Question

A rectangular channel 20 m wide flow with normal depth of 2 m with a slope of bed 1 in 6400. At a certain section, the flow depth is 3 m. How far upstream or downstream of this section will the depth be 2.6 m. Use step method and take only two steps. Take Manning's coefficient = 0.015. sketch and mention the profile.

Answer 1

The following data have been arranged in ascending order of magnitude 63,66,x,x+2,76,89and 103​