Fig. 4: Precipitation and streamflow trends in moderate flash flood susceptible sub-basins are increasing at all durations (1 h, 3 h, 24 h, 72 h). | npj Natural Hazards

Fig. 4: Precipitation and streamflow trends in moderate flash flood susceptible sub-basins are increasing at all durations (1 h, 3 h, 24 h, 72 h).

From: Drivers of flash floods in the Indian sub-continental river basins

Fig. 4: Precipitation and streamflow trends in moderate flash flood susceptible sub-basins are increasing at all durations (1 h, 3 h, 24 h, 72 h).

a The sub-basins that are classified as flash flood prone (moderate, high and very high) based on flashiness index and geomorphology. b The total number of sub-basins having different flash flood susceptibility that show a positive trend in streamflow of different durations. c The total number of sub-basins having different flash flood susceptibility that shows negative trend in streamflow of different durations. d The total number of sub-basins having different flash flood susceptibility that show increasing trend in precipitation of different durations. e The total number of sub-basins having different flash flood susceptibility that show decreasing trend in precipitation of different durations. The shaded part of the histogram shows the number of sub-basins showing a significant trend (p < 0.05). The trend analysis is done using Mann-Kendall Tau-b with Sen’s Method.

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