Question
8. Ar iver flowing at 680 cfs has a wide rectangular channel with base of 60 ft, slope of 0.002, and Manning n = 0.016. A small dam is to be placed in the with height of 20 ft and depth of the actual flow depth at the toe of the dam is 0.35 ft. A concrete spillway apron extends downstream of the dam to keep any hydrau
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