Extracted text: A uniform flow occurs at a depth of 3.85m in a rectangular channel 11.5m wide with n=0.013 laid on a slope of 0.00274. What will be the minimumheight "h" of a smooth hump, extending the entire width of the channel which can be built in the floor of this channel to produce critical depth at the hump. Use Manning's Formula. Figure 1: E.G.L.