Allied & ICAR Exam Bank • ALLIED_1241 NAT • 2 Marks

Section 5: Irrigation and Drainage Engineering

Well Hydraulics and Groundwater

Subtopic: Aquifer Storativity

Question Statement:

An unconfined sandy aquifer of area 10 km$^2$ has a specific yield $S_y = 0.15$. If the water table drops by $2.0\text{ m}$ across the aquifer during a pumping season, the volume of water drained from storage in million cubic meters (MCM) is:

Answer Key:

3.0

Step-by-Step Solution & Explanation

$V = A \times \Delta h \times S_y = (10 \times 10^6\text{ m}^2) \times 2.0\text{ m} \times 0.15 = 3.0 \times 10^6\text{ m}^3 = 3.0\text{ MCM}$.
← Previous (ALLIED_1240) Next (ALLIED_1242) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test