HW3D: A tool for interactive real-time 3D visualization in GIS supported flood modelling

Large numerical calculations are made to get a prediction what damage a possible flood would cause. These results of the simulation are used to prevent further flood catastrophes. The more realistic a visualization of these calculations is the more precaution will be taken by the local authority and the citizens. This paper describes a tool and techniques to get a realistic looking, three-dimensional, easy to use, real- time visualization despite of the huge amount of data given from the flood simulation process.