River Rock vs Pea Gravel: Which Landscape Rock Wins?
Both are smooth, water-worn landscape rocks — but they behave very differently under foot, in drainage beds, and around plants. Here's how to pick the right one.
At a glance
| Attribute | River Rock | Pea Gravel |
|---|---|---|
| Typical size | 1"–5" rounded stones | 3/8"–5/8" pea-sized |
| Cost per ton | $45–$130 | $30–$60 |
| Coverage (2" deep) | ~80 sq ft / ton | ~100 sq ft / ton |
| Foot traffic | Poor — rolls and shifts | Good — packs firmer |
| Drainage | Excellent — large voids | Good — smaller voids |
| Weed control | Very good with fabric | Moderate — seeds settle in |
| Best use | Dry creek beds, downspouts, mulch replacement | Paths, patios, dog runs, playgrounds |
Durability
Both are natural, water-tumbled stone — they don't break down, fade, or wash away like mulch. River rock's larger mass makes it harder to displace in heavy rain, which is why it dominates drainage swales and downspout splash pads. Pea gravel is small enough to migrate onto lawns and driveways without steel or stone edging.
Maintenance
Pea gravel needs periodic top-ups (about every 2–3 years) and edging to keep it in bounds. River rock is nearly zero-maintenance once installed over landscape fabric — occasional leaf blowing and a rake to redistribute is all it typically needs.
Aesthetics
River rock reads as a bold, decorative feature — great as a mulch replacement in beds or as a dry creek bed. Pea gravel reads softer and more uniform, which is why it's the default choice for European-style courtyards, garden paths, and patio surfaces.
When to choose river rock
- Dry creek beds and drainage swales
- Downspout and gutter splash pads
- Mulch replacement in flower beds and around trees
- Decorative borders and xeriscape features
When to choose pea gravel
- Garden paths and walkways
- Patios (with a compacted base and edging)
- Playgrounds and dog runs
- Driveway topping over compacted road base
How much do you need?
A quick estimate: 1 ton of pea gravel covers ~100 sq ft at 2" deep; 1 ton of river rock covers ~80 sq ft at the same depth. For precise numbers, use our river rock calculator or the general stone coverage calculator.
Buying by the pallet or ton
Both stones ship by the ton or supersack, and pricing drops sharply at pallet quantities. Browse current listings for river rock and landscape gravel from natural stone suppliers.