Question

Which of the following guideline is incorrect for the selection of a suitable site for a reservoir?

(a) The geological formation should be such that it entails minimum leakage

(b) The cost of the dam is a controlling factor

(c) Too much silt-laden tributaries should be avoided as far as possible

(d) The reservoir basin should have a shallow wide opening in the valley

This question was addressed to me in unit test.

This intriguing question originated from Reservoir Losses in portion Reservoirs and Dam Reservoirs Planning of Irrigation Engineering

Answer 1

Right choice is (d) The reservoir basin should have a shallow wide opening in the valley

The explanation: The site should be such that a deep reservoir is formed because of lower land cost per unit of capacity, less evaporation loss, and less possibility of weed growth as compared to shallow ones. The basin should have a narrow opening so that the length of the dam is minimum.