Free Online Segmented, Variable Depth, Irregular Broad-crested Weir Flow Calculator

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Irregular Broad-crested Weir Flow Calculator

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Set units:
Weir points +/-
Station Elevation Ponding Height Incremental Flow Cumulative Flow

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Notes

Weir Equation
q = if (length = 0) then 0 else if (slope=0) then cw*length*d01.5 else cw/(2.5*slope) * (d02.5 - d12.5) where d1 and d0 are always positive or zero
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