Methodology of flood risk assessment from flash floods based on hazard and vulnerability of the river basin

Flood protection is a society-wide task. The basic rules of prevention in flood protection are stipulated by the regulation of a secondary right of the European Union—Directive of the European Parliament and Council 2007/60/EC on assessment and management of flood risks. The paper is focused on preliminary flood risk assessment of flash floods. The task was to obtain knowledge on the spatial variability of flood risk from flash floods and in doing so supplement a preliminary flood risk assessment already conducted in 2011 for the purpose of proposing suitable flood mitigation measures for reducing the risk found. Flood risk in this study is understood as a combination of flood hazard and vulnerability. The main part of the work is devoted to the proposal of a methodological approach for preliminary flood risk assessment of flash floods. Application of the proposed approach in Bodva river basin, southern Slovakia, is described in the results section.