Open Channel Flow & Manning Velocity
Compute uniform flow for a ditch, swale, or channel cross-section.
Result
Area (sq ft)
6
Velocity (fps)
1.96
Discharge (cfs)
11.75
About this tool
Use Manning's n, slope, and cross-section to get flow depth, velocity, and discharge. Built for r/civilengineering ditch sizing and the persistent 'is my swale big enough' questions.
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