- 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
- New floods occur, providing additional data to fine-tune the model
- More advanced computer models or methods for estimating flood levels become available
- Changes in the catchment, such as flood mitigation works or new developments
- Changes in policy (such as Council's culvert Blockage Policy)
- We’ve considered Council's revised Blockage Policy
- We have improved information, such as recent data from land and waterway surveying
- The new flood model was checked against the June 2016 and March 2017 events and was able to produce the same flood levels recorded by the community
- The pedestrian bridge across the waterway is modelled as being partly blocked, in line with the updated Blockage Policy
- We’ve considered the upcoming lowering of the Gurungaty causeway
- The increase in mangrove growth over the last 10 years has been included
- There has been an increase in intense rainfalls that are causing the floods
- The changes in Gurungaty waterway have only minor impacts
- The volume of wet weather sewer overflows is relatively small and results from stormwater flows from within the catchment. Wet weather sewer overflows are not considered to be a contributing factor to the flooding issues at Swan Street and adjoining streets.
- Sea levels can impact on flooding in the area, as stormwater takes longer to drain out to sea from low-lying coastal areas in high tides
- New developments do not increase flows to this area
How does Council manage flood risk?
Why do flood levels need to be reviewed over time?
How are flood affected properties identified?
Where can I get information about flood levels on my property?
What has changed in the updated Wollongong City Flood Study?
What does the Study say about flooding in South Wollongong?
What other flood mitigation work is Council doing in this catchment?