$8\mathrm{.}3$ Compute the total flow rate under the dam shown in Figure $8\mathrm{.}2$ under the following conditions: $\backslash (\backslash$Delta h$=15\backslash$mathrm$\{$~m$\}\backslash ),$ the soil beneath the dam has a hydraulic conductivity of $\backslash (3\backslash$times $10^\{-3\}\backslash$mathrm$\{$~cm$\}/\backslash$mathrm$\{$s$\}\backslash ),$ and the length of the dam perpendicular to the section is $80$ m $.$

$8\mathrm{.}4$ Redraw the cross$-$section in Figure $8\mathrm{.}39$ to a scale of $\backslash (1$: $500(1\backslash$mathrm$\{$~cm$\}=5\backslash$mathrm$\{$~m$\})\backslash ),$ then draw a flow net that describes the seepage below this $\backslash (150-\backslash$mathrm$\{$m$\}\backslash )$ long concrete dam. Finally, compute the flow rate through this soil, expressed in liters per second, and the pore water pressure at Point A $,$ which is at elevation $122\mathrm{.}0$ m $.$

$8\mathrm{.}5$ Using the flow net from Problem $8\mathrm{.}4,$ develop a plot of seepage flow rate versus the water elevation in the reservoir. Consider reservoir elevations between $126\mathrm{.}1$ m and $135\mathrm{.}0$ m $.$