Text size:

Wetlands

Georges River Council includes a wide variety of landscapes. A catchment is like a huge basin of land. When rainwater falls on it, most of the water will drain to the lowest point of the basin. There are over 35 kilometres of river foreshore on the Georges River which is part of the local government area and this is where most of our run-off is collected.

Council treats run-off by a number of methods including engineering solutions such as artificial as well as natural wetlands.  Wetlands are defined as land that is inundated with water on a temporary or permanent basis. They include marshes, swamps, lakes, mud flats, mangrove forests and other fresh, brackish or saline areas. Unfortunately, over the years, many wetlands in urban areas have been damaged or lost through clearing, land filling and development.

Wetlands are very important because they provide:

  • Plant and animal habitat - for a large variety of plants, birds, fish, mammal invertebrates, amphibians and reptiles. Many plants and animals only survive in wetlands, or depend on them, for part of their life-cycle

  • Breeding and nursery areas - breeding and nursery areas for a large range of animals including birds, fish and invertebrates. Estuarine wetlands (mangroves and salt marshes) have a well recognised link with the productivity of fisheries. Many commercial fisheries depend upon wetlands for their existence

  • Water quality and nutrient recycling - improve water quality by acting like ‘kidneys’, trapping sediment and nutrients. When stormwater run-off passes through the wetland it slows down, allowing sediments to settle and nutrients such as phosphates, and nitrogen are captured by wetland plants and undergo nutrient recycling

  • Flood regulation and erosion control - wetlands store large quantities of water in times of high flow and release it slowly during times of low flow. In this way, they can reduce peak flood flows, reducing erosion and flood damage

  • Recreational value - recreational opportunities including walking, bird watching, canoeing, picnicking and other forms of recreational activities

  • Education and scientific research opportunities

The following wetlands are located in the Georges River Council Local Government Area:

  • Edith Bay

  • Lime Kiln Bay

  • Riverwood Wetland

  • Moore Reserve

  • Shipwrights Bay

  • Myles Dunphy Reserve

Georges River Council has rehabilitated two wetlands in the local government area which had been heavily degraded in the past due to urban development and increased stormwater pollution. These are the Riverwood Wetland at Riverwood Park and the Lime Kiln Bay Wetland, near Waterfall Road and Bay Road, Oatley.

In addition Council has also constructed a wetland at Edith Bay, in Edith Bay Reserve, Lugarno and at Moore Reserve, Oatley, to assist with the management and treatment of stormwater in addition to creating habitat.
 

How you can help conserve local wetlands

  • Join Council’s Bushcare Volunteer Program which works to conserve wetlands and bushland

  • Ensure  domestic pets do not wander through the wetlands

  • Do not dump garden waste or other rubbish in wetland areas

  • When visiting wetland areas, avoid disturbing birds, particularly during breeding season

  • Make every effort to reduce litter and pollution.