V-Notch Weir flow is calculated using the following formula:
Cd = Coefficient of Discharge
vang = internal angle of the V (degrees)
H = height of water above weir invert
Angle of V - Enter the angle of the V in degrees.
Coefficient of Discharge - Enter the discharge coefficient of the weir. A default value of 0.59 is given.
Invert Level - The invert level of the Weir.