Gravel, Drain Rock and Soil Delivery in Toledo, OH

A high water table under flat ground

The USDA survey maps the ZIP's center point in the Dixboro-Urban land complex, 0 to 2 percent slopes. A quarter of that map unit, 25 percent, is urban land that has been paved or built over, and Dixboro soil makes up half of it, 50 percent.^[1]

Dixboro is rated somewhat poorly drained, and it falls in hydrologic group B/D. That split rating means the soil acts like a group D soil, shedding most rain as runoff, while the water table is high, and like a group B soil, taking water in at a moderate rate, once it has been drained. The soil can stay wet a foot or two down for long stretches in spring, and it dries out only when water has somewhere lower to go.^[1]

The texture at that point is fine sandy loam, with a low shrink-swell rating of 1.5 percent. Fine sandy loam stays fairly stable as it wets and dries, but it holds water near the surface and turns soft under wheels when it is saturated. That softness, not swelling, is the thing to design around.^[1]

With slopes of 0 to 2 percent, water on the surface moves slowly and puddles easily. Even a small difference in height across a yard decides where water ends up, so set out every project with a level and a string line.^[1]

According to the USGS geologic map, the bedrock at the center point belongs to the Tymochtee and Greenfield Formations, undivided, a dolostone and shale unit from the Llandovery epoch. Dolostone is a hard rock closely related to limestone. It lies far below the reach of a home project, though a deep dig for a basement or a utility line can reach it.^[2]

Measured at the ZIP's center point, the land lies 610 feet above sea level.^[3]

Cold months and the spring thaw

The NOAA station at Toledo Metcalf Field, about 8 miles from the ZIP, averages 32.4 inches of precipitation a year. Snowmelt and spring rain arrive while the ground is still cold, and on wet, flat soil that water lingers.^[4]

That station counts 118 days a year when the low reaches 32 F or colder. Wet soil that freezes expands, so a stone base sitting in water will lift and settle again with each cold spell. The cure is to keep the base above the wet layer and give water an easy way out.^[4]

Its median last spring freeze is April 20, and its median first fall freeze is October 27.^[4]

Walks and patios need the same care. Pavers set on a thin layer of sand over wet loam will rock and tilt after a winter or two. Set them on several inches of compacted Road Base instead, with a screeded bed of Concrete Sand or Stone Dust Screenings on top, and slope the whole patio away from the house so melting snow drains off.^[1],[4]

Lifting a driveway out of the wet

On somewhat poorly drained ground, the best drive is one that sits a little higher than the yard around it. Strip the topsoil, lay a heavy woven fabric over the subgrade, and build up rather than digging deep. A base that ends a few inches above the surrounding grade stays dry far longer after a storm.^[1]

Start the base with a layer of #4 Crushed Stone or 1-1/2" Crushed Gravel over the fabric. Large, open stone bridges soft spots and lets water drain out sideways. Cover it with Road Base, packed in thin lifts until it rings firm under a tamper, then finish with Driveway Gravel or #57 Crushed Stone.^[1],[4]

Because the ground is so flat, the drive itself has to create the fall that the land lacks. Crown the center, and cut a shallow ditch or a stone trench along one side that runs to a lower spot, a storm drain inlet or a dry well. Without that outlet, water simply sits at the edge and softens the base from the side.^[1],[4]

Fixing a soggy yard

A French drain is the standard fix for a lawn that stays wet. Dig a trench with a gentle fall toward an outlet, line it with fabric, lay a perforated pipe on a bed of Drain Rock, and fill the trench with more Drain Rock before folding the fabric over the top. Topsoil and sod can go back over it, and the pipe carries water away below the root zone.^[1]

Where there is no lower ground to drain to, a dry well can help. A pit filled with #57 Crushed Stone or Railroad Ballast holds a large volume of water and lets it soak out slowly. On soil with a high water table, a dry well works best for roof water in short bursts, not for a steady flow.^[1],[4]

Raising a low corner with Fill Dirt is another option, packed in thin layers and capped with Topsoil. Make sure the new grade still slopes away from the house, or the water just moves somewhere you like less.^[1]

Window wells and basement entries on wet ground fill with water after a heavy rain. A layer of Drain Rock or #57 Crushed Stone at the bottom of each well, over a drain if there is one, keeps water from standing against the glass and freezing there in winter.^[1],[4]

Garden beds on fine sandy loam

Raised beds solve most planting problems on wet ground. Fill them with Garden Soil or a blend of Topsoil and Compost, and build them high enough that roots stay above the wettest layer in spring. Fine sandy loam warms slowly when it is soggy, so a raised bed gives plants an earlier start.^[1]

Spread Brown Shredded Mulch, Black Shredded Mulch or Red Mulch once the soil warms after the last frost. Keep it a few inches deep. Before the first freeze in fall, top up thin spots to shield roots through the winter.^[4]

Along a foundation, a band of River Rock over fabric keeps soil from splashing onto siding during heavy rain and lets roof drip soak in without leaving a trench.^[1]

Older homes near downtown Toledo

The Census Bureau's American Community Survey counts 2,876 housing units in ZIP 43620. Detached single-family houses make up 38 percent of them.^[5]

The median home in the ZIP was built in 1939 or earlier, among the oldest housing in the region. Owners live in 29 percent of the occupied homes.^[5]

Toledo as a whole holds 132,728 housing units, 65 percent of them detached houses, and its median build year is 1955.^[5]

The Ohio Department of Transportation covers the layer under its pavements as Aggregate Base, Item 304, in its 2023 Construction and Material Specifications.^[6]