Standard Article

140 Transport of Sediments

Part 12. Open-Channel Flow

  1. Walter H Graf,
  2. Mustafa S Altinakar

Published Online: 15 APR 2006

DOI: 10.1002/0470848944.hsa147

Encyclopedia of Hydrological Sciences

Encyclopedia of Hydrological Sciences

How to Cite

Graf, W. H. and Altinakar, M. S. 2006. Transport of Sediments. Encyclopedia of Hydrological Sciences. 12:140.

Author Information

  1. Ecole Polytechnique Fédérale, Laboratoire de Recherches Hydrauliques, Lausanne, Switzerland

Publication History

  1. Published Online: 15 APR 2006


A channel bed, made up of a granular material, is usually of a form which varies in space and time. The movement of the sediments, which make up the bed, represents a rather complex phenomenon. The hydrodynamic equations of the flow over a mobile bed are developed. The different modes of the transport of (noncohesive) sediments as bed load and as suspended load are presented. The formulae for the calculations of the transport of the total load are exposed, as well as their domain of application.


  • open-channel flow;
  • sediment transport as: bed load;
  • suspended-load;
  • total-load transport