Flood risk analysis has traditionally been carried out at a local scale. There is, however, a need to identify flood prone areas and the associated risk at a national scale so that planning and resource allocation to undertake flood defence measures can be done in an effective way. Previously applied methodologies have considerable drawbacks that should be overcome. These include an assumption of the uniform flood magnitude countrywide for one scenario, application of steady state instead of dynamic hydraulic modelling approaches as well as disregarding of flood protection structures and their possible failures. The aim of this project is to develop a modelling system to produce a coherent regional flood risk assessment covering the whole of Germany. The system will consist of a chain of models covering the main processes of flood generation and damage.
A model chain for regional flood risk assessment in Germany.
The system consists of:
Through implementation of the developed system, changes in flood risk under climate change scenarios will be investigated. This will enable policy makers plan changes in the management strategy and level of investment for flood protection measures.
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