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Volume 12, issue 11 | Copyright

Special issue: Costs of Natural Hazards

Nat. Hazards Earth Syst. Sci., 12, 3507-3518, 2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 26 Nov 2012

Research article | 26 Nov 2012

Long-term development and effectiveness of private flood mitigation measures: an analysis for the German part of the river Rhine

P. Bubeck1,2, W. J. W. Botzen1, H. Kreibich2, and J. C. J. H. Aerts1 P. Bubeck et al.
  • 1Institute for Environmental Studies (IVM), Faculty of Earth and Life Sciences (FALW), VU University, De Boelelaan 1087, 1081HV Amsterdam, The Netherlands
  • 2Helmholtz Centre Potsdam, German Research Centre for Geosciences GFZ, Section Hydrology, Telegrafenberg, 14473 Potsdam, Germany

Abstract. Flood mitigation measures implemented by private households have become an important component of contemporary integrated flood risk management in Germany and many other countries. Despite the growing responsibility of private households to contribute to flood damage reduction by means of private flood mitigation measures, knowledge on the long-term development of such measures, which indicates changes in vulnerability over time, and their effectiveness, is still scarce. To gain further insights into the long-term development, current implementation level and effectiveness of private flood mitigation measures, empirical data from 752 flood-prone households along the German part of the Rhine are presented. It is found that four types of flood mitigation measures developed gradually over time among flood-prone households, with severe floods being important triggers for an accelerated implementation. At present, still a large share of respondents has not implemented a single flood mitigation measure, despite the high exposure of the surveyed households to floods. The records of household's flood damage to contents and structure during two consecutive flood events with similar hazard characteristics in 1993 and 1995 show that an improved preparedness of the population led to substantially reduced damage during the latter event. Regarding the efficiency of contemporary integrated flood risk management, it is concluded that additional policies are required in order to further increase the level of preparedness of the flood-prone population. This especially concerns households in areas that are less frequently affected by flood events.

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