Author(s): T. L. Mcgrath; W. D. Weeks; J. P. Stewart; K. E. Bashar; K. N. C. Karunarathna
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Keywords: No Keywords
Abstract: The Gateway Motorway provides a vital north-south link east of the Brisbane central business district, and is approaching capacity in many sections. This paper describes the initial phases of a flood study that aims to assess the potential impact of the upgrade of the northern section of the motorway on trafficability, in nearby urban areas, and in the ecologically important Boondall and Tinchi Tamba wetlands. The study involved the development of SOBEK linked one dimensional/two dimensional (1D/2D) hydrodynamic models for Nundah, Cabbage Tree and Bald Hills Creeks. Verification was achieved by comparison to existing 1D MIKE 11 models. A range of design flood and tidal events were simulated, assuming full urban development. A number of advantages of 1D/2D modeling were identified. The developed models are now ready to assess options for the upgrade of the Motorway.
Year: 2009