Table of Contents

How Much Is River Rock by the Ton?

The price of river rock per ton varies significantly, typically ranging from $20 to $75, depending on factors like size, type, color, location, and supplier. However, specialized or uniquely colored river rock can command prices exceeding $100 per ton.

Understanding River Rock Pricing

River rock is a popular landscaping material prized for its smooth, rounded appearance and natural aesthetic. While often purchased in smaller quantities for residential projects, bulk purchases by the ton are common for larger commercial landscapes, construction projects, and erosion control. Understanding the factors that influence the price of river rock is crucial for budgeting and making informed purchasing decisions.

Key Factors Influencing River Rock Costs

The following elements significantly impact the cost you’ll incur when buying river rock by the ton:

Rock Size: Smaller river rock (pea gravel size) is generally cheaper per ton than larger river rock. Larger rocks require more handling and specialized equipment for extraction and transport, thus increasing the price.
Rock Type and Color: Common gray or brown river rock is usually the most affordable. Less common colors like red, black, or multicolored blends often carry a premium due to their rarity and aesthetic appeal. Specific rock types with unique geological compositions can also command higher prices.
Location and Supplier: Prices fluctuate based on the proximity of the rock source to your location. Transportation costs are a significant factor. Local suppliers typically offer more competitive pricing than those requiring long-distance shipping. The supplier’s overhead and profit margins also play a role.
Quality and Cleanliness: River rock should be relatively clean and free of excessive debris like dirt, leaves, or other organic matter. Higher-quality rock that has been properly screened and processed will generally cost more.
Demand and Seasonality: Like many construction materials, the demand for river rock can fluctuate seasonally. Prices may be higher during peak landscaping seasons (spring and summer) when demand is at its highest.
Purchase Volume: Larger orders often qualify for bulk discounts. Suppliers are usually willing to negotiate prices for purchases of multiple tons of river rock.

Estimating Your River Rock Needs

Before requesting quotes, accurately estimate the amount of river rock required for your project. This will not only help you budget effectively but also ensure you receive the best possible pricing.

Calculating Volume and Weight

Measure the Area: Determine the length, width, and desired depth of the area you plan to cover with river rock. All measurements should be in feet.
Calculate Volume: Multiply the length, width, and depth to find the volume in cubic feet. For example, if you’re covering an area 10 feet long, 5 feet wide, and 0.5 feet (6 inches) deep, the volume is 10 x 5 x 0.5 = 25 cubic feet.
Convert to Cubic Yards: Divide the volume in cubic feet by 27 (since 1 cubic yard = 27 cubic feet) to convert it to cubic yards. In our example, 25 cubic feet / 27 = 0.93 cubic yards.
Estimate Weight: River rock typically weighs between 100-150 pounds per cubic foot. A rough estimate is 135 pounds per cubic foot. Multiply the volume in cubic feet by the weight per cubic foot to estimate the total weight in pounds. In our example, 25 cubic feet x 135 pounds/cubic foot = 3375 pounds.
Convert to Tons: Divide the total weight in pounds by 2000 (since 1 ton = 2000 pounds) to convert it to tons. In our example, 3375 pounds / 2000 = 1.69 tons.

This calculation provides an estimated tonnage. It’s always recommended to slightly overestimate your needs to avoid running short during the project.

Finding the Best River Rock Deals

Securing the best price requires research and comparison shopping. Don’t settle for the first quote you receive.

Tips for Saving Money on River Rock

Shop Around: Contact multiple suppliers, including local landscaping companies, quarries, and big-box home improvement stores. Request detailed quotes that include delivery charges.
Ask About Discounts: Inquire about bulk discounts, seasonal sales, or contractor pricing.
Consider Alternatives: If you’re flexible on color and type, ask about less expensive options. Sometimes, slightly different variations can offer substantial cost savings.
Buy in the Off-Season: Prices are often lower during the fall and winter months when demand is reduced.
Negotiate: Don’t be afraid to negotiate prices, especially for large orders.

River Rock FAQs: Your Essential Guide

Q1: What are the different sizes of river rock available?

River rock is available in a wide range of sizes, from pea gravel (1/4 inch to 3/8 inch) to cobblestone (2-10 inches) and even boulders (over 10 inches). The most common sizes used in landscaping are pea gravel, 1-3 inch, and 3-5 inch.

Q2: Is river rock environmentally friendly?

Yes, river rock is generally considered an environmentally friendly landscaping material. It’s a natural product that requires minimal processing and can help with soil erosion, water drainage, and weed suppression. However, consider the environmental impact of transportation when sourcing river rock from distant locations.

Q3: Can I use river rock for drainage?

Absolutely! River rock is excellent for drainage due to its size and permeability. It’s commonly used in French drains, dry wells, and around foundations to direct water away from structures.

Q4: How do I clean river rock that has become dirty or stained?

You can clean river rock using a garden hose with a high-pressure nozzle. For stubborn stains, use a mixture of water and mild detergent or a pressure washer. Avoid harsh chemicals that could harm plants or the environment.

Q5: What are the best uses for river rock in landscaping?

River rock is versatile and can be used for: pathways, driveways, garden borders, decorative ground cover, drainage solutions, erosion control, water features (ponds, streams), and around trees and shrubs.

Q6: How much river rock do I need for a specific project depth?

A ton of river rock will cover approximately 80-100 square feet at a depth of 3 inches. However, this can vary depending on the size of the rock and how tightly it is packed. Use the calculations described earlier for a more precise estimate.

Q7: What is the difference between river rock and crushed stone?

River rock is naturally rounded and smooth, while crushed stone is angular and jagged. River rock is typically used for decorative purposes, while crushed stone is often used for construction projects, such as roadbeds and drainage layers.

Q8: Can I use river rock in a fish pond?

Yes, but choose natural, untreated river rock that is free of harmful chemicals or coatings. Wash the rock thoroughly before placing it in the pond to remove any dirt or debris. Avoid using limestone in ponds with acidic water.

Q9: Does river rock attract pests?

River rock itself does not attract pests. However, the spaces between the rocks can provide shelter for insects and rodents. Maintaining good garden hygiene and keeping the area around the rocks clean can help prevent pest problems.

Q10: How do I prevent weeds from growing through river rock?

Use a weed barrier fabric underneath the river rock to prevent weeds from growing. Alternatively, regularly apply a pre-emergent herbicide to control weed growth. Mulch can also be used in conjunction with river rock to further suppress weeds.

Q11: What is the lifespan of river rock?

River rock is incredibly durable and can last for decades with minimal maintenance. It’s resistant to weathering and erosion, making it a long-lasting landscaping material.

Q12: Is it better to buy river rock in bulk or by the bag?

For large projects, buying river rock by the ton in bulk is significantly more cost-effective than buying it by the bag. Bagged river rock is convenient for small projects but can be very expensive for larger areas.