Broad Crested Weir Calculator
Broad Crested Weir refers to the flow measurement and regulation of water depth in rivers, canals and other natural open channels. Broad Crested Weirs are a robust structure used to measure the full width of the channel. A broad crested weir is normally a flat topped object which obstructs and extends across the entire channel.
q = Cd × b × h2 × (2g (h1 - h2)) 1/2
q = Water Flow Rate
Cd = Discharge Constant
b = Width of the Weir
g = Gravity (9.81 m/s2)
h1, h2 = Head 1 and Head 2 on the Weir