Flood discharge for a 100 year return period is calculated using Gumbel’s method.

The following data is available from the analysis:-

1) Mean of annual data series = 30000 m3/s

2) Standard deviation of annual data series = 300 m3/s

3) Frequency factor = 0.2

The estimated discharge for a flood of 100 year return period is (in m3/s up to 2 decimal places)