1 Georges River Geog Assignment


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1 Georges River Geog Assignment

  1. 1. Issues in Australian Geography-Georges River Catchment Introduction to the Georges River The Georges River is a waterway in the state of New South Wales in Australia. It rises to the south-west of Sydney near the town of Appin, and then flows north past Campbelltown, roughly paralleling the Main South Railway. At Liverpool it then turns east and flows past suburbs such as East Hills, Lugarno, Bangor and Blakehurst, before emptying into Botany Bay at Taren Point in the southern suburbs of Sydney. Description of location of the Georges River The Georges River begins its journey near Appin, and is fed by a major tributary Madden's Creek. It then flows through the areas of Campbelltown, Liverpool, Bankstown, Menai, Hurstville and Rockdale until it reaches Botany Bay.
  2. 2. Major tributaries include Cabramatta Creek, Prospect Creek and the Woronora River. The Georges River is popular for recreational activities such as water skiing and swimming. The banks of the river along the lower reaches are marked by large inlets and indentations overlooked by steep sandstone ridges and scarps, many being home to expensive residential properties. The Georges River features some artificial lakes in the suburb of Chipping Norton, near Liverpool. These lakes, known as the Chipping Norton Lakes, are the result of sand mining. The Lakes are now a popular water sports and recreational facility. Geographical Processes relevant to the catchment A catchment is an area where water is collected by the natural landscape. In a catchment, all rain and run-off water eventually flows to a creek, river, lake or ocean, or into the groundwater system.
  3. 3. Natural and human systems such as rivers, bushland, farms, dams, homes, plants, animals and people can co-exist in a catchment. Healthy catchments provide:  a source of clean drinking water  unspoilt natural areas for recreation and scenic enjoyment  habitat for plants and animals  healthy vegetation and waterways  reliable and clean water for stock and irrigation, and  Opportunities for sustainable agriculture and industry. The Georges River is home to many different species of flora and fauna and has a big biodiversity range. The Georges River is used for recreational activities such as fishing, water skiing and boating, it is also used for commercial oyster farming and the water from the Georges River connects with the Woronora River which is then used for drinking water and water around the house. Fluvial processes comprise the motion of sediment and erosion of or deposition on the river bed. Erosion by moving water happens in two ways. First, the movement of water across the bed has an effect (This is called hydraulic action). Second, the sediment being transported in the river wears away the bed (Abrasion) and the fragments themselves are ground down becoming smaller and more rounded (Attrition). The sediment is transported as either bedload (The coarser fragments which move close to the bed) or as the suspended load (Finer fragments carried in the water). There is also a component carried as dissolved material. Storm water runoff & waste water issues The water quality was not good enough to be drinkable. But it was acceptable to swim in. Test Type Test Results Acceptable Std Chemical Phosphates 1 0-0.1 ppm pH 7 6-8.3 Biological Faecal Coliform- <4 colonies per Easgel 2.5ml Physical Turbidity 10.15 <30 NTU
  4. 4. There were a few particles in the water at the time of testing and there was little litter present. There were no odours. The major sources of pollution to the Georges River Estuary are stormwater run off from urban areas including roads and open spaces, wet weather sewer overflows, past contamination of land and sediment, and stormwater run off from rural lands. These sources put metals, oils, grease, toxic organic compounds and high levels of nutrients in the river. Contaminants found in bottom sediments have resulted in commercial and recreational fishing bans in the lower reaches. An oyster industry previously operated but was stopped due to oyster disease. In addition, poor water quality after heavy rains compromises swimming and boating activities. Increased runoff from impervious surfaces, the removal of upland swamps, groundwater extractions and past dredging have modified the volume and pattern of the river flows. An evaluation of Georges River Catchments current management practices Name of plan This plan is Greater Metropolitan Regional Environmental Plan No 2— Georges River Catchment. 2 Where plan applies This plan applies to the Catchment, which is part of the region declared under the Act and known as the Greater Metropolitan Region. The Catchment consists of parts of Bankstown City, Blacktown City, Campbelltown City, Camden, Canterbury City, Fairfield City, Holroyd City, Hurstville City, Kogarah, Liverpool City, Rockdale City, Sutherland, Wollondilly and Wollongong City local government areas that are within the Georges River Catchment. The catchment map indicates the boundary of the Catchment. 5 Aims and objectives (1) The general aims and objectives of this plan are as follows: (a) to maintain and improve the water quality and river flows of the Georges River and its tributaries and ensure that development is managed in a manner that is in keeping with the national, state, regional and local significance of the Catchment,
  5. 5. (b) to protect and enhance the environmental quality of the Catchment for the benefit of all users through the management and use of the resources in the Catchment in an ecologically sustainable manner, (c) to ensure consistency with local environmental plans and also in the delivery of the principles of ecologically sustainable development in the assessment of development within the Catchment where there is potential to impact adversely on ground water and on the water quality and river flows within the Georges River or its tributaries, (d) to establish a consistent and coordinated approach to environmental planning and assessment for land along the Georges River and its tributaries and to promote integrated catchment management policies and programs in the planning and management of the Catchment, (e) to encourage more effective consultation between local government and State Government agencies in executing the responsibility for environmental planning within the Catchment, (f) to provide a mechanism that assists in achieving the water quality objectives and river flow objectives agreed under the Water Reform Package. Current river plans are effective, but they are hard to notice because it takes a lot of time for its effect to be seen. Propose Individual and Government/Group action Individuals can use less storm water, not littering in the river, campaigning with friends against dumping rubbish in the river. Government/groups can help by removing litter, using more environmentally friendly products. They can also raise awareness through education, campaigns and T.V. advertising. Governments can shut off all storm water pipes into the Georges River, invest in environmentally friendly products and reduce fishing.
  6. 6. http://www.sca.nsw.gov.au/the-catchments/what-is-a-catchment http://www.campbelltown.nsw.gov.au/default.asp?iSubCatID=1448&iNavCatID=1402 http://en.wikipedia.org/wiki/Georges_river http://www.planning.nsw.gov.au/plansforaction/georges.html http://www.georgesriver.org.au/Estuary-Management-Plan.html http://www.environment.nsw.gov.au/ieo/GeorgesRiver/report-02.htm