Erosion models fail to predict runoff and sediment yield accurately for large storms.
Conservation practices need to be effective for all storm sizes to control erosion. Different erosion models were tested using data from rainfall events in Mississippi. The models predicted runoff and erosion linearly with rainfall, but the accuracy varied. CREAMS and SWRRB were successful in predicting runoff and sediment yield for upland and flatland watersheds, while SWRRB and AGNPS were successful for the flatland watershed. None of the models predicted accurately for the terraced watershed, with the largest errors occurring during larger storms.