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Calculate Stormwater Runoff Volume:
*Referencing TR-55, Chapter 6, this calculation is to be used for calculating the volume of runoff from a drainage area.
 
Calculation:
Designer/Checker:
   
Input:  
   
   
Note: All metric units are converted to US standard units for the equations below then converted back to metric units. 
 
Drainage area (Am - sq mi or sq km)
Runoff (Q - in or mm)
 
   
 
Output:
 
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Runoff volume, Vr =
 
 



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