online_vee_notch1: Calculation of discharge
through a fully contracted Vnotch weir

Formula:
Head H on the weir, in m [or ft]
Width B of the channel, in m [or ft]
Side width b, in m [or ft]
Angle θ in radians
C_{e} and k are function only of θ (in degrees)
Discharge Q in L/s [or cfs]
For a fully contracted Vnotch weir: H/B ≤ 0.2
Partially contracted 90° Vnotch weir calculator
See USBR Manual for general methodology

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190419 21:16:37 ].
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