Drainage Materials
Drainage Materials Drain Rock
Drain rock is washed, clean stone with the fines rinsed out and the pieces sized close to the same. Water moves through the gaps between the rocks instead of getting stuck, which is the whole point. Most drain rock runs between 3/4 inch and 1 1/2 inch. It can be angular crushed stone or rounded river gravel, depending on what your local quarry pulls.
The name tells you the job, not the rock. It's washed and single-sized so the voids stay open, and that's what makes it drain rock instead of just gravel. A yard weighs around 1.4 tons, so a pickup load usually tops out near a yard. Expect to pay a bit more than road base because of the extra washing step at the quarry.
Compare every grade
| Grade | Size | Shape | Washed | Top use | We deliver |
|---|---|---|---|---|---|
| Drain Rock | — | — | — | French drains | Reference only |
| Drain Rock (1.125″, Septic) | 1.125" | — | — | Septic system drainage | Reference only |
| Drain Rock (1.5″ To 3.5″, Pea Gravel, Round) | 1.5" To 3.5" | — | — | French drains | Reference only |
| Drain Rock (1.5″, Drainage, Recycled) | 1.5" | — | — | French drains | Reference only |
| Drain Rock (1.5″, Leach Rock, Red) | 1.5" | — | — | French drains | Reference only |
| Drain Rock (1.5″, Septic, Yellow) | 1.5" | — | — | Septic system bedding | Reference only |
| Drain Rock (1.5″, Washed, White) | 1.5" | — | Washed | French drains | Reference only |
| Drain Rock (1″ To 2″, Leach Rock) | 1" To 2" | — | — | French drains | Reference only |
| Drain Rock (1″ To 2″, Septic) | 1" To 2" | — | — | Septic system drainage | Reference only |
| Drain Rock (1″ To 3″, Drainage) | 1" To 3" | — | — | French drains | Reference only |
| Drain Rock (1″, Drainage) | 1" | — | — | French drains | Reference only |
| Drain Rock (2.5″, Drainage) | 2.5" | — | — | French drains | Reference only |
| Drain Rock (2″ To 4″, Erosion) | 2" To 4" | — | — | Erosion control | Reference only |
| Drain Rock (2″ To 4″) | 2" To 4" | — | — | French drains | Reference only |
| Drain Rock (2″ To 8″, Drainage) | 2" To 8" | — | — | French drains | Reference only |
| Drain Rock (2″, Drainage) | 2" | — | — | French drains | Reference only |
| Drain Rock (3/4″ To 1.5″, Lightweight) | 3/4" To 1.5" | — | — | French drains | Reference only |
| Drain Rock (3/4″ To 1.5″, Round) | 3/4" To 1.5" | — | — | French drains | Reference only |
| Drain Rock (3/4″ To 2″, Natural, Drainage, Leach Rock) | 3/4" To 2" | — | — | French drains | Reference only |
| Drain Rock (3/4″, Round) | 3/4" | — | — | French drains | Reference only |
| Drain Rock (3/4″) | 3/4" | — | — | Landscaping | Reference only |
| Drain Rock (3″ To 1′) | 3" To 1' | — | — | French drains | Reference only |
| Drain Rock (3″ To 9″, Erosion) | 3" To 9" | — | — | Erosion control | Reference only |
| Drain Rock (3″ To 9″) | 3" To 9" | — | — | French drains | Reference only |
| Drain Rock (4″ To 6″, Erosion) | 4" To 6" | — | — | Erosion control | Reference only |
| Drain Rock (4″, Septic) | 4" | — | — | Septic system drainage | Reference only |
| Drain Rock (5/8″) | 5/8" | — | — | French drains | Reference only |
| Drain Rock (6″ To 12″) | 6" To 12" | — | — | Erosion control | Reference only |
| Drain Rock (Eco) | — | — | — | Rainwater filtration | Reference only |
| Drain Rock (Erosion) | — | — | — | Erosion control | Reference only |
| Drain Rock (Filter) | — | — | — | Stormwater filtration | Reference only |
| Drain Rock (Leach Rock) | — | — | — | French drains | Reference only |
| Drain Rock (Premium) | — | — | — | French drains | Reference only |
| Drain Rock (Septic, Limestone) | — | — | — | Septic system bedding | Reference only |
| Drain Rock (Septic) | — | — | — | Septic system drainage | Reference only |
What people use it for
How to choose within drainage materials drain rock
French drain
Washed 3/4" to 1" stone. Angular so it locks around the pipe, washed so it doesn't clog with fines.
Foundation perimeter
Larger clean stone — river rock or #57 — moves water away without holding it.
Downspout dispersion
Cover the splash zone with clean rock so runoff spreads instead of digging a hole.
All drainage materials drain rock grades
Drain Rock
Drain Rock (1.125″, Septic)
Drain Rock (1.5″ To 3.5″, Pea Gravel, Round)
Drain Rock (1.5″, Drainage, Recycled)
Drain Rock (1.5″, Leach Rock, Red)
Drain Rock (1.5″, Septic, Yellow)
Drain Rock (1.5″, Washed, White)
Drain Rock (1″ To 2″, Leach Rock)
Drain Rock (1″ To 2″, Septic)
Drain Rock (1″ To 3″, Drainage)
Drain Rock (1″, Drainage)
Drain Rock (2.5″, Drainage)
Drain Rock (2″ To 4″, Erosion)
Drain Rock (2″ To 4″)
Drain Rock (2″ To 8″, Drainage)
Drain Rock (2″, Drainage)
Drain Rock (3/4″ To 1.5″, Lightweight)
Drain Rock (3/4″ To 1.5″, Round)
Drain Rock (3/4″ To 2″, Natural, Drainage, Leach Rock)
Drain Rock (3/4″, Round)
Drain Rock (3/4″)
Drain Rock (3″ To 1′)
Drain Rock (3″ To 9″, Erosion)
Drain Rock (3″ To 9″)
Material calculator
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Other drainage materials families
Drainage Materials Sand
ReferenceDrainage sand is a clean, washed sand with the fines rinsed out so water moves through it instead of pooling.
Drainage Materials Rip Rap
ReferenceRip rap is big, angular broken stone placed along creek banks, ponds, and drainage channels to stop water from cutting into the ground.
Drainage Materials Bedding
ReferenceDrainage bedding is clean, angular crushed stone that you place under and around a pipe in a trench.
Drainage Materials Fill Material
ReferenceAny stone sold as drainage fill has been washed and screened so no dust or sand rides along with it.
Septic Rock
ReferenceSeptic rock is clean, washed stone that surrounds the perforated pipes in a septic drain field.