Problem $1$:

Find the flow rate from a well penetrating fully in an unconfined aquifer. The well has a diameter of $22$ cm $.$ The water surface elevation in the well is $1320$ m $.$ The static water surface elevation is $1321\mathrm{.}5$ m $.$ The radius of influence of the well is $1080$ m $.$ The hydraulic conductivity of the aquifer is $0\mathrm{.}24$ m$/$day$.$ The bottom of the aquifer has an elevation of $1312$ m $.[10]$

Hint: For an unconfined aquifer the average thickness of the aquifer must be used. First find the thicknesses of the aquifer $($height from the bottom of the aquifer to water level$)$ at the two points where the equation is applied and then find the average value of the aquifer thickness. The drawdown is zero at the radius of the influence.