Soil erosion was studied in Dijo watershed, Ethiopia, using GIS and a soil loss equation. The researchers found that most of the area had very low or low erosion due to tree planting and terraces. However, some parts had moderate erosion because of soil type and lack of vegetation. They estimated 43,762 tons of sediment yield per year. To reduce erosion, they recommend terracing, inter-cropping, and other conservation methods tailored to slope, soil type, and land use. The study shows that using GIS and the soil loss equation is effective for mapping soil erosion in watersheds.