Allied & ICAR Exam Bank • ALLIED_0401 NAT • 2 Marks

Section 4: Soil and Water Conservation Engineering

Hydrology and Runoff

Subtopic: Hydrology and Runoff

Question Statement:

A storm of $4\text{ hours}$ duration has uniform rainfall of $60\text{ mm}$. Total surface runoff produced from the catchment is $24\text{ mm}$. The $\Phi$-index $\Phi = \frac{P - R}{t}$ in mm/h is:

Answer Key:

9

Step-by-Step Solution & Explanation

$\Phi = \frac{60 - 24}{4} = \frac{36}{4} = 9.0\text{ mm/h}$.
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