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Water 2014, 6(8), 2367-2393; doi:10.3390/w6082367
Article

Flood Damage Modeling on the Basis of Urban Structure Mapping Using High-Resolution Remote Sensing Data

1
,
2,3
 and
1,*
1 Section Hydrology, Helmholtz Centre Potsdam—German Research Centre for Geosciences GFZ, Telegrafenberg, Potsdam 14473, Germany 2 Section Remote Sensing, Helmholtz Centre Potsdam—German Research Centre for Geosciences GFZ, Telegrafenberg, Potsdam 14473, Germany 3 Animal Ecology I, University of Bayreuth, Bayreuth 95440, Germany
* Author to whom correspondence should be addressed.
Received: 1 April 2014 / Revised: 28 July 2014 / Accepted: 28 July 2014 / Published: 11 August 2014
(This article belongs to the Special Issue Advances in Remote Sensing of Flooding)
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Abstract

The modeling of flood damage is an important component for risk analyses, which are the basis for risk-oriented flood management, risk mapping, and financial appraisals. An automatic urban structure type mapping approach was applied on a land use/land cover classification generated from multispectral Ikonos data and LiDAR (Light Detection And Ranging) data in order to provide spatially detailed information about the building stock of the case study area of Dresden, Germany. The multi-parameter damage models FLEMOps (Flood Loss Estimation Model for the private sector) and regression-tree models have been adapted to the information derived from remote sensing data and were applied on the basis of the urban structure map. To evaluate this approach, which is suitable for risk analyses, as well as for post-disaster event analyses, an estimation of the flood losses caused by the Elbe flood in 2002 was undertaken. The urban structure mapping approach delivered a map with a good accuracy of 74% and on this basis modeled flood losses for the Elbe flood in 2002 in Dresden were in the same order of magnitude as official damage data. It has been shown that single-family houses suffered significantly higher damages than other urban structure types. Consequently, information on their specific location might significantly improve damage modeling, which indicates a high potential of remote sensing methods to further improve risk assessments.
Keywords: flood risk; flood loss estimation; FLEMOps; regression tree; remote sensing; land use/land cover classification; urban structure types flood risk; flood loss estimation; FLEMOps; regression tree; remote sensing; land use/land cover classification; urban structure types
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Gerl, T.; Bochow, M.; Kreibich, H. Flood Damage Modeling on the Basis of Urban Structure Mapping Using High-Resolution Remote Sensing Data. Water 2014, 6, 2367-2393.

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