The Universal Soil Loss Equation (USLE) helps predict how much soil will erode based on factors like crops, soil type, and rainfall. By comparing predicted erosion with acceptable levels, planners can make decisions to control erosion. The USLE considers six main factors that affect erosion rates, and data from many studies help estimate these factors for specific areas in the US. The equation is useful for farms, construction sites, and other areas prone to erosion, but it doesn't predict sediment deposits or erosion in streams.