ABSTRACT
If a dam failure should occur, the released water could create extreme flow conditions in the river valley downstream. The numerical simulation of such events is mandatory to establish dam break flood risk maps and management plans. In contrast to calculations regarding e.g. 100- year floods no calibration of these hydraulic-numerical models are possible because these are in most of the cases hypothetical events. To get a better understanding about the accuracy of numerical models for dam break flood wave routing and the reliability of their results the paper presents detailed characteristics of four sets of numerical models each representing two models of the same river reach and a comparison of their results.
