Figure below shows a $500$ m long levee made of compacted clay that impounds water in a reservoir as shown in the figure below. There is a $1$ m thick $($into the page$)$ sand seam continuing along the entire length of the levee at $10-$degree inclination to the horizontal, which connects the reservoir and the ditch. The hydraulic conductivity of the sand is $2\mathrm{.}6$ X $10*3$ cm$/$s$.$

a$)(10$ mark$)$ Determine the volume of water that flows into the ditch every day.

b$)(10$ mark$)$ Calculate piezometric head at Point A shown below $($m$)$

$($Not to scale$)$