Articles | Volume 22, issue 12
Hydrol. Earth Syst. Sci., 22, 6335–6355, 2018
https://doi.org/10.5194/hess-22-6335-2018
Hydrol. Earth Syst. Sci., 22, 6335–6355, 2018
https://doi.org/10.5194/hess-22-6335-2018

Research article 06 Dec 2018

Research article | 06 Dec 2018

Empirical and analytical methods to characterize the efficiency of floods to move sediment in a small semi-arid basin

Abdesselam Megnounif and Sylvain Ouillon

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Short summary
From a classification of river discharge, the effective or dominant discharge is the one whose class corresponds to the maximum sediment supply. The efficiency of the Wadi Sebdou (NW Algeria) was examined over 1973–2004. Two subdivisions allowed a correct distribution of frequencies and supplies of water and sediments. Their effective discharge, close to the half-load discharge, was compared to analytical values based on statistics and rating curves. Return periods were also explained.