WMS:MODRAT Time of Concentration

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Enter the time of concentration of each subarea, in minutes. Normally, this number is between 5 and 30 minutes. LACDPW has developed several regression equations to compute the time of concentration of a subarea, which are embedded in WMS. The Compute Regression Tc button will take you to the Time Computation dialog where you can compute Tc using the LACDPW regression equations.


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