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Calculate Channel Flow Depth (d) for Circular Channel:
Note: Performs an iterative calculation to find the approximate depth of flow volume.
 
Calculation:
Designer/Checker:
   
Input:  
   

 
Width of top of channel (w - ft or m)
Flow volume in channel (Q - cfs or cms)
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) =
Flow Depth (d) =
 
 
 
 


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