The Manning equation for open-channel flow velocity is V = (1/n) R^(2/3) S^(1/2), where R is hydraulic radius, S is channel slope, and n is Manning's roughness coefficient.
In V = (1/n) R^(2/3) S^(1/2), the hydraulic radius R is raised to the power 2/3 while the channel slope S is raised to the...
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