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Calculate Channel Flow (Q) for Trapezoidal Channel:
 
Calculation:
Designer/Checker:
   
Input:   
   

 
1st side slope, rise/run (s1 - ft/ft or m/m), enter 0.0 for vertical slope
2nd side slope, rise/run (s2 - ft/ft or m/m), enter 0.0 for vertical slope
Width of bottom (w - ft or m)
Depth of flow in channel (d - ft or m)
Slope of energy grade line, rise/run, (S - ft/ft or m/m)
Manning's Roughness Coefficient (n)
   

     
   
   
Output:   
 
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Width of the water surface (w) =
Area (A) =
Wet perimeter (Wp) =
Hydraulic Radius (R) =
Discharge, Q =
 
 
 
 


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