River Rock Calculator

For decorative landscaping, 2-3 inches is sufficient. For walkways, 3-4 inches. For driveways or areas with heavy foot traffic, 4-6 inches is recommended. For weed suppression, at least 2-3 inches with landscape fabric underneath.

River rock typically weighs 2,500-3,000 lbs per cubic yard (1.25-1.5 tons). The exact weight depends on the rock size and moisture content. Our calculator uses an average of 2,700 lbs/yard for accurate estimates.

At 2 inches deep, one ton covers approximately 80-100 square feet. At 3 inches deep, it covers 60-70 square feet. Coverage varies based on rock size—smaller rocks pack tighter, larger rocks have more gaps.

Yes! Landscape fabric is highly recommended under river rock. It prevents weeds from growing through, keeps the rock separate from soil, and stops rocks from sinking into the ground over time. Use heavy-duty woven fabric for best results.

Small (1/2-1"): Best for pathways, gardens, and around plants. Medium (1-2"): Most popular for general landscaping and drainage. Large (2-4"): Used for erosion control, dry creek beds, and accent features. Extra large (4-8"): Boulders for retaining walls and focal points.

River rock requires minimal maintenance. Rake occasionally to redistribute rocks, remove leaves and debris with a leaf blower, hose down to remove dust, and spot-treat any weeds that appear. Top up with fresh rock every 2-3 years to maintain appearance.

Yes! River rock is excellent for drainage applications. Use 1-2" river rock in French drains, around foundation perimeters, and in rain gardens. The gaps between rocks allow water to flow freely while preventing soil erosion.

Always add 5-10% extra for waste, uneven surfaces, and settling. For irregular-shaped areas or first-time projects, use 10-15%. Our calculator includes a waste factor option to help you order the right amount.