Answer Happy

(20 points) A rectangular canal has a channel slope of 0.015 with a bottom width of 2 m and a Manning's n of 0.03. The channel carries a flow of 25 m³/s. Answer the following: a. What is the normal depth of the flow in the channel? (5 points) b. What is the critical depth of the flow in the channel? (5 points) c. Classify the water surface profile of the channel if the depth of flow at the gaging station is 3.0 m (2 points) d. Compute the water surface slope at the gaging station (consider the y, ye and yo relationship for rectangular channel). (4 points) e. How far away from the gaging station is the depth of flow equal to 3.5 m? Does the depth occur upstream or downstream of the gaging station? (Assume the slope calculated in part c above is average slope between the gauging station and the location of 3.5 m water depth). (4 points)