Description

A rectangular channel is $10$ m wide and carries a discharge of $165m\frac{3}{s}.$ It is laid at a slope of $0\mathrm{.}005$ at a specific section along the length. The depth of flow is $5$ m $.$ How far upstream $($or downstream$)$ will the depth be $1)4\mathrm{.}8$ m$,2)4\mathrm{.}5m,3)4\mathrm{.}3$ m