French Drain Seepage Rate:
Seepage Rate or Flow per Foot of Trench:
Permeability:
Area Normal to Flow per Foot of Trench:
Flow Line Slope:
where,
Q
L = Seepage Rate or Flow per Foot of Trench,
K = Permeability,
A = Area Normal to Flow per Foot of Trench,
S = Flow Line Slope.
