Allied & ICAR Exam Bank • ALLIED_0546 NAT • 2 Marks

Section 5: Irrigation and Drainage Engineering

Groundwater Wells and Pumps

Subtopic: Groundwater Wells and Pumps

Question Statement:

An unconfined aquifer has total porosity $n = 35\%$ and specific retention $S_r = 15\%$. The specific yield $S_y = n - S_r$ in percent is:

Answer Key:

20

Step-by-Step Solution & Explanation

$S_y = 35 - 15 = 20.0\%$.
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