Fig. 5: Combined increases in local deviation frequency, and percentages of land area with local deviations in selected regions.

The classification is based on local streamflow and soil moisture deviation frequency increases shown in Fig. 3, and it pools together both minor and major increases (represented by ‘+(+)’ in the legend). Computing the percentage of land area with local deviations (Fig. 1c) was performed within each region, and the median and upper end of pre-industrial variability (Fig. 1d) were also computed regionally. Selected region outlines are derived from the HydroBASINS data set⁹⁷.