Problem $9$

A permeability test was carried out in a confined aquifer with the

piezometric level before pumping is $2\mathrm{.}18m$ below the ground

surface. The aquiclude has a thickness of $5\mathrm{.}7m$ measured from

the ground surface and the confined aquifer is $7\mathrm{.}6m$ deep until it

reaches the aquiclude $($impermeable layer$)$ at the bottom. At a

steady pumping rate of $15\mathrm{.}6$cu$.$m$/$ hour the drawdown in the

observation wells were respectively equal to $1\mathrm{.}62m$ and $0\mathrm{.}47m.$

The distances of the observation wells from the center of the test

well were $15m$ and $32m$ respectively.

$($a$)$ Compute the depth of water at the farthest observation

well.

$($b$)$ Compute the coefficient of permeability. in $\frac{m}{s}$

$($c$)$ Compute the transmissivity. in sq$.$m $/$s