Natural Hazards and Earth System Science www.nat-hazards-earth-syst-sci.net 1561-8633 1684-9981 10 4 2010 10.5194/nhess-10-881-2010 http://www.nat-hazards-earth-syst-sci.net/10/881/2010/ http://www.nat-hazards-earth-syst-sci.net/10/881/2010/nhess-10-881-2010.html http://www.nat-hazards-earth-syst-sci.net/10/881/2010/nhess-10-881-2010.pdf 881 894 2010-04-22 Estimation of an absolute flood damage curve based on an Austrian case study under a dam breach scenario F. Prettenthaler franz.prettenthaler@joanneum.at P. Amrusch C. Habsburg-Lothringen Joanneum Research, Institute of Technology and Regional Policy, Elisabethstraße 20, 8010 Graz, Austria Wegener Center for Climate and Global Change, University of Graz, Leechgasse 25, 8010 Graz, Austria To date, in Austria no empirical assessment of absolute damage curves has been realized on the basis of detailed information on flooded buildings due to a dam breach, presumably because of the lack of data. This paper tries to fill this gap by estimating an absolute flood-damage curve, based on data of a recent flood event in Austria in 2006. First, a concise analysis of the case study area is conducted, i.e., the maximum damage potential is identified by using raster-based GIS. Thereafter, previous literature findings on existing flood-damage functions are considered in order to determine a volume-water damage function that can be used for further flood damage assessment. Finally, the flood damage function is cross validated and applied in prediction of damage potential in the study area. For future development of the estimated flood damage curve, and to aid more general use, we propose verification against field data on damage caused by natural waves in rivers. Amt der NÖ (Niederösterreichischen) Landesregierung: Richtlinien für die Gewährung von Beihilfen zur Behebung von Katastrophenschäden, 2005. 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