Mathematics · Hydrology and Unit Hydrographs

The peak of a flood hydrograph due to a 4 hour duration isolated storm in a catchment is 300 m3/sec. The total depth of rainfall is 6.2 cm. Assuming an average infiltration loss of 0.3 cm/hour and a constant base flow of 50 m3/sec, the peak of the 4-h unit hydrograph of this catchment can be calculated as _______ m3/sec.