Allied & ICAR Exam Bank • ALLIED_0420 MCQ • 1 Mark

Section 4: Soil and Water Conservation Engineering

Hydrology and Runoff

Subtopic: Hydrology and Runoff

Question Statement:

The $W$-index differs from the $\Phi$-index because the $W$-index explicitly subtracts:

Options:

  • (A) Initial abstraction ($I_a$) including depression storage and interception
  • (B) Evapotranspiration from deep aquifers
  • (C) Channel seepage
  • (D) Baseflow volume

Answer Key:

A

Step-by-Step Solution & Explanation

The $W$-index is defined as $W = \frac{P - R - I_a}{t_r}$, separating initial abstraction from actual infiltration.
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