Types of Gravel: Which One Is Right for Your Project?

Quick answer: The right gravel depends on what you’re building. Crushed stone handles driveways and base layers. Pea gravel works for paths and playgrounds. River rock adds decorative appeal. Decomposed granite is ideal for patios and xeriscape projects.

Before you pick a type, figure out how much you need. Use our gravel calculator to get a volume estimate in cubic yards or tons — then come back here to decide which gravel fits your project.

Pea Gravel

Pea gravel is small, smooth, and rounded — roughly the size of a pea, usually 3/8 inch in diameter. It’s one of the most popular landscaping gravels because it’s affordable, comfortable underfoot, and available almost everywhere.

Best uses:

Garden paths and walkways
Playgrounds and play areas (cushioning for falls)
French drains and drainage beds
Around landscape borders and edging
Under and around decks

Typical depth: 2–3 inches for paths and play areas; 3–4 inches for drainage applications.

Approximate cost: $35–$55 per ton; $4–$8 per bag (50 lb).

Pros:

Comfortable to walk on barefoot
Easy to install — just spread and level
Good drainage
Widely available

Cons:

Shifts and scatters easily — needs edging to stay in place
Not suitable for driveways (too loose for vehicle traffic)
Can be tracked into the house or onto lawn areas

Crushed Stone

Crushed stone is angular, rough-edged gravel made by mechanically crushing limestone, granite, or other hard rock. Unlike smooth pea gravel, the jagged edges lock together when compacted, which makes it the go-to choice for driveways and structural base layers.

You’ll often see it sold by number grades: #57 stone (3/4 inch, most common), #411 (a blend of #57 and stone dust, compacts well), and #21A or #CR6 (crusher run, used for base compaction).

Best uses:

Driveways (primary surface or base layer)
Parking areas
Road base and sub-base preparation
French drains and drainage ditches
Concrete and asphalt sub-base

Typical depth: 4–6 inches for driveways; 6–8 inches when used as a compacted base layer.

Approximate cost: $30–$50 per ton for common grades; crusher run and specialty mixes may vary.

Pros:

Compacts and interlock — stays put under vehicle traffic
Strong load-bearing capacity
Excellent drainage
Cost-effective for large projects

Cons:

Sharp edges make it uncomfortable to walk on barefoot
Less visually appealing than decorative options
Dust can be an issue with some grades (especially crusher run)

River Rock

River rock is smooth, naturally rounded stone that’s been shaped over time by water. It’s larger than pea gravel — typically 1 to 5 inches in diameter, though it comes in many sizes — and has a polished, natural look that works well for decorative landscaping.

Best uses:

Decorative garden beds and borders
Dry creek beds and erosion control
Around downspouts and drainage areas
Water features and pond edges
Mulch replacement in low-maintenance landscapes

Typical depth: 2–3 inches for decorative coverage; 4–6 inches for dry creek beds and drainage channels.

Approximate cost: $45–$75 per ton; premium washed river rock can run higher depending on size and color.

Pros:

Attractive, natural appearance
Low maintenance (doesn’t decompose like mulch)
Good drainage
Works well as a mulch alternative in dry climates

Cons:

More expensive than basic crushed stone or pea gravel
Heavy — harder to move and reposition
Not practical for driveways or high-traffic areas
Larger stones can be unstable underfoot on paths

Decomposed Granite

Decomposed granite (DG) is granite that has naturally weathered into a loose, fine-grained material — somewhere between coarse sand and fine gravel. It compacts into a firm, stable surface and has a warm, earthy appearance that makes it popular for Southwest-style landscaping and xeriscaping.

Best uses:

Garden paths and patios
Xeriscape and drought-tolerant landscapes
Outdoor entertaining areas
Around trees in low-water gardens
Dog-friendly yards (gentler on paws than crushed stone)

Typical depth: 3–4 inches, compacted. DG is usually applied in 2-inch lifts and compacted with a plate compactor.

Approximate cost: $40–$70 per ton. Stabilized DG (mixed with a binding agent) costs more but holds together better.

Pros:

Compacts into a firm, walkable surface
Natural, attractive appearance
Water-permeable — good for runoff management
Weed suppression when properly installed
Works well in hot, dry climates

Cons:

Can wash away in heavy rain if not stabilized or properly edged
Tracked indoors easily (especially unstabilized DG)
Not ideal for wet climates without stabilizer
Needs occasional re-compaction and topping off over time

Quick Comparison Table

Type	Best Use	Typical Depth	Approx. Cost per Ton
Pea gravel	Paths, play areas, drainage	2–3 inches	$35–$55
Crushed stone	Driveways, base layers	4–6 inches	$30–$50
River rock	Decorative beds, dry creeks	2–3 inches	$45–$75
Decomposed granite	Paths, patios, xeriscaping	3–4 inches	$40–$70

How to Choose the Right Gravel

For a driveway: Use crushed stone. Grades like #57 or #411 compact well and hold up under vehicle weight. A proper driveway needs 4–6 inches of compacted gravel, sometimes over a base layer of crusher run.

For a garden path: Pea gravel or decomposed granite are both solid choices. Pea gravel is softer underfoot and easier to spread. DG gives a firmer, more finished surface but requires more prep and compaction.

For drainage: Pea gravel and crushed stone both drain well. For French drains, #57 crushed stone is the standard — it allows water to flow freely while supporting the drain pipe. Avoid DG and river rock in drainage trenches.

For decorative landscaping: River rock is the most visually striking option for beds, borders, and water features. For a natural, low-water look in dry climates, decomposed granite is a good match.

For a playground or play area: Pea gravel is one of the best options — it’s soft enough to cushion falls, drains well, and is safe for kids. Use at least 3 inches of depth under play equipment.

For xeriscaping: Decomposed granite and river rock are both commonly used in drought-tolerant landscapes. DG gives a more uniform ground cover; river rock adds texture and contrast.

Calculate How Much You Need

Once you’ve chosen your gravel type, the next step is figuring out how much to order. Gravel is sold by the ton or cubic yard, and getting the quantity right saves you a second delivery fee — or the hassle of running short mid-project.

For guidance on depth recommendations, bulk vs. bags, and the manual formula, see our how much gravel do I need guide.

Use our gravel calculator to enter your area dimensions and desired depth. It will give you a volume in cubic yards and an estimated weight in tons so you know exactly what to order.