Mean Depth
Mean depth, abbreviated as \(h_m\), is the average water depth in a stream channel or conduit computed by dividing the cross-section area by the surface width.
Mean depth formula |
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\(\large{ h_m = \frac{ A_c }{ T } }\) \(\large{ h_m = \frac{ v^2 }{ g \; Fr^2 } }\) |
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Symbol | English | Metric |
\(\large{ h_m }\) = mean depth | \(\large{ ft }\) | \(\large{ m }\) |
\(\large{ A_c }\) = area cross-section of flow | \(\large{ ft^2 }\) | \(\large{ m^2 }\) |
\(\large{ Fr }\) = Froude number | \(\large{ dimensionless }\) | |
\(\large{ g }\) = gravitational acceleration | \(\large{ \frac{ft}{sec^2} }\) | \(\large{ \frac{m}{s^2} }\) |
\(\large{ T }\) = top of water surface width | \(\large{ ft }\) | \(\large{ m }\) |
\(\large{ v }\) = velocity of flow | \(\large{ \frac{ft}{sec} }\) | \(\large{ \frac{m}{s} }\) |