Kutters Formula

Q = a * c * [R * S]1/2

c = 41.65 + 0.00281/S + 1.811/n

1 + [41.65 + 0.00281/S] * n/R1/2

Input Data:

Area = ft²
Hydraulic Radius = ft
Mannings 'n' =
Slope = ft/ft
Results:

Flow = cfs
Velocity = ft/s