Tham khảo tài liệu 'studies on water management issuese part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 10 Studies on Water Management Issues Of final importance are the differences in policy. Whilst for extreme events the Regional Water Boards are responsible for policy making is Rijkswaterstaat responsible for the policy making with large-scale floods. Due to this difference other criteria or other processes are seen as important for flood policies. 4. Methodology of the integrated flood risk model Since it is now clear what the conditions are that need to be taken into account and what the dissimilarities are between the flood risk of extreme events and large-scale flooding it is possible to continue with the actual integrated flood risk model. Even though both types of risk are normally estimated using different models that differ in several aspects both models are based on the same underlying concepts namely depth-damage curves and maximum damages. It should therefore be possible to integrate both approaches into a single integrated flood risk model. This is possible since the integrated flood risk model -like the models it is based on - is mainly focused on direct damage and most of the differences described in the previous section . human casualties costs of preventing floods do not have a direct influence on that. Several studies note that the most important factor that determines direct damage in both extreme rainfall events and large-scale floods is the flood depth Merz et al. 2007 Penning-Rowsell et al. 1995 Wild et al. 1999 . Therefore the integrated flood risk model will be built around this parameter. In this section a general description of the methodology will first be explained then the input will be described and finally the damage factors and maximum damages. General outline of the flood risk model The integrated flood risk model uses the same approach as the Damage Scanner and the HIS-SSM model. In this approach a land use map and inundation map are used which are combined using damage curves and maximum damages per land use. Every land-use
