Calculating Shear Stress at Channel-Overbank Interfaces in Straight Channels with Vegetated Floodplains
Publication: Journal of Hydraulic Engineering
Volume 126, Issue 12
Abstract
A series of eight experiments was performed in a physical model of a compound channel to quantify the apparent shear stress at the interface between a main channel and both a vegetated and unvegetated floodplain. Data were analyzed using a turbulence-based method for calculating the apparent shear stress as a function of the fluctuation in channel velocities. A predictive expression was developed to permit the estimation of the apparent shear stress at the boundary of a main channel and floodplain as a function of the bed shear stress, average velocity, and depth in both the main channel and floodplain and the blockage caused by floodplain vegetation.
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Information & Authors
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Published In
Journal of Hydraulic Engineering
Volume 126 • Issue 12 • December 2000
Pages: 929 - 936
History
Received: Nov 5, 1999
Published online: Dec 1, 2000
Published in print: Dec 2000
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