GATE Civil Engineering (CE) 2020 Shift 2 Solved Paper

Question : 11 of 65

Marks: +1, -0

A triangular direct runoff hydrograph due to a storm has a time base of 90 hours. The peak flow of

60 {m}^{3} \/ {s}

occurs at 20 hours from the start of the storm. The area of catchment is

300 {km}^{2}

. The rainfall excess of the storm (in

{cm}

), is

Solution:

\;{1}/{2} × 90 × 60 × 3600=300 × 10^{6} × {x} × 0.01 {x}=3.24 {cm}

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