CGRG Bibliography of Canadian Geomorphology
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Author : Bray, D.I.
Date : 1979
Title : Estimating average velocity in gravel-bed rivers
Publication : Journal of the Hydraulics Division, American Society of Civil Engineers
Issue : 105, No HY9, Proceedings Paper 14810
Page(s) : 1103-1122
Abstract
Basic data from 67 gravel bed river reaches in Alberta, Canada, were used to test widely adopted equations for computing average velocity in natural channels for the case of relatively high in-bank flows. Relations proposed by Cowan, Strickler, and Limerinos to estimate Manning's n were tested. The equations of the form presented by Keulegan and Lacey for computing average velocity also were evaluated. Computations based on these methods indicated that the Limerinos-Manning equation is the most acceptable approach for estimating average velocity in gravel-bed river reaches. The Lacey equation provides satisfactory results if no bed material data are available. The basic data also were used to develop best-fit relationships for computing Manning's n and the friction factor for gravel-bed river reaches. Particular emphasis was placed on an evaluation of the significance of bed material data in equations used to compute average velocity in gravel-bed river reaches
Bibliography of Canadian Geomorphology