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Calculate Peak Discharge (qp) By Tabular Hydrograph Method:
*Referencing TR-55, Chapter 5, this calculation is to be used for calculating the peak discharge using the Tabular Hydrograph method.
 
Calculation:
Designer/Checker:
   
Input:  
   
   
For Metric, all input units are converted for the calculation below then converted back for the output results. 
Unit peak discharge (qt - csm/in or cskm/mm)
Drainage area (Am - sq mi or sq km)
Runoff (Q - in or mm)

 
   
 
Output:
 
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Peak discharge, qp =
 
 
 
 



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