4. The peak of flood hydrograph due to a 3-h duration isolated storm in a catchment is 270 cumecs, Total depth of rainfall is 5:9 cm. Assuming an average infiltration loss of 0:3 cm/h and a constant base flow of 20 cumecs, estimate the peak of 3-h unit

Q- The average rainfall for a 3 hour duration storm is 2.7 cm and the loss rate is 0.3 cm/hr. The flood hydrograph has a base flow of 20 m³/s and produces a peak flow of 220 m³/s. Find the peak of a 3-h unit hydrograph.

An effective rainfall of 2 hour duration produced a flood hydrograph peak of 200 m³/s. The flood hygrograph has a base flow of 20 m³/s. If the spatial average rainfall in the watershed for the duration of storm is 2 cm and the average loss rate is 0.4 cm/hour, the peak of 2-hour unit hygrograph (in m³/s-cm up to one decimal place) is