Question

Specific yield of unconfined aquifer indicates __________

(a) Water capacity

(b) Volume of water

(c) Water retained

(d) All of the mentioned

This question was addressed to me in an international level competition.

The above asked question is from Well Hydraulics in chapter Well Hydraulics of Geotechnical Engineering I

Answer 1

The correct answer is (a) Water capacity

To explain I would say: Specific yield is an indication of the water yielding capacity of an unconfined aquifer.