Koochiching County, MN Gravel and Landscape Rock Delivery

Minnesota Rock Supply handles gravel, stone and aggregate delivery in Koochiching County, MN for contractors and homeowners alike. Some buyers come with a set of plans and a spec sheet, and some come with a muddy drive and a rough idea of what they need.

Class 5 is where most of that work starts. It is the standard Minnesota base course, and it is the material this county's ground asks for again and again.

Materials Delivered in Koochiching County

Class 5 and Class 6 are the base classes, and yards across the state sell base material under those names.

Use it for driveways, parking pads, shed and garage bases, and road base. It carries the fines that let it bind and compact, which is what a soft, wet subgrade needs under it.

Order Class 5 at Class 5.

Washed stone

Washed stone is the family with the fines taken out. In Minnesota that is called clear rock, and it drains instead of holding water.

It does not compact into a base the way Class 5 does.

• 3/4 Clear Rock for drainage beds, drive surfacing, construction entrances and trench backfill. Also called foundation rock or radon rock, it is the clean washed rock used under basement slabs and around footing drains.
• Drainage Rock, usually a 1 1/2 inch clear rock here, for French drains, drywells, footing drains and downspout runs.
• RipRap, also called rip rap or shoreline rock, for lakeshore, streambank, culvert outlet and slope armouring.
• 3/8" Crushed Stone for fine drainage and pipe bedding.

Class 2 and driveway gravel

Yards here sell it as Class 2 granite, buff limestone or red limestone.

It is tighter than base rock and suits drive surfacing and paver base. See Driveway Gravel.

Crusher Run, or 1 inch minus, is crushed rock with the fines left in for drives and bases that need to bind. Minnesota yards more often sell it by class or by a minus size than by the name crusher run.

Sand and granite fines

Soil, fill and decorative stone

Black dirt is what Minnesota calls topsoil, and Top Soil comes screened or pulverized for lawns, sod beds and planting beds. Fill Dirt, or common borrow, raises grade and backfills before a Class 5 course goes down.

Garden Soil suits raised beds.

For finish work, 3/8" Natural Pea Gravel (pea rock) handles walkways, play areas and exposed aggregate. Minnesota River Rock is round washed stone for decorative beds, borders and dry creek beds, and Large River Rock takes the heavier decorative work.

Choosing the Right Material

Beltrami County sits in the Headwaters and spans more than one zone, including the same northern lake plain ground found here. Where the ground matches, the material reasoning matches too, and the same base course applies.

St. Louis County and Itasca County share this county's ground region: thin, stony till over Precambrian bedrock, with rock at or close to the surface and broad peat basins in the west.

That is the same setting, and the same base and drainage choices follow from it.

Where that ground differs from the flat lake plain, rock near the surface changes the work. There is less soft subgrade to bridge, so a drainage layer matters more than base thickness.

On deep silt and clay, water sits instead of soaking away. That ground needs a compacting base like Class 5 under it, and clear rock where water has to move.

Ground Conditions Across Koochiching County

Koochiching County spans more than one ground region, and the water behaves differently in each. On the flat lake plain, there is almost no fall, so meltwater and rain sit where they land.

A tight clay or peat subgrade underneath makes that worse. The lake clay runs as much as 150 feet thick along the northwestern border, and lake sediment is weak, frost susceptible and a poor aggregate source.

On the Superior Upland side, water cannot soak into rock, so it runs off fast and gathers in the hollows and peat basins. Snowmelt is the heaviest flow of the year.

That runoff drives the erosion here: short, steep streams cut hard after heavy rain and snowmelt, red clay slopes slump, and wave action works the shorelines. Riprap armours a bank against ice and wave, while clear rock handles the drainage behind it.

Winters are long and severe, with frost reaching rock in places. Frost depth in the Minnesota Residential Code footing table is 5 feet (60 inches) for Zone I counties, and that is a footing depth set by the building official rather than a target for a gravel base.

Shallow soil over ledge lifts slabs, posts and gravel drives every spring. The working season is short at both ends, with spring load limits on North zone roads running from late March into May.

Delivery Across Koochiching County

Order online and a dump truck tips your load on site. You choose the quantity by the ton or by the yard, and each product page has a calculator if you need to size it.

Before the truck arrives, have the drop spot clear and reachable, with room for a truck to get in and out. The load comes off the truck in one pile.

For a drive or a pad, plan the sequence before the first load lands. Fill dirt goes down first to raise grade, then the compacting base, and surfacing material last.

Common Questions

What do I need to have ready for a bulk delivery?

Have the drop spot marked and clear, with firm ground and room for a truck to reach it and turn around. Keep overhead lines and anything fragile out of the way.

What is the best base material for a patio in Koochiching County?

Class 5 is the base course for a patio here.

Can I order material for a commercial or contractor job?

Yes. Order online by the ton or by the yard, and size larger jobs with the calculator on each product page.

Class 5, clear rock, riprap, sand and fill are all available for contractor work.

Order Gravel, Stone and Soil for Koochiching County

Minnesota Rock Supply serves driveways, parking pads, building pads, drainage runs, patios and shoreline work across Koochiching County. Class 5, clear rock, granite fines, black dirt, river rock and riprap are all ordered the same way.