V-Notch Weirs
V-Notch weirs are defined in Bentley StormCAD by the following equation:
| Q | = | flow (cfs, cms) | |
| C | = | coefficient of discharge (US, SI forms) | |
| g | = | gravitational constant | |
| è | = | angle of notch (degrees) | |
| H | = | head above the bottom of the notch (ft, m) |
H is measured from the water level to the bottom crest of the weir.