Water flows at 30 m3 /s in a rectangular channel of width 8 m and Manning’s n of XXXXXXXXXXIf the depth of flow at a channel section is 2 m and the slope of the channel is 0.002, classify the water...

Water flows at 30 m3 /s in a rectangular channel of width 8 m and Manning’s n of 0.030. If the depth of flow at a channel section is 2 m and the slope of the channel is 0.002, classify the water surface profile. What is the slope of the water surface at the observed section? Would the water surface profile be much different if the depth of flow was equal to 1 m? Explain.