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Australian Journal of Emergency Management. July 2018 edition.

Flood levees are a commonly used method of flood protection. Previous research has proposed the concept of the ‘levee paradox’ to describe the situation whereby the construction of levees leads to a lowered community awareness of the risks of flooding and increased development in the ‘protected’ area. The consequences of this are the risks of larger losses in less frequent but deeper floods when levees overtop or fail. This paper uses the recent history of flooding and levee construction to investigate the ‘levee paradox’ through a study of flood preparedness and floodplain development in Lismore, NSW.

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Interested in Learning More About Our Detailed Australian Riverine Flood Loss Model?

FloodAUS is Risk Frontiers’ detailed riverine flood loss model for Australian property exposures that incoroporates the latest flood studies, research and expertise. It is a probabilistic loss model incorporating high resolution flood modelling and data to represent the hazard as the average annual probability of floodwater depth at individual addresses in Australia. It is built using the National Flood Information Database (NFID) and supplemented with Risk Frontiers’ internal flood data collection and handling. Catchment correlations are incorporated using over 100 years of historical rain guage data and a semi-empirical approach was used to derive vulnerability curves.

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