Dr. Steve Rapp, 2005

The flow of
water over a weir can be computed

by:

• Q = 5.35LH3/2

•

where: Q = volume of water (ft3/s)

L = length of weir(ft)

• H = height of water over weir (ft)

Convert the
formula so that Q is in gallons/min and L

•and H are measured in
inches.