Analysis of the generation of extreme floods
For a set of 29 basins in southwest of Germany the generation of extreme floods, which were defined
as floods with a recurrence interval of larger than 10 years, was analyzed. Therefore, the influence
of event characteristics (i.e. rainfall amount, rain intensities, snow melt etc.) and basin properties
were analyzed (i.e. topography, geology, soils, land use, shape etc.). In addition, the atmospheric
circulation patterns that lead to extreme floods were investigated. It was demonstrated that a single
flood is a specific composition of the basin input (i.e. precipitation and snow melt) and the impacts
of antecedent moisture contents and basin properties. Available digital physiographic data have a
much lower significance for extreme flood estimation than precipitation data. This should be taken
into account in regionalization approaches.

Key publications:

  • Uhlenbrook S., Steinbrich A., Tetzlaff D., Leibundgut Ch., 2001: Zusammenhang zwischen extremen
    Hochwassern und ihren Einflussgrößen (Connection between extreme floods and their driving variables;
    in German). In: Arbeitskreis KLIWA (Klimaveränderung und Konsequenzen für die Wasserwirtschaft,
    Herausgeber), KLIWA-Symposium, 29.-30.11.2000, Karlsruhe, KLIWA-Berichte, Heft 1, 187-204.
  • Uhlenbrook S., Steinbrich A., Tetzlaff D., Leibundgut Ch., 2002: Regional Analysis of the
    Generation of Extreme Floods. 4th International Conference on FRIEND, Bridging the gap between
    research and practice, 18-22 March 2002, Cape town, South Africa, IAHS Red Book, 274, 243-250.
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