Question

Which type of dam design gives a wider choice of materials including earth-fill and rock-fill dams?

(a) Non-overflow dams

(b) Overflow dams

(c) Rigid dams

(d) Non-rigid dams

This question was addressed to me in an online quiz.

I want to ask this question from Categories of Dams topic in section General and Particular Dams of Irrigation Engineering

Answer 1

Right choice is (a) Non-overflow dams

To elaborate: Non-overflow dams are not designed to be overtopped. Sometimes it is combined together with the overflow dam to form a composite single structure. Overflow dams are designed to pass the surplus water over their crest and are often called as spillways.