Calculate Manning Roughness Coefficient

n = Manning's Roughness Coefficient R = Hydraulic Radius S = Line Slope V = Flow Velocity

Calculate Flow Velocity

V = Flow Velocity R = Hydraulic Radius S = Line Slope n = Manning's Roughness Coefficient

Calculate Hydraulic Radius

R = Hydraulic Radius V = Flow Velocity n = Manning's Roughness Coefficient S = Line Slope

Calculate Line Slope

V = Flow Velocity n = Manning's Roughness Coefficient R = Hydraulic Radius S = Line Slope