Question: Determine the local change in water surface elevation caused by a 0.2-ft-high obstruction in the bottom of a 10-ft-wide rectangular channel on a slope of

Determine the local change in water surface elevation caused by a 0.2-ft-high obstruction in the bottom of a 10-ft-wide rectangular channel on a slope of 0.0005 Mt. The rate of flow is 20 cfs and the unobstructed flow depth is 0.9 ft. See Fig. P7.10. Assume no head loss?

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