Fig. 1: Observed flood divides and extreme floods.
From: Extreme flooding controlled by stream network organization and flow regime
a,b, Normalized seasonal maxima versus chance of occurrence (Methods) for case studies lacking (ID 11402001, autumn; a) and exhibiting (ID 11946000, summer; b) a flood divide (red dot). c, Relative deviation from the flood divide of observed seasonal floods (grey dots linked by solid lines) sorted by their chance of occurrence. Inset shows ratios between highest observed and mean maximum seasonal flood for case studies (black dots) with (n = 27) and without (n = 7) flood divides. Centre line: median; box limits: 25th and 75th percentiles; whiskers: minimum and maximum values that are not considered outliers, that is, 1.5 x interquartile range.
