Author(s): Gasper Rak; Mateja Skerjanec
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Keywords: No Keywords
Abstract: The increasing frequency of floods, combined with the increasing encroachment of water corridors and floodplains by humans, is turning floods into major disasters. In 2007, the European Union adopted the Floods Directive, which serves as a guideline for member states when legislating on the designation of flood hazard and risk areas. Despite the considerable human influence, current flood hazard mapping often neglects scenarios of extreme events. Stochastic land use changes caused by economic and social interests should be taken into account. Mitigation measures such as dams and levees, which are intended to reduce flood risk, can change the flow regime and shift the risk to downstream areas. The construction of dykes alters the retention capacity of floodplains and influences the attenuation of flood peaks and the propagation time. This article introduces the analysis of exceptional events in the assessment of flood hazards and risks with examples of man-made extreme flood events using detailed hydraulic modelling.
Year: 2024