eflowcalc.fh9

eflowcalc.fh9(flows, datetimes, hydro_years, drainage_area)

Frequency of events above Q75.

Calculation Details

Identify for each hydrological year the flow events above the 25th percentile of the whole daily flow record. Count the number of these flow events for each hydrological year. Calculate the mean of these number of events.