Question

A groundwater basin consists of $10k{m}^2$ area of plains. The maximum groundwater table fluctuation has been observed to be 1.5 m. Consider specific yield of the basin as 10%. What is the available groundwater storage in million cubic metres?

• A. 1.0
• B. 1.5
• C. 2.5
• D. 2.0

Answer 1

The correct option is B 1.5

Available ground water storage

$=10\times ({10}^3{)}^2\times 1.5\times \frac{10}{100}$

$=1.5\times {10}^6{m}^3$

$=1.5m^3$