Flood level search

A flood search system is in place to provide designated flood levels.

A flood level search report can be obtained for a property. It summarises available flood information for a property. This includes:

  • like estimated designated flood level (for determining floor levels). The City requires residential habitable floor levels to be at or above the height of the combined defined flood level, with minimum freeboard (300 millimetres) as prescribed in the Flood Overlay Code of the City Plan and the Building Regulation 2006. Freeboard associated with other land use types can be found in the City Plan Flood Overlay Code.
  • ground level at the centre of the property.

The search does not show the flood extent.

We recommend owners engage a licensed surveyor to determine accurate property and floor levels.

What does a flood search report include?

The outcome of a flood search is the Designated Flood Level. Results are in metres AHD (Australian Height Datum). As a general guide, 0.0 metres AHD is close to the mean sea level. So, 1.5 metres AHD is approximately equal to 1.5 metres above Mean Sea Level. The Designated Flood Level reflects the impact of a rain event that has a minimum one per cent chance of occurrence in any given year (1% AEP) coinciding with a storm-tide for most areas.

Flood search results refer to riverine or regional flooding only. Results do not cover local (flash) flooding. Regional flooding is caused by long duration rainfall over a whole catchment or number of catchments.

As an example, a flood the size of a 100-year ARI has one chance in 100 (1%) of occurring in any one year. There is no guarantee:

  • when such a flood will occur
  • that it won't be much larger
  • that it will only occur once in any year.

If your property is not below the Designated Flood Level, your property may be still affected by extremely rare flood events.

Example of flood search design

Online

Complete and submit our online form

Enter your property and contact details, then scroll through the form until you see the 'Plans, Maps and Documents' section. Select 'Flood level information' from this section.

An administrative fee is payable for undertaking the search and forwarding the results. Fees can be found in the Register of fees & charges.

Payment for the search can be made online by credit card and will incur a surcharge.

APPLY ONLINE

If you would like to pay by account, apply for a Business Partner account by completing and submitting an Application for credit account form(PDF, 86KB)

In person

Step 1.Complete the application form

Download, print and complete the Search request form(PDF, 358KB)

Tick 'Flood level information' in the 'Plans, maps and Documents' section of the form.

Step 2.Visit one of our customer service centres

Submit your application and pay at one of our customer service centres Monday to Friday between 8.15am and 4.30pm.

An administrative fee is payable for undertaking the search and forwarding the results. The fee is stated on the form.

Payment for the search can be made using EFTPOS or by cheque. Payment by credit card will incur a surcharge.

By mail

Step 1.Complete the application form

Download, print and complete the Search request form(PDF, 358KB)

Step 2.Send us your completed application form

An administrative fee is payable for undertaking the search and forwarding the results. The fee is stated on the form.

Please forward a cheque for payment of the search with your application.

Post to:

City of Gold Coast
PO Box 5042
GOLD COAST MC QLD 9726