1.

A triangular direct runoff hydrograph due to a storm has a time base of 90 hours. The peak flow of 60 m3/s occurs at 20 hours from the start of the storm, the area of catchment is 300 km2. The rainfall excess of the storm (in cm), is

A. 2
B. 3.24
C. 5.4
D. 6.48
Answer» C. 5.4


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