Gravel Delivery in South Dakota

The state geologic map reads quartzite, metaconglomerate and slate at the Sioux Falls center point. This rock is ancient. Quartzite began as sand, and heat and pressure fused the grains into one of the hardest stones there is. Its color runs from pink to deep red. Metaconglomerate is a pebble rock that went through the same squeezing, so its pebbles are welded into the mass. Slate began as mud and now splits into thin, flat plates.^[1]

Quartzite makes excellent crushed stone. It breaks into sharp, angular pieces that barely wear down under tires or plows, and its color gives a drive or a bed a warm red tone. Crushed and screened, rock like this can become #57 Crushed Stone, 3/4" Crushed Stone, Driveway Gravel and Road Base. Its hardness also makes it slow to crush, so the fines in a quartzite base can be coarser than in a limestone base.^[1]

Glaciers once covered this part of the plains and left sand, gravel and boulders behind. Washed and screened, those deposits give Pea Gravel, River Rock, Concrete Sand and Fill Sand. Slate from the local rock is too soft and flaky for a drive, but flat pieces of it can work as stepping stones in a garden. Rounded glacial stone and angular quarried stone do different jobs. Round stone looks soft and drains well in beds and borders, while angular stone locks into a firm layer that carries cars and plows.^[1]

The soil is sandy and fast draining. The USDA soil survey reads fine sandy loam, somewhat excessively drained, at the Sioux Falls center point. Somewhat excessively drained means water runs through it quickly and the soil dries out soon after rain. For a gravel base, that is good news: the subgrade stays firm and does not hold water. For lawns and beds, it means extra watering and added organic matter.^[2]

The ground at the Sioux Falls center point stands 1,500 feet above sea level. The South Dakota Department of Transportation writes its rules for the stone layer under state pavements in Base Course, Section 260, of its Standard Specifications for Roads and Bridges, Version 10-1-2025.^[3],[4]

Winter is long. The weather station used for Sioux Falls counts 162 days a year at 32 F or colder, and it averages 45.3 inches of snow. Frozen ground can hold up a loaded truck, but base stone cannot be compacted into it, and a pile left out can freeze into one solid block. Most base work happens from the spring thaw through fall. Plan winter loads for surface stone, ice traction or jobs that can wait in a pile until spring. A small load of Concrete Sand or 3/8" Crushed Stone kept near the door gives grip on icy steps and walks, and it does not harm concrete or plants the way salt can.^[5]

Snow changes the drop. Clear a path for the truck and a spot for the pile, and mark the edges of the drive and any curbs with tall stakes. Snowbanks hide soft shoulders, ditches and landscape edging. A driver who cannot see the hard ground may have to drop at the street instead. Keep the pile away from the spot where the plow pushes snow, or it can end up buried until spring. A tarp over the pile keeps snow and ice out of the stone, so it spreads loose when the job starts.^[5]

Precipitation is moderate. The Sioux Falls station averages 27.9 inches a year. Summer storms can still soak a yard for a day, and spring melt brings a short wet spell when the top of the soil thaws first. On sandy, fast draining ground like the center point reading, the surface firms up again quickly once the frost is out.^[2],[5]

Many lots here have room for a truck. Newer subdivisions have wide driveways, and many rural lots have long lanes. Check for low wires, tree limbs, septic fields and buried lines before the truck comes. Wind on open ground can strip fines from a pile of Topsoil or sand, so cover it if it will sit. Gravel Valet can drop on a tarp to keep stone dust off a concrete drive.^[2]

Driveways come first. On the fine sandy loam at the Sioux Falls center point, strip the topsoil, level the ground and compact it. Lay fabric, then add Road Base in thin compacted lifts and finish with Driveway Gravel or 3/4" Crushed Stone. Sandy, fast draining ground gives a firm start. Crown the surface so melt water runs to the edges instead of pooling and refreezing in the middle.^[2]

Frost decides how deep to build. With 162 days a year at 32 F or colder at the Sioux Falls station, frost goes deep, and any water caught in a base freezes and lifts it. A coarse lower layer of #4 Crushed Stone or 1-1/2" Crushed Gravel lets water drain down into the sandy soil. Keep the base clean of dirt and grass clippings, since fines hold water.^[5]

Plowing shapes the top. A drive under 45.3 inches of snow a year, as the station averages, gets scraped many times. Angular stone locks and stays put far better than round stone. Asphalt Millings pack into a hard surface that plows well. Set the blade a little high and push snow to a spot where its melt will not run back across the drive.^[5]

Shed pads, patios and walks follow. Compacted Road Base or Crushed Concrete makes a level, dry pad for a shed or a garage slab form. For pavers, set them on a bed of Concrete Sand or Stone Dust Screenings over Road Base, and sweep Mason Sand into the joints. Walkway Gravel and 3/8" Crushed Stone make firm garden paths. Spring thaw is the time to check pavers and reset any that frost has lifted. Edge restraints of steel or concrete keep the outer rows from creeping, and a gentle slope away from the house lets melt water leave before it can refreeze between the joints.^[5]

Gardens need help on sandy ground. Fine sandy loam that drains this fast loses water and nutrients, so mix Compost and Garden Soil into new beds. A thick layer of Black Shredded Mulch, Brown Shredded Mulch or Wood Chips holds moisture in summer and insulates roots through the long freeze. River Rock and Pea Gravel make low water borders, and Playground Sand suits a sandbox.^[2]