What is Class 3 rip rap used for?

Class 3 granite rip rap is used for shoreline erosion control, stormwater channel lining, culvert outlet protection, creek bank stabilization, and detention basin lining across Minnesota.

Is your rip rap Minnesota DNR compliant?

Yes — our Class 3 granite rip rap meets Minnesota DNR shoreline restoration specifications and is suitable for permitted shoreline alteration projects on Minnesota lakes and rivers.

What size stones are in Class 3 rip rap?

Class 3 rip rap contains individual stones approximately 6 to 24 inches in size with a median stone size (D50) of approximately 12 inches.

How is Class 3 rip rap delivered?

Class 3 rip rap is delivered by side dump truck. Same day delivery is available across the Twin Cities. Call before noon to arrange. Call Chris at (651) 341-0438.

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Class 3 Rip Rap

Class 3 granite rip rap for shoreline restoration, stormwater drainage, and erosion control across Minnesota. Minnesota DNR specification compliant.

Call for Pricing: (651) 341-0438 All Products

Why Choose Class 3 Rip Rap?

Granite Companies has specialized knowledge in sourcing and processing granite rip rap, ensuring that every load leaving our yard meets the highest quality standard — the same standard we apply to our own retaining wall construction projects.

Minnesota DNR Compliant

Our Class 3 granite rip rap meets Minnesota DNR shoreline restoration specifications for riparian buffer and shoreline protection work. Essential for permitted shoreline alteration projects on Minnesota lakes and rivers.

Natural Granite Durability

Granite rip rap does not degrade, dissolve, or compact over time like limestone or sandstone alternatives. Once placed, granite rip rap provides permanent erosion protection without ongoing maintenance.

Permeable Structure

The natural void space between rip rap stones allows water to drain freely while filtering sediment. This permeability is critical for effective shoreline protection — it dissipates wave energy without creating hydrostatic pressure behind the stone.

Habitat Compatible

Natural granite rip rap is compatible with Minnesota aquatic habitat requirements. Rock crevices provide refuge for fish and invertebrates, making rip rap a habitat-positive erosion control solution compared to concrete or sheet steel alternatives.

Common Uses

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Shoreline Erosion Control

The most common application — placed along lake, river, and pond shorelines to prevent wave erosion and protect the bank from water movement.

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Stormwater Channel Lining

Used to line stormwater drainage channels, detention basin outlets, and culvert aprons to prevent scour and channel erosion under high-flow conditions.

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Culvert Outlet Protection

Placed at culvert outlets to dissipate energy and prevent scour on Minnesota road and highway drainage infrastructure.

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Creek Bank Stabilization

Used along creek and stream banks to prevent undercutting and bank failure on agricultural and rural properties across Minnesota.

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Residential Shoreline Restoration

Installed on residential lake lots to restore eroded shorelines and protect property from ongoing wave damage. Commonly required after dock and swimming area erosion.

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Detention Basin Lining

Used to line stormwater detention basin edges and outlet structures on commercial development and subdivision sites.

Product Specifications

Class	Class 3 (per Minnesota DOT / DNR specifications)
Stone Size	Approximately 6" to 24" individual stones
Material	Natural Minnesota Granite
D50 (median size)	Approximately 12"
Weight per ton	Approximately 2,000 lbs
Color	Grey — natural granite
Availability	In stock — call to confirm quantity
Delivery	Side dump truck — same day available
Pickup	East Side: Inver Grove Heights / West Side: Corcoran
Pricing	Call for current pricing per ton