Question

Which is the ideal condition for a reservoir?

(a) When general water is much above the top reservoir level

(b) When general water table is much below the minimum water level

(c) When general water table and top water level of the proposed reservoir are almost same

(d) When general water table is slightly above the top reservoir level

This question was addressed to me during an internship interview.

The doubt is from Geological Investigations and Silting topic in division Dams and Reservoirs of Engineering Geology

Answer 1

The correct choice is (c) When general water table and top water level of the proposed reservoir are almost same

The explanation: The general water table of the area and the top water level of the proposed reservoir are almost the same. This is an ideal situation ensuring a no loss no gain condition but generally not available on a large scale.