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The impacts of flooding can be significant, especially to buildings, infrastructure, roads and land.
If you live in an area near a river, creek or stormwater channel, you may be susceptible to flooding. Increased water runoff from surfaces such as driveways, roofs and paving also contribute to flooding in major storm events. Climate change is another factor that has increased the intensity and frequency of storms, rainfall and tidal events.
The area's at most risk of flooding in our Local Government Area are the floodplains of the Cooks and Georges Rivers.
We actively work to reduce the impact of flooding and undertake a number of flood studies.
We are members of
Floodplain Management Australia, an organisation committed to promoting appropriate development within the floodplain, and reducing the risks of flooding to life and property.
On 14 July 2021 the State Government made changes to flood prone land across NSW in response to serious flooding that has occurred in recent times. These changes require all Councils to alter what properties we identify as flood affected and to require councils to carefully consider impacts of development in low flood risk areas by stipulating new planning requirements.
Council has a chapter in the Development Control Plan (DCP) - Part B12 - which deals specifically with Flood Risk Management in the Local Government Area. Part B12 of the DCP supports the Local Environmental Plan for Bankstown by providing additional objectives and development standards to control the development of flood prone land in the City.
Bankstown Development Control Plan (DCP) 2015
Part B12 - Flood Risk Management
Schedule 1 - Flood Compatible Materials
Schedule 2 - Land Use Categories
Schedule 3 - Georges River Floodplain
Schedule 4A - Carinya Road, Picnic Point Floodplain
Schedule 5 - Catchments affected by Stormwater Flooding
Schedule 7 - Explanatory Notes on Lodging Applications
Council is preparing flood studies for catchments affected by stormwater flooding (flash flooding). Stormwater flooding is different to riverine flooding, which is defined as rising water from a river or creek such as flooding on the Georges or Cooks Rivers. However, it is important to note that stormwater flooding can still result in major damage.
Completed studiesThe table below provides a list of completed stormwater catchment flood studies. Most studies are available in eBook format.
Stormwater Catchment Floodplain Risk Management Plans have been commissioned for three major catchments in the LGA (if information is available on this plan, the hyperlinks will be active):
Other Stormwater Catchment Floodplain Risk Management Plans will be commissioned progressively in the future.
The consequences of flooding in the Georges River are significant in Canterbury-Bankstown. This was evidenced by the floods that occurred in 1978, 1986 and 1988. The largest of these floods occurred in 1986 and was equivalent to a 1 in 20 year event.
As an important strategic initiative in managing the flood prone land along the Georges River, Council commissioned consultants to prepare the Georges River Floodplain Management Study and Plan. This study was prepared jointly for Fairfield, Liverpool and Sutherland Councils to ensure compliance with the NSW Governments Flood Prone Land Policy. Council adopted this study in late 2004.
The study mapped all areas that are at risk of flooding, including areas that are at risk in a greater than 100 year flood event. The study found that in 100 year flood around 261 residential properties containing a house and around 65 commercial and industrial properties containing a building would be inundated by flood water. Based on this mapping, the floodplain has been divided into three flood risk precincts: high, medium and low. This allows a risk-based approach for floodplain management that provides a graded approach for land use and development.
The study has also reviewed Council's existing flood mitigation infrastructure and has made recommendations for improving emergency management issues and enhancing flood awareness in the community by linking Bureau of Meteorology flood gauge heights to flood levels for specific properties.
The study can be accessed using the links below:
For more information, contact our Customer Service Centre on 9707 9000.