The project flow rate $($discharge$)$ which is determined according to the river efficiency, is Q$=10$ m$3/$s$.$ According to the selected coating type, the Manning coefficient was determined as n $=0\mathrm{.}02$ and the channel base slope from the topographical features of the land was determined as I$0=0\mathrm{.}0009.$ Project flow will be transmitted through a rectangular cross$-$section channel. Determine the channel width and water depth with the most appropriate section concept.