Risk-based evaluation of flood defense measures with different effect on flood protection

Modern flood protection strategies / -concepts are based on the integration and combination of flood protection measures with different effects on flood protection. Natural retention, technical flood protection or flood prevention are different types of flood protection measures. The effect of these types of measures extends over different areas in the catchment. In order to make the effectiveness comparable a single criterion is required. The computer-based decision support system ProMalDes (Protection Measure against Inundation Decision Support) uses the integrated flood risk as a basis for the assessment of existing flood protection. The decision criterion bases upon the effect of flood protection measures on the integrated flood risks. Thus, it supports significantly the decision-making process in the development of flood protection concepts.