$8\mathrm{.}10\mathrm{.}1.$ A horizontal rectangular stilling basin $($U$.$S$.$B$.$R$.$ Type III$)$ is used at the outlet of a spillway to dissipate energy. The spillway discharges $800f\frac{t^3}{s}$ and has a uniform width of $80$ ft $.$ At the point where the water enters the basin, the velocity is $20f\frac{t}{s}.$ Compute

a$.$ the sequent depth of the hydraulic jump,

b$.$ the length of the jump,

c$.$ the energy loss in the jump,

d$.$ the efficiency of the jump defined as the ratio of specific energy after to the specific energy before the hydraulic jump.

THE CORRECT ANSWES ARE;

a$.$ d$2=3\mathrm{.}5$ ft

b$.$ L$=8\mathrm{.}1$ ft

c$.$ E$=3\mathrm{.}9$ ft

d$.$ Efficiency $=0\mathrm{.}54$ or $54\%$