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Hydrology & Irrigation

Infiltration Indices

During a stor...

Question

During a storm event in a certain period, the rainfall intensity is 3.5 cm/hour and the $ϕ - i n d e x$ is 1.5 cm/hour. The intensity of effective rainfall (in cm/ hour up to one decimal place) for this period is
2

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Solution

The correct option is A 2
$Rainfall intensity = 3.5 c m / h r$
$ϕ - i n d e x = 1.5 c m / h r$
$Intensity of effective rainfall,$
$= 3.5 - 1.5 = 2 c m / h r$

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