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Great Mackeral Beach
Watercourse
Where does it flow to?
Pittwater Estuary (western foreshore).
When has it flooded in the past?
1974, 1987, 1992, 1998, 2003
How many properties are flood affected?
Approximately 100, with about 22 properties flooded above floor level in a 1%AEP flood event.
What are the flood risks?
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Flooding can occur from flash flooding from the creek after heavy rainfall in the catchment or from waves and king tides from the Pittwater Estuary during a severe ocean storm or a combination of both.
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Flash flooding means that flooding will occur quickly and there will be little opportunity for warning or assistance before or during a flood.
What is Council doing?
- Great Mackerel Beach Flood Study (Cardno Lawson Treloar, 2005) was adopted by Council in October 2005.
- Flood Planning Levels for all properties shown on the Flood Hazard Map were adopted by Council in July 2005
- Flood Risk Community Working Group was formed in 2007.
- Community Working Group Meeting - Entrance Management Workshop (30 July 2008) Presentation
- Great Mackerel Beach Floodplain Risk Management Study and Plan was adopted by Council in December 2010.
What can I do?
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Being prepared for a flood is the best way to reduce the risks. The State Emergency Service (SES) is the lead response agency for floods, storms and tsunami across NSW. See the SES website for ways you can prepare for a flood.
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Council will post information on the website and advertise in the local media whenever new information becomes available.
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