Integration of High Resolution Topographic Data with Floodplain Flow Models

Two-dimensional hydraulic models of floodplain flow are at the forefront of current research into flood inundation mechanisms, but they are however currently constrained by inadequate parameterisation of topography and friction due primarily to insufficient and inaccurate data. This paper reviews the effects of inadequate topographic representation on flood inundation extent prediction and presents initial results of a flood simulation using a new topographic parameterisation surface produced from airborne LIDAR (Laser Induced Direction and Ranging) data.