Calculate Underdrain System Discharge

Underdrain lateral spacing (S)

Length of the underdrain (L)

Recovery time of the system (t)

Depth from the natural ground elevation to the water table (c)

Result

drainage coefficient, q

mm/hr

Discharge, Qr

m^3/s

S - Underdrain lateral spacing
L - Length of the underdrain
t - Recovery time of the system
c - Depth from the natural ground elevation to the water table
q - Drainage coefficient
Qr - Discharge