# Hydraulic Depth

on . Posted in Fluid Dynamics

Hydraulic depth, abbreviated as $$d_h$$, also called hydraulic mean depth, is the area cross-section of water in a pipe or channel divided by the wetting perimeter.

## Hydraulic Depth formula

$$\large{ d_h = \frac { A_c } { w } }$$
Symbol English Metric
$$\large{ d_h }$$ = hydraulic depth $$\large{ ft }$$ $$\large{ m }$$
$$\large{ A_c }$$ = area cross-section of flow $$\large{ ft^2 }$$ $$\large{ m^2 }$$
$$\large{ w }$$ = fluid top width $$\large{ ft }$$ $$\large{ m }$$