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Calculate Travel Time or Time of Concentration for Channelized or Shallow Concentrated Flow:
Calculate the travel time or time of concentration for channelized flow or for shallow concentrated flow.  
 
Calculation:
Designer/Checker:
   
Input:  
   
Note: All metric units are converted to US standard units for the equations below then converted back to metric units. 
 
Channel Length (L - ft or m)
Channel Velocity (V - fps or mps)*
*Velocity from NRCS method for ditch flow velocity or if channelized flow using the mannings equation.
 
   
 
Output:
 
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Tt (min) =
Tt (hr) =
 
 
 
 
 



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