Problem $4(20$ pt$)$

Two parallel rivers are located $820m$ away from each other and the yearly rainfall of the area is

$1\mathrm{.}8\frac{m}{?}$ year with $15$ percent evaporation and hydraulic conductivity of the aquifer is $2\mathrm{.}1$

$(\frac{m}{?}$ day$).$ The water surface elevation above the base of aquifer for the river $1$ and river $2$ are

$16\mathrm{.}75m$ and $13\mathrm{.}25m$ respectively.

a$)$ Find the water divide.

b$)$ Find maximum water table elevation at the divide location

c$)$ Compare daily discharge per $650m$ at distance $x=450m$ from river $1$ if the evaporation

increases from $15\%$ to $25\%.$