RipRap in Washington
Do not use RipRap as a broad fix for wet ground in Washington. Keep it at banks, slopes, shorelines, and flow paths exposed to moving water.
- Size: 4 inches to 12 inches and up
- Type: Large, heavy stone
From $437 for 1 ton, delivery included (larger loads cost significantly less per ton)
Free delivery included
Free delivery anywhere in Washington
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Weekday delivery, earliest Nov 3
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Everything You Need to Know About RipRap
Size and Grading
- Size
- 4 inches to 12 inches and up
- Type
- Large, heavy stone
West of the Cascades, rain can sit above glacial hardpan and collect along a defined route. RipRap addresses the exposed ground where that gathered water can scour a shoreline, bank, slope, or channel. It is large, heavy stone intended to protect surfaces that take moving flow, not to serve as general drainage material across a wet site.
A common placement mistake is spreading RipRap over a broad area before identifying where water is actually concentrated. Reserve it for the bank edge, drainage channel, or culvert discharge that receives the flow. In Puget Sound and on the Olympic Peninsula, this approach helps direct the material toward the places where prolonged wet conditions can leave soil exposed.
Quickly Calculate How Much You Need
Material: RipRap
How to Measure
Measure the length and width of your project area in feet
Decide on depth in inches (2" for landscaping, 4" for driveways)
Enter the values above and we'll calculate the tonnage you need
Need help figuring out the right amount? We can help!
Call or text us at (206) 582-6792 and we'll help you calculate the right quantity for your project.
Not sure how much you need? The Rip Rap Calculator has depth guides, coverage charts and worked examples for this material.
Common Uses
Shoreline & Bank Protection
At lakes, ponds, and streams, helps limit erosion along the water's edge.
Slope Stabilization
Supports embankments and steep ground against movement.
Culvert & Outlet Protection
At outlets, it slows the water's force.
Channel Armoring
Helps protect spillways and drainage channels from scour.
Why Choose RipRap
Holds Its Ground
Moving water is less likely to carry away heavy stone.
Erosion Protection
Provides durable coverage for banks, slopes, and drainage exits.
Low Maintenance
After installation, it needs little routine care.
Natural Appearance
Fits in with surrounding shorelines and landscapes.
