Morera S.B. auteur aut IRD Condom Thomas auteur aut IRD Vauchel Philippe auteur aut IRD Guyot Jean-Loup auteur aut IRD Galvez C. auteur aut IRD Crave A. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Hydro-sedimentology development is a great challenge in Peru due to limited data as well as sparse and confidential information. This study aimed to quantify and to understand the suspended sediment yield from the west-central Andes Mountains and to identify the main erosion-control factors and their relevance. The Tablachaca River (3132 km(2)) and the Santa River (6815 km(2)), located in two adjacent Andes catchments, showed similar statistical daily rainfall and discharge variability but large differences in specific suspended-sediment yield (SSY). In order to investigate the main erosion factors, daily water discharge and suspended sediment concentration (SSC) datasets of the Santa and Tablachaca rivers were analysed. Mining activity in specific lithologies was identified as the major factor that controls the high SSY of the Tablachaca (2204 t km(2) yr(-1)), which is four times greater than the Santa's SSY. These results show that the analysis of control factors of regional SSY at the Andes scale should be done carefully. Indeed, spatial data at kilometric scale and also daily water discharge and SSC time series are needed to define the main erosion factors along the entire Andean range. specialized ANDES PEROU 062 17 11 4641-4657 2013 1027-5606 https://www.documentation.ird.fr/hor/fdi:010061384 10.5194/hess-17-4641-2013 1027-5606 [F B010061384] https://www.documentation.ird.fr/hor/fdi:010061384 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers17-08/010061384.pdf IRD - Base Horizon / Pleins textes 2014-02-05 2017-09-06 fdi:010061384 fre