Using HEC$-$RAS, find the distance from the discharge point of

trapezoidal channel into a reservoir to the point where the

channel has normal flow depth. The flow depth at the discharge

is $9$ inches. The channel flow rate is $1$ cfss$,$ its Manning's $"$n$"$ is

$0\mathrm{.}013,$ its bottom is $2$ feet wide, its longitudinal slope is $0\mathrm{.}1\%,$ and it

has IH:$1$V side slopes. $(2$ pts$.)$