Question $3(7$ points$)$

For the reservoir at the top of the figure $($assuming it is $125$ feet long by $35$ feet wide$)$:

a$)$ Determine, via the Rational Method, whether the reservoir, if empty, will reach

the elevation shown during a $50-$year storm in Louisville, KY$,$ based on the

following characteristics of a drainage area flowing into it:

a$.$ Cover based on Belmill soil, of which:

i$.7$ acres are open space with $80\%$ grass cover

ii$.10$ acres are untreated cultivated land

iii. $3$ acres are paved

iv$.2$ acres consists of dirt road

b$.$ Time of concentration based on:

i$.$ Overland flow for $100$ feet from Elev. ${628}^{\text{'}}$ to Elev. $624\text{'},$ with

dense grass cover

ii$.$ Shallow concentrated flow for $1000$ feet $($unpaved$)$ to Elev. $554\text{'}$

iii. Stream flow via the channel in Question #$2$ carrying to a depth of

$3\mathrm{.}5$ feet for $2200$ feet to the top of the reservoir

Question $4(4$ points$)$

If the channel in Question #$2$ is a spillway from the top of a reservoir, determine

the depth of water at its entrance for the flow from Question $1,$ as well as $3$ other

flows.