Large River Rock in South Dakota
A stock-dam edge can look unfinished after spring runoff; Large River Rock gives South Dakota landscapes a broad, rounded accent with visual weight.
- Size: 2 inches to 4 inches
- Type: Smooth, naturally rounded stones
- Color: Tans, grays and browns
From $1,111 for 1 ton, delivery included (larger loads cost significantly less per ton)
Free delivery included
Free delivery anywhere in South Dakota
Pick a delivery date
Weekday delivery, earliest Nov 3
“The culvert under our driveway outside Fort Pierre kept spitting water hard enough at the outfall that it was digging a hole in the ditch every spring thaw. Three tons of large river rock at the outfall broke up the force of the water and stopped the digging completely. South Dakota Rock Supply had the smallest load size we needed without charging a big delivery fee for such a small order.”
Hank D. · Verified Buyer
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Everything You Need to Know About Large River Rock
Size and Grading
- Size
- 2 inches to 4 inches
- Type
- Smooth, naturally rounded stones
- Color
- Tans, grays and browns
Spring water can expose weak-looking edges around a stock dam, cabin landscape, or other open ground. Large River Rock gives those visible areas naturally rounded form and smooth surfaces that stand out against broad South Dakota terrain. It fits a planned dry runoff feature, a constructed water-feature border, or a landscape focal area where a smaller stone would not carry the same presence.
On East River and West River ground that holds water, erosion control deserves attention wherever runoff meets a slope or waterway. Place Large River Rock after the route and surrounding grade have been shaped, using it as the visible stone along the area most exposed to flow. The material's substantial form helps it remain in place under ordinary landscape use while keeping the finished feature clearly defined.
Quickly Calculate How Much You Need
Material: Large River Rock
How to Measure
Measure the length and width of your project area in feet
Decide on depth in inches (2" for landscaping, 4" for driveways)
Enter the values above and we'll calculate the tonnage you need
Need help figuring out the right amount? We can help!
Call or text us at (605) 525-9259 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
Dry Creek Beds
Shape a dry creek bed with large river rock to bring texture and a defined flow line to the yard. Use an existing swale or lay out a winding channel that carries spring runoff through the landscape.
Water Features & Pond Borders
Line ponds, waterfalls, and fountains with large river rock. The stone gives built water features an appearance that fits the surrounding ground.
Erosion Control
Large river rock helps hold slopes, banks, and water edges in place. Its size and weight resist moving water better than smaller material, including around stock dams.
Landscape Accent Features
Place large river rock in planting beds, near entrances, or around specimen plants. Its size creates clear focal points across the landscape.
Why Choose Large River Rock
Dramatic Visual Impact
At 2 to 4 inches, large river rock stands out in a landscape. Use these stones to make focal areas more noticeable.
Exceptional Durability
Large river rock does not rot or break down in landscape use. It keeps its form through deep frost and repeated freeze-thaw cycles.
Displacement Resistant
Once set in place, large river rock resists shifting from wind, water, and foot traffic. Its weight reduces the upkeep often needed with lighter materials.
Natural Authenticity
Water shapes each large river rock into its own rounded form. Those natural variations give planting areas and water features an organic appearance.
Frequently Asked Questions About Large River Rock
Customer Reviews
Calculator ran short by one ton
Bordered three landscape islands in a small commercial lot in Gettysburg with large river rock instead of the mulch that kept blowing out onto the pavement every windy week. Looks sharp now and customers have stopped tracking mulch onto the sidewalk.
Elaine T. · Gettysburg, SD · Verified Buyer
Stock pond bank stopped churning
Two tons of large river rock border the edge of the stock pond by the barn outside Isabel. Keeps the horses from churning the bank into mud when they come down to drink. Looks good against the green grass too.
Rusty B. · Isabel, SD · Verified Buyer
Swale looks natural, drains fast
Built a dry swale along the low side of a client's yard near Garretson, close enough to Split Rock Creek that heavy rain turns that corner into a small river every spring. Four tons of large river rock from South Dakota Rock Supply lined the channel and it moves water away from the foundation without looking like a drainage ditch. Homeowner says it has handled two big storms since without any pooling near the house.
Wanda F. · Garretson, SD · Verified Buyer
Calving Pasture Stopped Washing Out
Terry here, ranching northwest of Buffalo along the Grand River bottom where every spring snowmelt used to cut a new gully across the calving pasture. We had eighteen tons of large river rock hauled out for a dry creek bed to catch the runoff before it undercut the fence line. The tandem truck made two trips down our two-track and dumped it in three spots so we could spread it with the loader ourselves. South Dakota Rock Supply quoted less than the gravel pit forty miles east, and after this spring's melt the gully hasn't moved an inch.
Terry O. · Buffalo, SD · Verified Buyer
Outfall erosion finally stopped digging
The culvert under our driveway outside Fort Pierre kept spitting water hard enough at the outfall that it was digging a hole in the ditch every spring thaw. Three tons of large river rock at the outfall broke up the force of the water and stopped the digging completely. South Dakota Rock Supply had the smallest load size we needed without charging a big delivery fee for such a small order.
Hank D. · Fort Pierre, SD · Verified Buyer
Large River Rock has 5 verified customer reviews with an average rating of 4.8 out of 5.
Large River Rock delivery across South Dakota
- Sioux Falls
- Rapid City
- Aberdeen
- Brookings
- Watertown
- Yankton
- Mitchell
- Huron
- Box Elder
- Spearfish
- Pierre
- Vermillion
