Bar Resistance of Gravel-Bed Streams

by Gary Parker, (M.ASCE), Assoc. Prof.; Dept. of Civ. Engrg., Univ. of Alberta, Edmonton, Alberta, Canada,
Allan W. Peterson, (M.ASCE), Prof.; Dept. of Civ. Engrg., Univ. of Alberta, Edmonton, Alberta, Canada,


Serial Information: Journal of the Hydraulics Division, 1980, Vol. 106, Issue 10, Pg. 1559-1575


Document Type: Journal Paper

Discussion: Lau Y. Lim (See full record)
Discussion: Devi Rema (See full record)
Discussion: Bathurst James C. (See full record)
Closure: (See full record)

Abstract: Gravel-bed streams with bankfull channels of low sinuosity are considered. At flood stages, most of the resistance is grain resistance. Thus, depth-discharge relations can be predicted with existing method, although the inherent scatter is large. At lower stages, however, from resistance due to the presence of bars becomes increasingly important. Bar resistance is quantified empirically using data from rivers in Alberta, Canada, and the device of slope division of reach-averaged bed stress. Further reduction leads to predictive design graphs for depth-discharge relations. A numerical example is provided.

Subject Headings: Load and resistance factor design | Shoals | Stream channels | Floods | Bars (structure) | River bank stabilization | Grain (material) | North America | Canada | Alberta

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