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Soil erosion associated with non-point source pollution is viewed as a process of land degradation in many terrestrial environments. The question of nutrient loading of rivers and reservoirs, as it relates to sediment in general and farmland erosion in particular, is still a potentially important issue. This paper presents the suggestion of model for predicting the total nitrogen, phosphorus and potassium contents in reservoir bottom sediments. The model is based on the soil loss calculation using the Univer sal S...