$($Manning equation$)($a$)$ Determine the maximum flowrate possible for the creek shown in the figure below if it is not to overflow onto

the floodplain. The creek bed drops an average of $5\mathrm{.}55f\frac{t}{h}$alf$-$mile of length. $($b$)$ Determine the flowrate during a flood if the depth is $8$

ft$.$

$($a$)$

$f\frac{t^3}{s}$

$($b$)$

$-f\frac{t^3}{s}$