Aspects of sustainable development are crucial for Flood Risk Management (FRM). These aspects are relevant for the flood risk analysis, risk evaluation and risk-reduction. Two case studies are used to identify potential conflicts between different values: Lake Vanern and Gota alv River in Sweden and Elbe River in Germany. In both cases there are diverging interests of how to manage the systems, e.g. how to regulate water levels and use floodplains. The conclusion is that the relevant sustainability aspects must be identified, addressed and valued in the risk management process, especially for different risk-reducing measure options.