Consider the trapezoidal channel with a bottom width of 20 ft, a slope of 0.0016, Manning’s n of 0.025, and side slopes of 2:1 (h:v) having a discharge of 500 cfs. Now a step rise of 1.0 ft is placed in the channel bottom. Determine the flow depth downstream of the bottom step assuming no transition losses. Does the water surface rise or fall at the step?
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