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TR-55 Channel Flow

This number represents the channel flow time computed for each column of channel flow data. Flow velocity for this flow time is computed as:



where



  Tc = Time of concentration (hr.)
  Lf = Flow length (ft)
  V = Average velocity (ft/sec.)
  R = Hydraulic radius (ft)
  Sf = Average slope (ft/ft)
  n = Manning’s roughness value
Parent topic: Time of Concentration