Repair any potholes in your gravel driveway with new gravel before the winter arrives. Using a tractor's grader blade attachment, rake the driveway to create a crown in the middle. The height of the crown should be one inch for every three or four feet of driveway length. Add new material if necessary by using the tractor's blade to rake gravel from the perimeter into the middle. For the first two to four years, you'll need to add new gravel. Make sure you have snow removal equipment, such as a snow blower or snow shovel, on hand for the next snowy season.