Abstract

Mathematical simulation of erosion on upland areas is described. The erosion process is divided into rill and interill components according to the source of eroded sediment. The model provides estimates of sediment yield, predicts patterns of flow, delineates partial contributing areas and shows principal zones of deposition. Predicted values of sediment yield for individual storms over a 10-year period agreed well with experimental data for two agricultural watersheds. No concurrent data exist to verify the extent of deposition, or rill scour also predicted by the model.

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