eflowcalc.fl2

eflowcalc.fl2(flows, datetimes, hydro_years, drainage_area)

Variability in annual low-flow pulse count (below 25th percentile).

Calculation Details

Identify for each hydrological year the flow events below the 25th percentile of the whole daily flow record. Count the number of these flow events for each hydrological year. Calculate the standard deviation and the mean of these number of events. Multiply the former by 100 and divide the result by the latter.