transboundary aspects • Major similarities (also in the historical context) - top-down approaches and insufficient participation of the population in planning processes, lead to conflicts in the past and present regarding flood prevention measures on both sides of the border. - Flood management projects are in many cases large scale projects, planned by the water authorities and presented to the public as ready made decisions (in the past) or at public hearings (at present). - Regarding the large number of people affected (be it directly or indirectly (diffuse), it is not surprising that the number of court cases increases.
conclusions 1. reconstruction of historical floods at high spatial-temporal resolution allow insights into flood hazard perception 2. spatial patterns of flood concurrencies reveal local, regional and supraregional dimensions of flood events 3. changes in flood frequencies (long times series) not coherent between different rivers 4. reconstruction of underlying climatological causes possible at different scales 5. derivation of damage maps as part of vulnerability analysis possible 6. flood control was exploited for political objectives (transnational comparison) 7. border is reflected in risk perception, risk management and risk assessment 8. today flood risk management is controlled by EU policies 9. technical alterations within Rhine system led to mitigation of flood risk but today is regarded as major cause for heavy flood events along the middle and lower Rhine (up- and down-stream effects) 10.implementation of major technical installations (e.g. reservoirs) is under debate among the local and regional population and part of political participatory discussion 73