Hydraulic Radius 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)
= 0
= 0
wetted perimeter (Pw)
= 0
= 0


hydraulic radius (Rh)

Other Units:

Change Equation
Select to solve for a different unknown
hydraulic radius
hydraulic radiushydraulic radius
area of section flowarea of section flow
wetted perimeterwetted perimeter
hydraulic radius of a pipehydraulic radius of a pipe
mean depth
mean depthmean depth
area of section flowarea of section flow
top water surface widthtop water surface width
Froude number
Froude numberFroude number
flow velocityflow velocity
acceleration of gravityacceleration of gravity
mean depthmean 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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