Flood Information for a Property
There are a number of ways to find out about flood risks of specific areas of the Sunshine Coast.
Requesting flood information
Before building or purchasing a property, council encourages owners and potential owners of a property to submit a request for flood information to determine the property's flooding potential. You can obtain flood search information or certificates from council by submitting a property search application.
This is a search for flood information for a specific property (a fee applies). The property search notifies existing and future owners of the property of the value of the Define Flood Event (DFE). This is the greater of a relevant nearby historic flood level or the 1:100 (1%) AEP flood level. The DFE level and an appropriate safety freeboard (also provided on the certificate) is used to advise the minimum habitable floor level associated with the property.
A flood search certificate is sometimes usesful when negotiating premiums with an insurance company, as the certificate indicates the desired minimum floor level regulated by the relevant planning scheme. In some situations it may also be necessary to engage a surveyor to establish built floor level to show clearly that the built floor level is above the required minimum floor level.
Council's flood search certificate may also describe the following information for a nominated property:
- proximity to a declared drainage deficient area (former Maroochy Shire area only)
- proximity to a flood regulation line (former Maroochy Shire area only).
Council’s MyMaps website provides the estimated extent of the Major Flood, 1:100 (1%) probability event. This event is generally also known as the Defined Flood Event that is used by council's planning scheme to regulate the minimum habitable floor heights.
This mapping is currently the most appropriate guidance that council can provide for assessing the likelihood of a major flood at a property. It is sensible to use this information when considering buying a property or for insurance purposes. The information is based on a best estimate of the likely flood extent associated with a Major Riverine or Storm Tide event (one that has a 1% chance of occurring in a given year). However, as per the Queensland Flood Commission of Inquiry Report, it is possible for larger (more extreme) floods to occur.
This mapping system allows you to explore and zoom to property level. It combines the river (riverine) flooding and storm tide flooding maps into a single map for the Sunshine Coast.
This mapping system also show areas where the terrain has been modified (labelled as modified flood extent) where the flood model is yet to be re-run to map the revised flood extent. This is most likely to occur in areas that have been recently developed.
This mapping information will be the most up-to-date flood information available. Council last updated this information on 24 May 2013. If you experience difficulty in viewing these maps, please contact council's customer service centre.
Note about these maps
The information in these maps is generated only from detailed computer modelling, with terrain data inputs captured through ground survey, Aerial Laser Survey (ALS) and rainfall/catchment data inputs taken from the Bureau of Meteorology and other applicable engineering guidelines. Council regularly reviews and updates its flood models to incorporate the latest computer modelling techniques, terrain and climatic factors. The detailed computer modelling is not available in all areas and as a result flood mapping may not be available. Modelling and mapping is prioritised around population centres.
This ALS data is captured periodically, so the mapping may show inundation of land that has recently been filled, such as a new subdivision. Future updates will aim to rectify these differences.
The maps do not show the depth or the velocity of the water. They show only the extent (area) of flood waters. A flood search certificate can provide the water surface elevation (mAHD) for a specific property.
The maps also represent only the inundation caused by the peak water level. They do not give any guidance on the duration of the inundation.
You can view a list of definitions to help understand the flood terminology used in council's flood maps.
While every care is taken to ensure the accuracy of this product, neither council nor the State of Queensland makes any representations or warranties about its accuracy, reliability, completeness or suitability for any particular purpose and disclaims all responsibility and all liability (including without limitation, liability in negligence) for losses, damages (including indirect or consequential damage) and costs that may occur as a result of the product being inaccurate or incomplete in any way or for any reason.
The above maps are your best source of information for flood prone land. The relevant planning scheme for your location aso contains an overlay for flood prone lands. However, this is current at the time of release of the planning scheme and cannot be updated with the latest flood information. The planning scheme may contain either relevant overlay or regulatory maps for the area of interest.
- Local advice from long-term Sunshine Coast residents may reveal personal experiences of flooding in your area.
- Professional advice from an independent, qualified engineer may provide additional and comprehensive information.
- You may also wish to seek informal flooding advice from council.
Note: Confirmation of the known or anticipated flooding conditions may only be obtained by submitting an application for flood search information/certificate. To arrange an appointment with a council officer, contact council’s customer service centre.
For more information, or if you have a query, please email