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Mapping floods is important for policy makers to make timely decisions in regards to emergency responses and future planning.It is therefore crucial to develop a rapid inundation modelling framework to map flood inundation.This study develops an airborne scanning laser altimetry(LiDAR)digital elevation model(DEM)based Rapid flood Inundation Modelling framework(LiDAR-RIM)for assessment of inundation extent,depth,volume and duration for flood events.The modelling framework has been applied to the mid-Murrumbidgee region in the southeast Murray-Darling Basin,Australia for two flood events occurred in December 2010 and March 2012.The inundation extents estimated using this methodology compared well to those obtained from two Landsat ETM+ images,demonstrating suitability and appli-cability of this method.For testing possibility of larger area application,the framework also uses 30-m resolution shuttle radar topography mission(SRTM)-DEM to replace LiDAR-DEM for the same modelling.The inundation extents obtained by using the SRTM-DEM are smaller than those obtained using the LiDAR-DEM,especially for large flood events.A possible rea-son is that the river cross sections obtained from the SRTM-DEM are not accurate enough for inundation modelling.The LiDAR-RIM has an advantage for process modelling and scenario modelling under future climatic conditions.