How does Wollongong City Council manage flood risk?
- emergency response plans based on detailed understanding of flood behaviour
- building new structures that collect and carry stormwater into drains or creeks, such as detention basins and swales, or improving existing ones to better manage stormwater and floods
- land zoning that says what can and can’t be built on flood-prone land
- voluntary purchase of houses built in high flood risk areas
Why do flood levels and information need to be reviewed over time?
- New floods occur, providing additional data to fine-tune the model
- Flood mitigation works undertaken may change flood levels
- More advanced computer models become available
- Development within the floodplain (which may be outside Council’s control)
How are flood affected properties identified?
Where can I get information about flood levels on my property?
What is a “1 in 100 year” flood?
What is the Flood Planning Area?
The area within which developments may be conditioned with flood-related development controls. The flood planning area is calculated as the area below the Flood Planning Level.
What is the Flood Planning Level?
What is a Freeboard?
What should I do in the event of a flood?
Why does Council study flooding?
What is the difference between a Flood Study and a Flood Risk Management Study and Plan?
What can I do around my yard to help keep watercourses clean?
- Be careful not to dispose of grass clippings and other garden cuttings in or near watercourses and remove any obstructions that may cause blockages or divert flood waters.
- Be aware of any drainage easements or overflow paths that affect your property. Seek Council approval before altering your driveway or footpath levels, as this may cause water to flow off the road and down your driveway.
- Take care when planting trees near drainage pipes. Certain species with aggressive root systems e.g. Jacaranda, Poplar, Willow, Fig, Camphor Laurel and Rubber Trees can cause pipes to become blocked or cracked.
- Don’t lay any pipes, construct a bridge or divert a watercourse without first consulting Council. Unapproved work can increase flooding for both you and your neighbours.
- Don’t fill low-lying areas of your yard without seeking Council approval, as this may cause water to pond and increase flooding potential on your and your neighbours’ properties.
- Keep drainage inlets on your property clear of any rubbish or blockages. Remember, large paved areas will increase runoff, so you may need extra drainage.