The peak of flood hydrograph due to a 3 h duration isolated storm in a catchment is 300 m3/s. The total depth of rainfall is 6. 3 cm. Assuming an average infiltration loss of 0. 3 cm/h and a constant baseflow of 18 m3/s, estimate the peak of the 3-hour unit hydrograph (UH) of this catchment. If the area of catchments is 420 km2, determine the base width of the 3-hour unit hydrograph by assuming it to be triangular.