Open Channel Design Tool

Calculate hydraulic parameters for rectangular and trapezoidal canal sections

Channel Geometry
Bottom width (B) of the channel
Horizontal:Vertical ratio (use 0 for rectangular)
Flow Parameters
Design flow rate (Q)
Channel bed slope (S₀)
Surface roughness coefficient
Safety margin above water surface
Calculation Options
Minimum area section for given discharge
Depth where Froude number = 1
Use Math.NET library (recommended)
Manning's Roughness Coefficient Reference
Channel Type Manning's n
Concrete lined (smooth)0.012 - 0.014
Concrete lined (rough)0.014 - 0.017
Brick in cement mortar0.015 - 0.017
Earth canal (clean)0.017 - 0.025
Earth canal (weedy)0.025 - 0.035
Natural stream (clean)0.030 - 0.040