Multiple choice

A wall of diameter 20 cm fully penetrates a confined aquifer. After a long period of pumping at a rate of 2720 litres per minute, the observations of drawdown taken at 10 m and 100 m distances from the centre of the wall are found to be 3 m and 0.5 m respectively. The transmissivity of the aquifer is

  1. 676m2 /day

  2. 576 m2 /day

  3. 526 m2 /day

  4. 249 m2 /day

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation