This process is performed for every land use modeled in the subbasin. The slope slider bar controls the creation of additional HRUs based on the distribution of the selected soil types over different slope classes. This scale is used to eliminate minor slope classes within a soil on a specific land use area. As with the land use areas and soil areas, once minor slope classes are eliminated, the area of remaining slope classes is reapportioned so that 100% of the soil area is modeled.