Do you deliver to Walworth County?

Yes. South Dakota Rock Supply delivers bulk gravel, stone, sand, soil and mulch across Walworth County, including Mobridge, Selby, Java and Glenham. You order online, choose a quantity by the ton or by the yard, and pick a delivery date at checkout. A dump truck then tips the load on site.

What is the difference between crushed stone and Natural Pea Gravel?

Crushed stone is angular rock that has been broken and screened, so it locks together and holds a surface, which is what base course and drainage stone do. Natural Pea Gravel is a rounded, naturally formed stone about 3/8 inch across. It stays loose and walkable, which suits paths, play areas and dog runs rather than a compacted base.

Should I order material by the ton or by the yard?

Both work, and the choice is yours at checkout. Order by the ton when you want the weight of the load, or by the yard when you are thinking in volume. Each product page has a calculator you can use to size the load before you order. Quantities are ordered by the ton or by the yard.

Walworth County Landscape Rock and Gravel, SD

South Dakota Rock Supply brings gravel, stone and aggregate delivery in Walworth County, SD to acreages, farmsteads and job sites around Mobridge, Selby, Java and Glenham. Base course is the crushed base layer you build on here, and it is the name South Dakota contractors order by.

You order online, size the load by the ton or by the yard, and a dump truck tips it on site. The material below is named the way it is named in this part of the state.

Materials Delivered in Walworth County

Section 882 Table 1 keeps subbase, gravel cushion, aggregate base course, gravel surfacing and pit run apart as separate materials.

Order Base Course for driveways, parking pads, and shop or shed slabs.

Gravel Cushion is the cushion course rolled out under concrete and asphalt, and the crushed top course on a gravel drive.

It is a South Dakota term, not a synonym for gravel surfacing.

Washed stone handles water. Washed Rock goes in drain tile, drywells, sump and downspout runs, and window wells.

#57 Stone is a one inch washed rock for drainage and drain tile beds, and #4 Crushed Stone is a 1 1/2 inch clean rock for heavy drainage and trench bottoms in wet ground.

Sand beds and levels. Mason Sand is for brick and block work, paver joint sand and play sand.

Washed Sand, also called concrete sand, beds and levels under slabs and pavers and mixes into tight clay ground.

Soil and fill build the grade. Top Soil is a screened growing layer for lawns and beds.

Fill Dirt is clean fill for raising grade and backfilling before a base course goes down. Shredded Mulch holds moisture in beds and tree rings through a dry, windy summer.

Decorative stone finishes the yard. River Rock covers beds, borders and rock mulch around foundations, where wind makes bark mulch a losing battle.

3/8" Natural Pea Gravel is a rounded, walkable stone for paths, play areas and dog runs.

Delivery Across Walworth County

Bulk material arrives by dump truck and is tipped in one pile at the spot you choose. Have the drop area clear and reachable, with room for a truck to pull in and out.

Order online for delivery around Mobridge, Selby, Java and Glenham. Choose a quantity by the ton or by the yard, and use the calculator on each product page to size the load.

Pick your delivery date at checkout, and the truck brings it to the site.

Ground Conditions Across Walworth County

Walworth County sits in the Missouri Coteau, where the ground is hummocky stagnation moraine: a jumble of knobs and closed kettles in stony glacial till lying over Pierre shale. Gravel sits in the kames, and much of the county has no natural drainage network.

Water has nowhere to run. The kettles and sloughs are closed basins, and the shale under the till stops what does soak through, so low ground stays saturated.

That is why a drainage layer matters as much as the base itself on a wet site.

Erosion comes from wind scour on the open knobs, runoff cutting the steeper coteau slopes and the Missouri breaks, and wave action on reservoir shorelines. Riprap and large river rock protect those edges where water and wind work on them.

Winters are long, cold and windy, with deep frost, heavy drifting and hard freeze-thaw cycling on exposed ground. Frost depth is commonly 42 to 48 inches across the region, and the local building official sets the figure for a given job.

The working season is short between the spring thaw and freeze-up, so timing a delivery matters.

Choosing the Right Material

Edmunds County shares the Missouri Coteau ground, so the till, the kettles and the shale underneath are the same story there as here. The base and drainage choices carry over unchanged.

Dewey County and Corson County sit on the northwestern plateaus and buttes, where sandstone and soft shale tablelands are broken by buttes and baked red clinker. The soils there are clay and sandy clay, with gumbo on the shale flats and hard sandstone caprock on the high ground.

That is a different ground from the stony till here. On gumbo flats, water sits on the clay and a drainage layer does the work a compacted base cannot.

On caprock high ground, the rock is already hard and the base choice follows the surface you are building on.

Order Base Course, Gravel and Sand for Walworth County Projects

South Dakota Rock Supply delivers base course, gravel cushion, washed stone, sand, topsoil, fill dirt, riprap and decorative rock to drives, pads, drainage work and yards across Walworth County. Name the material the way it is named here, size the load online, and place your order for delivery.

Base Course, Sand and Gravel Delivery in Walworth County, SD