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11 th International Symposium for GIS and Computer Cartography for Coastal Zones Managementing this data with different economic, social and ecological aspects (such as the number of inhabitants potentiallyaffected, sensitive buildings (e.g., schools, hospitals), the type of economic activity, and industrial installations thatmight cause accidental pollution in case of flooding) several thematic maps can be designed. Figure 1 shows someexamples of thematic maps used to support flood risk management, such as flood extent, flood probability, floodacceptability, and flood risk maps.Figure 1. Example of thematic maps used to support flood risk management.The maps provided in Figure 1 were developed taking into account the current mean sea level and result from thecombination of scenarios 1, 4 and 7 of Table1. Thus, i) the flood extent map illustrates the maximum flood extentgiven by scenario 1 (which also includes the flood extent of scenarios 4 and 7); ii) the flood probability map indicatesthe likelihood of a certain geographic area to be flooded (probability is higher if there is overlap of the threescenarios and lower if there is no overlap at all); iii) the flood acceptability map is a preliminary analysis of thedegree of acceptability based on the land use (degrees of acceptability were assigned to each land use class); and iv)the flood risk map results from a combined analysis of flood probability and flood acceptability, based on a riskassessment matrix. Furthermore, by anticipating some structural and non-structural measures we can, for example,simulate the response of the system by introducing them in the hydrodynamic model grid and analyse the outcomes,benefits and weaknesses.68