Gravel, Stone and Topsoil Delivery in Oklahoma City, OK

Built-over ground on shale and sandstone

The USDA soil survey maps the center point of ZIP 73102 simply as Urban land, with 100 percent of the unit paved or built over. No native soil profile is described there. In practice, anyone breaking ground nearby is likely to find compacted fill, old base stone, broken concrete or utility trench backfill under the surface.^[1]

That changes how you plan. Test the ground before ordering by digging a hole a spade or two deep. If it is firm and gravelly, it may make a good subgrade as is. If it is soft, dark or full of debris, remove it from the footprint of a drive or patio and replace it with packed Road Base.^[1]

Any garden on fully built-over ground will need imported soil. Topsoil, Garden Soil and Compost are the starting point for every bed and lawn, since there is no native topsoil to work with.^[1]

Below the fill, the geologic map shows the Salt Plains Formation, a Permian unit of shale, sandstone and siltstone. Shale softens and swells when it stays wet, while sandstone stays firm, so ground over a mix of the two can behave unevenly where excavation reaches it.^[2]

The ground at the center point of ZIP 73102 stands 1,210 feet above sea level.^[3]

Shale exposed in a cut can weather into flakes and clay within a few seasons. A face like that holds better under a layer of Riprap or behind a low stone wall than it does left bare.^[2]

For most yard projects, the rock stays far enough down to ignore. It matters for deeper work, such as a footing or a long drain trench, where hitting soft shale is a reason to widen the base and add drainage stone.^[2]

Storms, ice and the drive

The NOAA normals station at Oklahoma City Will Rogers AP, OK, about 7 miles away, averages 36.4 inches of precipitation and 6.7 inches of snowfall a year. Spring storms can bring intense rain, and winter can bring ice as well as snow.^[4]

Will Rogers records 72 days a year with a low of 32 F or colder. Its median last spring freeze is April 4, and the median first fall freeze is November 2. Freeze and thaw cycles through winter loosen any base that holds water.^[4]

Build a drive to shed water fast. Lay fabric over the cleared subgrade, pack Road Base or Crushed Concrete in thin lifts, and finish with Driveway Gravel or 3/4" Crushed Stone. A crown sends runoff to both edges, and a stone-lined swale carries it away from the pad.^[1],[4]

Ice storms add a different stress. A gravel drive with good grip, such as Driveway Gravel over packed Road Base, gives tires something to bite on, and it can be sanded or salted without damage to the surface.^[4]

Choosing between River Rock and Riprap for a swale

A drainage swale beside a drive or along a property line carries storm water away, and its lining decides whether it lasts. River Rock suits a gentle swale with moderate flow. The smooth stones look tidy, let water pass between them and slow it without blocking it.^[4]

Riprap belongs where flow is fast or concentrated, such as below a downspout cluster, at a culvert outlet or on a steeper grade. The large, angular pieces stay put in a storm that would roll smaller stone away.^[4]

Size the swale to the area that drains into it. A long run of roof and pavement on a built-over lot sends more water than a lawn would, so a wider channel with a stone lining is a safer bet than a narrow ditch.^[1]

Many swales use both: Riprap at the inlet and at bends where water hits hardest, River Rock along the straight runs, and fabric under all of it so soil does not wash out from below.^[1]

New lawns and beds from scratch

Starting a lawn on built-over ground means bringing the soil in. Spread Topsoil in an even layer over the prepared area, rake it smooth, roll it lightly and seed or sod. Water it well, since fresh soil over compacted fill can dry out fast in summer heat.^[1]

For flower or vegetable beds, Garden Soil arrives ready to plant. Mixing Compost into the top layer each year keeps it loose and fertile. A cover of Brown Shredded Mulch, Black Shredded Mulch or Red Mulch holds moisture through hot, windy days and keeps the surface from crusting after a storm.^[4]

Edges of a new lawn or bed on fill tend to settle as the loose material beneath packs down. Top up low spots with Topsoil after the first few heavy rains, and reseed any bare patches before weeds claim them.^[1]

Seed or plant tender crops after the median last spring freeze of April 4, and finish fall planting well before the median first fall freeze on November 2 so roots can settle in.^[4]

Patios, paths and hot-weather cover

A paver patio over fill needs a deeper base than one over firm native soil. Remove soft material, lay fabric, and pack Road Base in thin lifts with a plate compactor. Screed Concrete Sand over the base, set the pavers and lock the edges, then pitch the finished surface away from the building so freeze and thaw cannot work water into it.^[1],[4]

Garden paths stay firm with Walkway Gravel or 3/8" Crushed Stone, held in by steel or stone edging. Decomposed Granite packs harder and looks natural beside native plantings. For a play area, Playground Sand or Wood Chips give a soft surface that dries quickly after rain.^[4]

Hot summers and steady wind pull moisture from exposed soil fast. A layer of Wood Chips or shredded mulch on every bed slows that loss and keeps roots cooler. On open, windy ground, coarse Wood Chips stay put better than fine material.^[4]

Decorative stone is another option where watering is hard. River Rock or Pea Gravel around foundation shrubs never needs replacing, keeps soil off the siding in a storm and drains at once.^[4]

Housing in ZIP 73102

The Census counts 1,604 housing units in ZIP 73102. Only 4 percent are detached single-family houses, and the median home was built in 1978. Owners occupy 7 percent of the homes that are lived in.^[5]

Oklahoma City as a whole has 306,366 housing units. Detached houses make up 67 percent of that total, and the median build year across the city is 1982.^[5]

The Oklahoma Department of Transportation defines the stone layer under its pavements as Aggregate Base, Type A, Section 303, in its Standard Specifications for Highway Construction (2019).^[6]