Data:Channel width: b$=0\mathrm{.}3[$m$].$Channel slope: i$=1/100$Flow rate Q$=12[$l$/$s$].$

n $=0,026$

$2\mathrm{.}9$ Calculate the critical height.

$2\mathrm{.}10$ Calculate the normal head.

$2\mathrm{.}11$ Classify the runoff profile.

$2\mathrm{.}12$ Determine a control point.

$2\mathrm{.}13$ At point x$=1[$m$],$ calculate the runoff head $($using the calculated distance$-$from$-$depth method$)$

$2\mathrm{.}14$ Plot the runoff head as a function of distance x$,$ along the length of the channel.

$2\mathrm{.}15$ Comment, including data, on what happens to the hydraulic slope as the channel

roughness change the channel roughness $($gravel bottom and steel bottom$).$

the hydraulic axis shall be determined using the "calculated distance from depth" method. "calculated distance from depth" method.