Land grading is a leveling of the surface. Dirt from higher up is moved into the lower-lying areas to create a nice level surface to serve as the foundation for your project. Sometimes land grading may require you to move in additional dirt from somewhere else to complete the job.
Land may be graded flat or sloped. If you want to build a stone walkway, for example, you’ll likely want a nice flat surface on which to lay the stone. But if you want to channel rainwater away from your house, you’ll want to grade the land on a slope that runs down and away from your home.