Problem $3\mathrm{.}10$ modified. A spillway chute and the hydraulic jump stilling basin at the end of the chute are

rectangular in shape with a width of $80$ ft $.$ The incoming flow has a depth of $2\mathrm{.}60$ ft at a design discharge of

$10000$ cfs $.$ Within the basin are $20$ baffle blocks that are each $3\mathrm{.}0$ ft high and $3\mathrm{.}0$ ft wide.

$($a$)$ Assuming an effective coefficient of drag of $0\mathrm{.}6$ for the baffle blocks, based on the upstream velocity and

combined frontal area of the blocks, calculate the sequent depth $($ ft $)$ and compare with the sequent depth

$($ft$)$ without baffle blocks.

$($b$)$ What are the energy losses in ft in the basin with and without the blocks?