
River Drain Rock 1½"
Best for: Bigger decorative drainage and dry creek beds.
Type
River (rounded) drain rock
Size
1½"
Shape
Smooth, rounded, water-worn
Drainage
Excellent — high flow
Overview
About River Drain Rock 1½"
River drain rock one-and-a-half inch brings the same smooth, naturally rounded character as our three-quarter-inch river rock in a bolder, higher-flow size. The larger stone moves more water and makes a stronger visual statement — ideal for the main channel of a dry creek bed, around water features and pond edges, and for larger borders and beds where small rock would look busy or wash away. The generous voids between rounded stones drain freely, so it performs as decorative drainage that also holds its ground on slopes and in heavier flows. Combine it with the three-quarter-inch river rock for a natural, graded creek-bed look — larger stone in the channel, smaller along the edges.
- ✓Larger smooth, rounded 1½" river rock.
- ✓High-flow, decorative drainage.
- ✓Dry creek beds and water features.
- ✓Bold, natural stone where bigger reads better.
River drain rock 1½" brings the same smooth, naturally rounded look as our 3/4" river rock in a bolder size. The larger stone moves more water and makes a stronger visual statement — ideal for the main channel of a dry creek bed, around water features and ponds, and for larger borders and beds where small rock would look busy or wash away.
It drains freely thanks to the big voids between rounded stones, so it works as decorative drainage that also performs, and its size helps it stay in place on slopes and in higher flows. Combine it with 3/4" river rock for a natural, graded creek-bed look — larger stone in the channel, smaller along the edges. Sold by the ton at roughly 1.3–1.4 tons per cubic yard.
Specifications
The details
- Type
- River (rounded) drain rock
- Size
- 1½"
- Shape
- Smooth, rounded, water-worn
- Drainage
- Excellent — high flow
- Unit weight
- ≈ 1.3–1.4 tons / cu yd
- Sold by
- Ton
Applications
Common uses
- ✓ Dry creek beds (main channel)
- ✓ Water features & pond edges
- ✓ High-flow decorative drainage
- ✓ Large borders & beds
- ✓ Slope & swale stone
- ✓ Accent fields & coarse ground cover
Need River Drain Rock 1½" on site?
Priority delivery across French Camp & San Joaquin County.
Questions
River Drain Rock 1½" — FAQ
- Which river rock size for a dry creek bed?
- Use 1½" for the main channel and 3/4" along the edges for a natural, graded look — larger stone where the water concentrates.
- Does larger river rock drain better?
- The bigger voids between stones move more water, so 1½" is the choice for higher-flow decorative drainage.
- Will 1½" rock stay put on a slope?
- Its size and weight help it resist washing out, making it a better choice than small rock for slopes and swales.
More materials
Explore the rest of the yard
QuarryVirgin Baserock (AB Class 2)
Virgin baserock is the structural backbone of paved construction — a quarry-fresh Class 2 aggregate base crushed from solid stone and graded continuously from three-quarter inch down to fines. Because every particle is freshly fractured and angular, the blend keys together and compacts into a dense, rigid platform that distributes traffic loads down to the subgrade without rutting, pumping or settling. It is the same material specified beneath California highways, parking structures and building pads — certified to a minimum R-value of 78 and a sand equivalent of 22 under Caltrans Standard Specifications Section 26. When your project demands a clean, certified, load-bearing foundation engineered to perform for decades, this is the base to build on.
QuarryWash Baserock
Wash baserock delivers the structural performance of Class 2 aggregate base with a cleaner, free-draining character. It is the same crushed base material run through a wash plant to flush out excess silt and clay fines — the result is a low-dust product on the jobsite and a more permeable platform that lets water move through rather than perch on top. It still keys together and compacts under pavement and pads, but it is the smarter specification wherever drainage, cleanliness and a tidy backfill matter as much as raw stiffness. Crews choose it under permeable pavers, behind retaining walls and as pipe and utility base where washed material is preferred or required.
RecycledRecycled Base (Class II)
Recycled base is reclaimed concrete and asphalt, crushed and screened back into a graded three-quarter-inch aggregate that meets Caltrans Class II strength — engineered performance at a materially lower cost. The crushing process leaves the same angular, interlocking particle shape as virgin rock, so it compacts into a hard, stable platform that carries load just like quarried base, with a mild self-cementing tendency that can stiffen it further over time. For the vast majority of driveway, lot and pad work it performs on par with new base while diverting demolition debris from the landfill — a genuine sustainability advantage that can also support green-building credits. Produced on site at our French Camp yard, supply stays steady, local and competitively priced.