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Bankstown Airport – Flooding Events

 Bankstown Airport – Flooding Events

This 1986 image [annotated below comments] Have We Forgotten About Flooding on the Georges River , shows Bankstown Airport in the right rear of the image, with the N-S runway and three E-W runways visible.

There is substantial flooding on the site, hence any fill dumped to the south of the site will affect flood peaks regionally and local flows by reducing the ponding and peak flow characteristics to the Georges River.

The Bankstown Management Plan has an environmental section to it, and concerns have been expressed for a period of time.

Previous comments have been made by Senator Fawcett.

BK Flooding 1986
BK Flooding 1986 annotated


In a report by Bewsher Consulting Pty Ltd in the 2001 Floodplain Management Authorities Conference
Have We Forgotten About Flooding on the Georges River? Page 4 CNF33-1.doc:

Many people living on the banks of the Georges River will remember the 1986 and 1988 floods. These are the largest floods to have occurred over the last 30 years. Both floods are estimated to be about a 20 year flood. It has been estimated that the 1988 flood inundated over 1,000 residential properties along the Georges River, Prospect Creek and Cabramatta Creek, with an estimated damage of over $40M (2000).
Very few people will remember the 1956 flood, which was the largest flood to have been recorded over the last 100 years. However, this flood is still relatively small compared to other historical floods that have occurred.
No one living remembers the 1873 flood. This is the largest flood to have been recorded along the Georges River. The level at Liverpool was 1m higher than the estimated 100 year flood. Three other large floods, similar to a 100 year flood, are reported to have occurred towards the end of the 19th century.
Thus whilst the Georges River has a long history of flooding, those floods that are remembered by residents are relatively small in comparison to others that are possible, and that have occurred in the past.



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