Preliminary flood risk assessment: Case study of systematic processing of available or readily derivable information

Abstract

AbstractThe paper presents a methodological approach to preliminary flood risk assessment, which is conceptually based on the regional typing and integrated flood risk assessment. From the above conceptual bases, two key tasks arise: (1) establishing a basic spatial unit for preliminary flood risk assessment and (2) specifying its attributes in relation to the flood hazard and vulnerability (negative consequences), which correspond to assessment on a national scale. The basic spatial unit is defined as the municipality district. The methodological procedure of the preliminary flood risk assessment is based on an assessment of the impact of the district’s attributes on the potential of the flood hazard and negative flood consequences in the form of indicators, which are aggregated to subindices and indices. The flood risk potential index is determined as an aggregation of the flood hazard potential index and flood consequences potential index.