For the soil profile shown in Fig. $1$ note the variation of total head with depth and values of porewater pressure at the top of the clay layer and at the bottom of the silt layer.

a$.$ Locate the water table

At point A compute:

porewater pressure,

c$.$ total vertical stress,

effective vertical stress,

c$.$ coefficient of permeability in ft$/$day$,$

f$.$ and flow rate in $f\frac{t^3}{?}$ day$/\frac{?}{f{t}^2}.$

Figure $1$

Useful information

${}_w=10k\frac{N}{m^3}=62\mathrm{.}4l\frac{b}{f}{t}^3$

$8^{\text{'}}3\mathrm{.}2m$