eflowcalc.dl10

eflowcalc.dl10(flows, datetimes, hydro_years, drainage_area)

Variability in annual minimum of 90-day daily flow.

Calculation Details

Compute the 90-day rolling mean flows. Take the minimum of these rolling means for each hydrological year. Calculate the standard deviation and the mean of these minimum values. Multiply the former by 100 and divide the result by the latter.