Question

By constructing which structure we can help the fish in their migration?

(a) Scouring Sluices

(b) Silt Excluder

(c) Fish Ladder

(d) Divide Wall

The question was posed to me in an online interview.

This key question is from Diversion Head Works and its Components in section Diversion Head Works, Hydraulic Jump Usefulness in Irrigation Structure of Irrigation Engineering

Answer 1

The correct option is (c) Fish Ladder

The explanation: Before the start of monsoons the fish migrate to the upstream in search of warm water. So, therefore some provision is made to make some space available for them to travel. And this achieved by the construction of fish ladder as they provide the room for movement and also slows down the flow for easy traveling of fish.