What Size Rock Is Best For Erosion Control? Rocks should be less than one-third as wide as they are long. The depth of a riprap layer — stones used to control erosion — should be one-and-a-half to two times the diameter of the largest stone, but not less than 18 inches thick. What gravel is
What Are The Ways Of Controlling Erosion? cellular confinement systems. crop rotation. conservation tillage. contour bunding. contour plowing. cover crops. fiber rolls (also called straw wattles) gabions. What are the five ways of controlling erosion? Among the top methods of soil erosion control are reforestation, riprap, terracing, contour plowing and fencing. What are ways to