Question

In what intervals the top width of the notch lies?

(a) 1/2 to full water depth

(b) 3/4 to full water depth

(c) Full water depth

(d) 1/4 to full water depth

I got this question during an internship interview.

This intriguing question originated from Canal Falls in portion Canal Falls of Irrigation Engineering

Answer 1

The correct option is (b) 3/4 to full water depth

Explanation: Generally the number of notches is adjusted by hit and trial method. The width of the notch lies between 3/4 to full water depth above the sill of the notch.