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{{Plainlist|1=Where:
{{Plainlist|1=Where:
*L = length of swale in m
*'L' = length of swale in m
*Q<sub>p</sub> = peak flow of the storm to be controlled, in m<sup>3</sup>/s
*'Q<sub>p</sub>' = peak flow of the storm to be controlled, in m<sup>3</sup>/s
*m = swale side slope (dimensionless)
*'m' = swale side slope (dimensionless)
*S = the longitudinal slope (dimensionless)
*'S' = the longitudinal slope (dimensionless)
*n = Manning's coefficeint (dimensionless)
*'n' = Manning's coefficeint (dimensionless)
*b = bottom width of trapezoidal swale, in m.}}
*'b' = bottom width of trapezoidal swale, in m.}}