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A trapezoidal channel is being designed using a grass-legume mixture lining with a stand of 4...

A trapezoidal channel is being designed using a grass-legume mixture lining with a stand of 4 to 5 in. The bottom width of the channel is 20 ft and the bottom slope is 0.005. Side slopes are 3:1 (h:v). What is the maximum allowable discharge for this lining? What would be the change in maximum allowable discharge if a grass-legume mixture lining with a stand of 6 to 8 in were used

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