Fig. 5From: Evaluation of the high-energy flood of mid-July 2021 as a morphologic driver in the anthropogenically developed Ahr Valley, Germany, in interaction with infrastructuresEvolution and distribution of shoals in focus areas 1 to 3. Visible river shoals were mapped, their surface area computed and summed up per focus area before being divided by the area of the river in the focus areaBack to article page