Agricultural Drainage and Salinity

A subsurface drainage system has a drainage coefficient $D_c = 12\text{ mm/day}$ ($0.012\text{ m/day}$). For a farm area of $A = 50\text{ ha}$ ($500,000\text{ m}^2$), the design drainage discharge $Q = A \cdot D_c / 86400$ in $\text{m}^3/\text{s}$ is (rounded off to three decimal places):