Ezzaouini M. A. auteur aut IRD Mahé Gil auteur aut IRD Kacimi I. auteur aut IRD Zerouali A. auteur aut IRD text journalArticle eng text/pdf reformatted digital access The evaluation and quantification of solids transport in Morocco often uses the Universal Soil Loss Model (USLE) and the revised version RUSLE, which presents a calibration difficulty. In this study, we apply the MUSLE model to predict solid transport, for the first time on a large river basin in the Kingdom, calibrated by two years of solid transport measurements on four main gauging stations at the entrance of the Sidi Mohamed Ben Abdellah dam. The application of the MUSLE on the basin demonstrated relatively small differences between the measured values and those expected for the calibrated version, these differences are, for the non-calibrated version, +5% and +102% for the years 2016/2017 and 2017/2018 respectively, and between -33% and +34% for the calibrated version. Besides, the measured and modeled volumes that do not exceed 1.78 x 10(6)m(3)/year remain well below the dam's siltation rate of 9.49 x 10(6)m(3)/year, which means that only 18% of the dam's sediment comes from upstream. This seems very low because it is calculated from only two years. The main hypothesis that we can formulate is that the sediments of the dam most probably comes from the erosion of its banks. specialized modeling MUSLE erosion solid transport dam Bouregreg Morocco MAROC 062 020 Descroix Luc ed. edt IRD Mahé Gil ed. edt IRD Laraque Alain ed. edt IRD Ribolzi Olivier ed. edt IRD Lacombe G. ed. edt IRD 12 7 art. 1882 [27] 2020 2073-4441 https://www.documentation.ird.fr/hor/fdi:010079429 10.3390/w12071882 2073-4441 [F A010085542] https://www.documentation.ird.fr/hor/fdi:010079429 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers20-08/010079429.pdf IRD - Base Horizon / Pleins textes 2020-09-17 2025-02-24 fdi:010079429 fre