A rectangular concrete $(n=0\mathrm{.}015)$ open channel with base width of $6\mathrm{.}7-$feet is proposed with a new flood control project. Assuming that the design flowrate is

fixed at $380$ cfs:

Plot the elevation head for the channel $($Elevation head, $E_p=y)$

Plot the velocity head for the channel $($Velocity head, $E_K=\frac{V^2}{2}g=\frac{Q^2}{2}g{A}^2)$

Plot the specific energy curve for the channel $($specific energy $=E_P+E_K)$

Calculate the critical depth for this channel and compare with the graph you create.

Complete parts $1$ to $3$ in scratch paper and enter the critical depth in the box below. $($don$\text{'}$t include units$)$