A key part of the EU Floods Directive is the preparation of flood hazard maps and flood risk maps. In order to obtain reliable flood hazard maps it is important that an appropriate type of inundation model is selected and that the models are applied properly. FLOODsite Task 8 supports flood risk managers in the selection and application of inundation models.
Task 8 developed and applied different types of models for the same pilot site. The model results were compared and the advantages and disadvantages of each model were assessed. The models were also used to assess the impact of different parameters on the model results.
Based on this analysis, guidelines were developed to determine
- What type of inundation model should be used, depending on the type of area and the available input data, and
- How to apply the inundation models properly.
This guidance is aimed at engineers and other practitioners undertaking flood inundation modelling.
Key words: flood inundation modelling, flood hazard mapping, long-term planning