Fig. 2. Maximum (red dots), mean (black dots), and minimum (blue dots) annual lake levels since 1845 (original data: Consorzio dell’Adda); and elevation of Piazza Cavour (gray dots, Comerci et al. 2007). Vertical red lines indicate the positive difference between maximum lake level and elevation of Piazza Cavour (e.g., flooding). The black line on the right represents the regulation range.