Towards automatic calibration of 2-dimensional flood propagation models

Abstract Hydraulic models for flood propagation description are an essential tool in many fields,e.g. civil engineering, flood hazard and risk assessments, evaluation of flood controlmeasures, etc. Nowadays there are many models of different complexity regarding the 5 mathematical foundation and spatial dimensions available, and most of them are com-paratively easy to operate due to sophisticated tools for model setup and control. How-ever, the calibration of these models is still underdeveloped in contrast to other modelslike e.g. hydrological models or models used in ecosystem analysis. This has basicallytwo reasons: first, the lack of relevant data against the models can be calibrated, be- 10 cause flood events are very rarely monitored due to the disturbances inflicted by themand the lack of appropriate measuring equipment in place. Secondly, especially thetwo-dimensional models are computationally very demanding and therefore the use ofavailable sophisticated automatic calibration procedures is restricted in many cases.This study takes a well documented flood event in August 2002 at the Mulde River in

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