xpdrainage 2016 Help Documentation XDH2016v1

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

V-Notch Weir: Specifications 

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.


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