Sediment yield from a catchment can be simulated using lumped and distributed models. However, for field applications, a reliable and simple method is required. The Universal Soil Loss Equation (USLE) is an empirical procedure developed by Wischmeier and Smith in 1965 from statistical analysis of erosion data from a large number of plot studies under different conditions. This model enables the planners to locate the potential erosion zones in a watershed and to try alternative combinations of cropping and management practices for effecting erosion control within specific limits.