Hydraulic Radius Design Equations Formulas Calculator

Open Channel Flow - Fluid Mechanics - Hydraulics

Solving for hydraulic radius.

hydraulic radius


area of sectin flow (A)
wetted perimeter (Pw)


area of sectin flow (A)
wetted perimeter (Pw)


hydraulic radius (Rh)

Other Units:

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Select an equation to solve for a different unknown

hydraulic radius
hydraulic radius hydraulic radius
area of section flow area of section flow
wetted perimeter wetted perimeter
hydraulic radius of a pipe hydraulic radius of a pipe

mean depth
mean depth mean depth
area of section flow area of section flow
top water surface width top water surface width

Froude number
Froude number Froude number
flow velocity flow velocity
acceleration of gravity acceleration of gravity
mean depth mean depth

References - Books:

U.S. Department of the Interior Bureau of Reclamation. Water Resources Research Laboratory: Water Measurement Manual. Washington DC, 2001.
Lindeburg, Michael R. 1992. Engineer In Training Reference Manual. Professional Publication, Inc. 8th Edition.
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