AUTOMATED CATCHMENT PARAMETERISATION FOR RUNOFF ROUTING MODELS UTILISING 3D GIS CONTOUR INFORMATION

This paper describes the development of a comprehensive subcatchment parameterisation tool and GIS interface for hydrologic modelling. The interface has been tailored to automate the currently predominantly manual process of setting up lumped hydrologic models for flood estimation on natural and urban catchments. Key outcomes of the research are rapid, reproducible and accurate automated delineation of subcatchments, measurement of generalised topographic attributes and determination of lag parameters. The interface also provides numerous hydrologic and topographical assessment tools to allow users to quickly determine geophysical properties of the subcatchments.