Water erosion, together with the accelerated development of anthropogenic activities, is one of the main reasons for soil degradation and changes in vegetation cover. Water erosion modelling studies associated with temporal and land use analyses enable us to assess the effects of changes in sediment production, which helps in decision-making. The aim of this work is to analyse the dynamics of sediment in relation to the flow of the Curicuriari River located in the state of Amazonas below the municipality of São Gabriel da Cachoeira.