Given an irrigation regulator with the following properties:
The difference between U/S and D/S water levels (AH) = 0.15m
The approach velocity (Va)=0.7 m/sec The tail water depth (y) = 2.1m The water way width (S) = 6m Use the acceleration of gravity (g)=9.81m/sec²
Then the discharge (Q) of this regulator is approximately equal to: