Question: For an open channel, what changes must be made to the Manning equation for uniform flow in order to apply it to non- uniform flow?

For an open channel, what changes must be made to the Manning equation for uniform flow in order to apply it to non- uniform flow? A. It cannot be used with non-uniform flow. B. It is integrated with respect to the hydraulic radius and energy gradient to reflect velocity changes along the channel length. OC. No changes are required. D. Velocity, hydraulic radius, and slope are replaced with man velocity, mean hydraulic radius, and energy gradient

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