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Volume 19, issue 10 | Copyright

Special issue: Floods and their changes in historical times – a European...

Hydrol. Earth Syst. Sci., 19, 4149-4164, 2015
https://doi.org/10.5194/hess-19-4149-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 14 Oct 2015

Research article | 14 Oct 2015

Reconstruction of flood events based on documentary data and transnational flood risk analysis of the Upper Rhine and its French and German tributaries since AD 1480

I. Himmelsbach1, R. Glaser1, J. Schoenbein1, D. Riemann1, and B. Martin2 I. Himmelsbach et al.
  • 1Physical Geography, Albert-Ludwigs Universität Freiburg, Freiburg, Germany
  • 2CRESAT, University of Haut-Alsace, Mulhouse, France

Abstract. This paper presents the long-term analysis of flood occurrence along the southern part of the Upper Rhine River system and of 14 of its tributaries in France and Germany covering the period starting from 1480 BC. Special focus is given on the temporal and spatial variations of flood events and their underlying meteorological causes over time. Examples are presented of how long-term information about flood events and knowledge about the historical aspect of flood protection in a given area can help to improve the understanding of risk analysis and therefor transnational risk management. Within this context, special focus is given to flood vulnerability while comparing selected historical and modern extreme events, establishing a common evaluation scheme.

The transnational aspect becomes especially evident analyzing the tributaries: on this scale, flood protection developed impressively different on the French and German sides. We argue that comparing high technological standards of flood protection, which were initiated by the dukes of Baden on the German side starting in the early 19th century, misled people to the common belief that the mechanical means of flood protection like dams and barrages can guarantee the security from floods and their impacts. This lead to widespread settlements and the establishment of infrastructure as well as modern industries in potentially unsafe areas until today. The legal status in Alsace on the French side of the Rhine did not allow for continuous flood protection measurements, leading to a constant – and probably at last annoying – reminder that the floodplains are a potentially unsafe place to be. From a modern perspective of flood risk management, this leads to a significant lower aggregation of value in the floodplains of the small rivers in Alsace compared to those on the Baden side – an interesting fact – especially if the modern European Flood directive is taken into account.

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The article presents a long-term analysis of flood occurrence along the southern part of the Upper Rhine River system and of 14 of its tributaries in France and Germany since 1480 BC. Special focus is given to temporal and spatial variations of flood events and their underlying meteorological causes over time, knowledge about the historical aspects of flood protection and flood vulnerability, while comparing selected historical and modern extreme events, establishing a common evaluation scheme.
The article presents a long-term analysis of flood occurrence along the southern part of the...
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