Infrequent (1% annual chance)

This insurance flood mapping has been prepared using the flood modelling outputs prepared by the City of Gold Coast Natural Hazards team concluding May 2022 and updated Jan 2025 (for DTM) and April 2026 (for Nerang River Catchment), for the Designing for Flood program using present-day scenario modelling . It has been developed in response to a request by the Insurance Council of Australia for mapping that does not take into account climate change factors . The mapping was produced for this limited purpose. The flood insurance map shows the statistical flood extents for a range of events. The statistical design rainfall ‘events’ used in the flood modelling that underpinned the preparation of this map are: • 20% AEP (generally known as 1 in 5 or frequent flood event) • 5% AEP (generally known as 1 in 20 or infrequent flood event) • 1% AEP (generally known as 1 in 100 or infrequent flood event) • 0.2% AEP (generally known as 1 in 500 or rare flood event) • 0.05% AEP (generally known as 1 in 2000 or extremely rare flood event) • Extreme flood event The flood insurance map does not show depth or height, and does not include climate change factors. This draft mapping has been developed for insurance purposes only, not regulatory purposes, and is subject to change.