Hydraulics, Civil Engineering

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A rectangular channel, 20ft wide is shown. The channel consists of three reaches of different slopes. The channel has a roughness coefficient of n=0.015 and carries a discharge of 500 cfs
a) determine and neatly plot the normal and critical depths in each reach.
b) Sketch the gradually varying water profile extending from the sluice gate to the end of reach 3 assuming the following

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