Online civil calculator helps to calculate the flow underneath the dam for construction based problems.
It can be calculated by using formula, ΔQ = keq × Δh × Nf/Nd
Formula:
ΔQ = keq × Δh × Nf/Nd
where,keq = equivalent permeability,
Δh = total head drop,
Nf = total flow tubes,
Nd = total head drops