORY/ALGAL%20UPDATE.PDF Agal Bloom] Swan River Trust press release Mar 16, 2007]

The Trust is encourage by the appearance of "Azolla" carpets on sections of the Canning River as this fern is known to reduce the amount of sunlight available to the algae as well as absorbing large amounts of phosphorus and other nutrients from the water. The benefits of Azolla also raise concerns about deoxygenation of the water and omit a strong sulphur odor. [ [http://portal.environment.wa.gov.au/pls/portal/docs/PAGE/ADMIN_SRT_MEDIA/MEDIA_REPOSITORY/AZOLLA.PDF Native fern on Canning River] Media release by Swan River Trust Mar 6, 2007]

ee also

*Head of the River (Australia)
*Mount Henry

Further reading

*
*
*
*
*

References