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An appropriate role for inherent uncertainties 

Actual flood risk management is surrounded by a multitude of uncertainties. Changes in flood regimes (mean annual discharges, maximum discharges, and their timing) show a mixed pattern across Europe. However, even in those cases where a trend in flow regime is visible, it is difficult to separate a potential climate change signal from other drivers of change (land use, infrastructure). There are indications that the increase in reported flood damage should mainly be attributed to economic development as well as to better reporting, and that an increased flood frequency because of climate change remains uncertain. Nevertheless, climate change deserves priority, because the lead-time for measures to adapt is often very long. Scenarios and foresight studies are recommended as tools. Scenarios must differ by the main uncertainties, and the uncertainties communicated in a suitable way (Hall, et al., 2014).