Gravel patio plans should also include drainage plans as well. There are lots of qualities that pea gravel posses but one of the finest qualities of the gravel is that it keeps the ground from erosion. The erosion I always caused by the water. You should have a proper drainage plan in your mind, you must not hesitate in making the patio plane because the quality of the gravel is that it soaks the water inside and doesn’t allow water to reach the ground. That is reason why prevention should be part of gravel patio plans.