(Solved): 6 Water flows in a rectangular concrete channel 9.5 ft wide and 9 ft deep. The channel invert has a ...

6 Water flows in a rectangular concrete channel 9.5 ft wide and 9 ft deep. The channel invert has a slope of \( 0.10 \% \) and the applicable \( n \) value is 0.013 . The flow carried by the channel is 189 cfs . At an intersection of this channel with a canal, the depth of flow is 7.1 ft . Find the distance upstream to a point where normal depth prevails. Plot the surface profile.