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Yellowstone River Rock in Montana

Also sold as River Rock

Also known as: river rock, round rock

Yellowstone River Rock gives Montana planting areas and drainage details a smooth, rounded finish with varied earth-tone color.

  • Size: 1 inch to 3 inches
  • Type: Smooth, naturally rounded stones
  • Color: Tans, grays, browns and occasional reds

From $793.00 for 1 ton, delivery included

Larger loads cost less per ton: 500 tons is $61,015.00 ($122.03 per ton). Pick any quantity below for a delivered price.

Free delivery included

Free delivery anywhere in Montana

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Weekday delivery, earliest Sep 25

Ordered eight tons of river rock for a decorative bed along the front of a client's house near Stanford. Mixed sizes look natural against the foundation plantings, and it settled in nicely with no shifting after a windy spring. Montana Rock Supply's price beat the landscape supplier we used to order from.

Keith M. · Verified Buyer

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Everything You Need to Know About Yellowstone River Rock

Size and Grading

Size
1 inch to 3 inches
Type
Smooth, naturally rounded stones
Color
Tans, grays, browns and occasional reds

East of the divide, Montana gumbo can stay slick after moisture and then harden as it dries. Valley ground farther west may drain more freely, but deep frost still makes grade and the groundwork beneath a finished landscape area important. Yellowstone River Rock belongs at the surface, where its naturally rounded, water-worn appearance can be seen.

Use this stone for planted borders, water-feature margins, or a managed drainage detail rather than a compacted base. The rounded form leaves it loose instead of locking together like crushed material. Its earth-tone mix can sit comfortably against soil, plantings, and hardscape. Where runoff crosses the property, establish the drainage route first, then place Yellowstone River Rock as the visible finish along that route to help cover soil exposed to runoff. That placement also keeps the rounded stone where routine landscape care can reach it.

Quickly Calculate How Much You Need

Material: Yellowstone River Rock

Need help figuring out the right amount? We can help!

Call or text us at our contact form and we'll help you calculate the right quantity for your project.

Not sure how much you need? The River Rock Calculator has depth guides, coverage charts and worked examples for this material.

Common Uses

Landscaping & Garden Design

Set off planting beds, garden edges, and feature areas with river rock. Place it at tree bases, beside fencing, or in place of natural mulch to bring varied texture and color to the yard.

Drainage Solutions

Because the stones are rounded, water can move freely through river rock. It works well in French drain runs, dry washes, downspout outlets, and similar drainage work, helping manage erosion and move runoff away from foundations and low areas.

Water Features & Ponds

Use river rock to finish pond edges, waterfall areas, and fountain bases. Its worn-smooth faces and earth-toned colors give water features a natural appearance.

Decorative Accents

Use river rock to define walk edges, fill rock gardens, or finish xeriscape spaces with a clean look. Native plants, pavers, and stepping stones can be arranged alongside it for a unified yard design.

Why Choose Yellowstone River Rock

Durability

Unlike organic mulch, river rock does not rot away or lose its color as it sits in the landscape. It remains a lasting ground cover and generally does not require replacement for decades.

Low Maintenance

Wood mulch usually needs to be added again each year, while river rock can stay in place with little attention. A garden-hose rinse now and then washes off dust and refreshes its appearance.

Eco-Friendly

River rock is a natural material without added dyes or preservatives that could enter the soil. Water can pass between the stones, making it useful for drainage and lower-water xeriscape layouts.

Aesthetic Appeal

River rock brings smooth shapes and naturally mixed colors to a landscape. Its look suits contemporary and traditional settings alike while giving the property a more finished appearance.

Frequently Asked Questions About Yellowstone River Rock

Customer Reviews

4.8(5 reviews)
Jun 2026

River rock ended the downspout splash

One and a half tons of river rock under the downspouts on the west side of the house near Geraldine. Stops the splash and erosion completely, and it looks a lot better than the bare dirt trench that was there before. Rounded stone, no sharp edges for the grandkids to worry about.

Jill P. · Geraldine, MT · Verified Buyer

Dec 2025

Good color, a few odd sized pieces

One ton of river rock for a small bed by the porch near Winifred. Nice rounded stone and good color, but a handful of pieces were closer to gravel size than advertised.

Marvin K. · Winifred, MT · Verified Buyer

Aug 2025

Foundation beds stopped the mud splash

We redid the foundation beds around the house near Big Sandy after years of plain dirt splashing mud up onto the siding every time it rained. Three tons of river rock went in over fabric along the whole north and east sides, and it took my husband and me most of a Saturday to spread and rake it level. It has stayed clean and rounded looking through a full year now, no fading, no scattering into the lawn even with the wind we get out here, and it finally keeps the splash off the siding for good.

Ivan R. · Big Sandy, MT · Verified Buyer

Jun 2025

No more weeds on the shady side

The north side of our house in Denton has been bare dirt and weeds since we moved in, nothing else would grow there in that shade. My neighbor with the skid steer scraped it flat on a Saturday morning, and by afternoon we had river rock from Montana Rock Supply down over landscape fabric. Whole job took about four hours start to finish, and the weeds haven't come back since.

Lorraine D. · Denton, MT · Verified Buyer

May 2025

Decorative bed settled in nicely

Ordered eight tons of river rock for a decorative bed along the front of a client's house near Stanford. Mixed sizes look natural against the foundation plantings, and it settled in nicely with no shifting after a windy spring. Montana Rock Supply's price beat the landscape supplier we used to order from.

Keith M. · Stanford, MT · Verified Buyer

Yellowstone River Rock has 5 verified customer reviews with an average rating of 4.8 out of 5.