“…The results show that the addition of structures creates independent compartments in the bed level, which have a strong influence on bed surface armouring and stream morphodynamics: the consequence is that instantaneous transport intensities are unchanged, but peak solid discharge occurs more often and for shorter duration. This results in the same total transported volume over the long term, but reduced volume for a single transport event. It reaffirms the observation of pioneering authors of the mid-19th and early 20th century who conceptualized the possible sediment transport regulation function of check dams: in addition to stabilizing the stream-bed, check dams influence bed-load transport through a buffering effect, releasing frequently and in small doses what, in their absence, would be transported abruptly en masse during rare extreme events”
http://www.sciencedirect.com/science/article/pii/S0169555X16300812

 

Effects of check dams on bed-load transport and steep-slope stream morphodynamics   Original Research Article
Geomorphology, Available online 4 March 2016, Pages
Guillaume Piton, Alain Recking

 

 

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