Gravel Delivery in Florida

Limestone turns up at most of the southern center points. The state geologic map puts limestone and sandstone at the center point of Miami and the same pair at the center point of Fort Lauderdale. Under the center point of Tampa it lists limestone, dolostone, sand, clay and coral. At Cape Coral's center point the map shows sand, limestone and clay.^[1]

The northern and central points sit on loose sediment instead. Jacksonville, Orlando and Saint Petersburg each show sand, clay, silt, marl, peat and gravel at their center points. Tallahassee's center point carries sand, clay and gravel. Marl is a soft, limy mud, and peat is plant matter that never fully broke down. Ground with either one in it compresses under weight, so a layer of compacted stone has to do the work of holding a driveway up.^[1]

Soil at the surface is sand almost everywhere the USDA survey was read. The center points of Jacksonville and Tallahassee show fine sand, classed poorly drained. Miami's center point is also fine sand and also poorly drained. Tampa, Saint Petersburg and Cape Coral read gravelly fine sand that is somewhat poorly drained. Fort Lauderdale is the exception in this group, with gravelly sand that the survey calls well drained.^[2]

Sand that drains poorly is sand with water sitting in it, and wet sand slides apart under a wheel. On that kind of ground a woven fabric under the stone keeps the base from sinking into the sand over the years. Ground height stays low at most of these points. The center points of Miami, Fort Lauderdale and Cape Coral each stand 10 feet above sea level, while Jacksonville, Tampa and Saint Petersburg read 20 feet. Orlando's center point rises to 90 feet and Tallahassee's to 190 feet.^[3]

The Florida Department of Transportation sets out its own requirements for the layer beneath its pavements in Graded Aggregate Base, Section 204, of the Standard Specifications for Road and Bridge Construction (FY 2026-27). For a home buyer, the useful point is simpler. Where limestone sits under the center points, a stone load may well be crushed limestone, a pale rock that breaks into sharp pieces with plenty of fine dust. That dust is what lets a limestone base pack hard. Round river stone and pea-sized gravel work better as a top layer or a drain fill than as a base.^[4]

Rain is the first thing to plan around. The weather station used for Miami averages 67.4 inches of precipitation a year and the one for Fort Lauderdale 64.2 inches. Tallahassee's station records 58.8 inches and Cape Coral's 57.4 inches. Saint Petersburg reads 52.5 inches, Orlando 51.5 inches, Tampa 49.5 inches and Jacksonville 47.6 inches. A yard of sand that has just taken a summer downpour can look firm on top and still give way under a loaded truck.^[5]

Cold is a small factor. The stations for Miami, Saint Petersburg, Fort Lauderdale and Cape Coral log 0 days a year at 32 F or colder. Tampa and Orlando each log 1 day and Jacksonville 4 days. Tallahassee's station is the cold outlier at 27 days. Snow does not fall in any amount: the stations for Jacksonville, Miami, Tampa, Saint Petersburg and Fort Lauderdale each average 0.0 inches. Frost heave, which breaks up gravel drives farther north, rarely enters the planning south of Tallahassee.^[5]

Pick the drop spot with the ground in mind. A full dump truck is heavy, and a lawn over fine sand can rut deeply even in a dry week. The safest place is the paved driveway, the street edge where that is allowed, or a hard pad of old base. If the pile must go on grass, lay down plywood or a tarp first so the sand under the turf stays undisturbed and cleanup is quick. Keep the pile out of the low corner of the yard, where storm water collects and washes sand or soil away.^[2]

Check the route in before the truck comes. Low oak limbs, palm fronds, overhead lines, narrow gates and soft road shoulders all limit where a driver can back up and tip the bed. A dump body needs clear height above it when raised, so a spot under a tree canopy may not work. On the gravelly sand that the survey shows at Fort Lauderdale's center point, the ground firms up faster after rain than on the fine sand mapped at Miami's, but a dry day still helps any drop.^[2]

Start with the driveway. On poorly drained fine sand like the survey reads at Jacksonville's center point, a durable drive starts with fabric on the graded sand, then a thick layer of Road Base or Crushed Concrete compacted in lifts. A top dressing of #57 Crushed Stone or Driveway Gravel gives a clean surface that sheds water. Crown the drive so rain runs to the sides, because water that sits in the middle soaks down and softens the sand below.^[2]

Drainage work is close behind. With 67.4 inches of yearly precipitation at Miami's station and 64.2 inches at Fort Lauderdale's, roof runoff and yard puddles are common complaints. A French drain wrapped in fabric and filled with Drain Rock or #57 Crushed Stone gives water a path away from a slab. A dry well filled with the same stone can take the water from a downspout. Riprap protects the bank where a swale or a pipe lets water out.^[5]

Garden beds on sandy ground need help to hold water and food. Fine sand drains fast once it is above the water table, and plants dry out quickly in it. Mix Topsoil, Garden Soil or Compost into the top of a new bed, then cover it with Brown Shredded Mulch, Black Shredded Mulch or Red Mulch to slow evaporation. River Rock and Pea Gravel suit beds where mulch would wash away in a storm, such as along a gutter line or a sloped edge. Wood Chips work for paths and play areas under trees.^[2]

Patios and walkways use finer layers. Pavers on sand that stays damp do best on a compacted layer of Road Base with a thin screed of Concrete Sand or Stone Dust Screenings on top. A walkway can use Walkway Gravel or #89 Crushed Stone between steel or plastic edging so the stone stays put. Around a pool deck, Pea Gravel and River Rock are soft on bare feet and drain quickly. In Orlando, where the center point sits at 90 feet, the same steps apply, since the rock map there still shows sand and clay.^[1],[3]

Fill and grading jobs use the plain materials. Fill Sand raises a low spot or backfills a pool. Fill Dirt builds up a pad, and Topsoil finishes the grade for sod. Asphalt Millings are a firm, darker choice for a long rural drive or a parking area, and they bind together in the sun. For the low ground mapped at 10 feet at the center points of Miami and Cape Coral, building up a pad with fill and a stone base keeps a shed or a parking spot above standing water.^[3]