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Hydrology & Irrigation

Methods of Maximum Flow Calculation-Part-2

A catchment o...

Question

A catchment of area 200 ha has a runoff coefficient 0.5. A storm of duration larger than the time of concentration of the catchment and of intensity 3.6 cm/h causes a peak discharge of

A

5 m^{3} / s

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B

10 m^{3} / s

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C

100 m^{3} / s

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D

360 m^{3} / s

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Solution

The correct option is B $10 m^{3} / s$
As per rational formula, the peak value of discharge is expressed as
$Q_{p} = AIR / 360$

$= \frac{200 \times 3.6 \times 10 \times 0.5}{360}$

$= 10 m^{3} / s$

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