Large River Rock and Bulk Aggregates for Thompson, IA

Iowa Rock Supply brings gravel and aggregate delivery in Thompson, IA to farm lanes, drives and building sites. Start with Class A roadstone when you need a base that binds.

Reach for coarse stone when water is the problem.

This is flat, young glacial ground. Runoff has few places to go, so it cuts where it concentrates.

Materials for Thompson Projects

Slope, swale and bank work calls for big, angular stone. Water slows against it instead of cutting underneath.

Size the stone to the energy you are trying to kill.

Riprap is the heaviest answer: revetment stone for stream banks, culvert outlets, pond edges and slopes that take spring runoff. Class D and Class E revetment describe how the stone is specified locally.

Railroad ballast handles severe drainage and heavy hard standing where large angular stone is wanted. #4 Crushed Stone, sold around here as 1 1/2 inch clean rock, works trench bottoms and construction entrances.

Where the water is underground rather than running across the surface, go open graded. Clean Rock and #57 Stone are washed and open, so water moves straight through them.

Use clean rock for subdrains, drainage tile backfill, pipe bedding and septic rock.

For the surfaces people use every day, Class A roadstone is the standard Iowa base course: crushed limestone with the fines left in, so it binds and compacts. Driveways, parking pads, shed bases and farm lanes all start there.

Limestone Screenings finish the job: paver and flagstone bedding, joint filling and a fine top dressing over a compacted base.

Delivery to Thompson and the Surrounding Area

Order online and a dump truck tips your load on site. Quantities are sold by the ton or by the yard, so you buy the amount you need and nothing more.

Pick your delivery date at checkout. If you are unsure how much to order, each product page has a calculator.

Iowa Rock Supply delivers across Winnebago County, including Forest City, Lake Mills, Buffalo Center, Leland and Scarville. Whether your site sits in town or out on a farm lane, the truck reaches it.

Ground and Conditions in Thompson

Timing drives everything here. Compaction waits for frost to leave the ground and for flat ground to shed its spring water.

Base and paver work runs from late spring to the fall freeze, and a wet spring shortens that window.

The ground is thick, compact pebbly loam till, with sand and gravel along old meltwater channels. Across this part of Iowa, drainage is young and inefficient, and kettles and closed depressions hold water.

Much of it only drains because it is tiled.

That matters when you order. Snowmelt and spring rain sit on the surface where the ground below is still frozen, so water has to go somewhere.

Open graded clean rock under a drain or behind a wall gives it a path.

Erosion here leans toward ditch and tile outlet scour and washouts where runoff concentrates, rather than wide slope loss. Line those spots with coarse stone before the ground lets go in spring.

What stone should I use for drainage in Thompson?

Use washed, open graded stone. Clean rock and #57 stone let water pass straight through instead of trapping it, which suits subdrains, drainage tile backfill, pipe bedding and septic rock.

For surface water on a bank, culvert outlet or swale, riprap is the heavier option and slows the flow. Class A roadstone stays a compacted base material, not a drainage stone.

What should I have ready when the truck arrives?

Have a clear, firm spot for the pile where the truck can reach it. The load tips in one pile, so leave room for it and keep vehicles and equipment out of the way.

Order your quantity first, either by the ton or by the yard, then pick a delivery date at checkout.

Order Gravel and Aggregate Delivery in Thompson

Iowa Rock Supply covers Thompson and the rest of Winnebago County with bulk gravel, crushed stone, sand and topsoil. Choose your material, set the quantity, and pick a delivery date at checkout.

Place your order and the truck will bring it to your site.