Does Gravel Wash Away?

Which Gravel Washes Away? Gravel can wash away during heavy rains, but proper installation and material selection greatly reduce this risk. Smaller, lighter gravel (like pea gravel) is more prone to washing than larger, heavier stone (like river rock or #57 gravel). Angular crushed stone interlocks and resists movement better than rounded stones. How to Prevent Washout To prevent gravel from washing away: Ensure proper grading so water flows where you want it — not across your gravel surface Install edging along all borders For driveways, create a crown (slight hump in the center) so water drains to the sides Slopes and Drainage On slopes, use crushed stone rather than rounded gravel, and consider installing a geogrid (honeycomb-shaped stabilizer) underneath. French drains or swales can redirect water before it reaches your gravel areas. If erosion is recurring, the underlying issue is usually poor drainage design rather than the gravel itself. Addressing water flow patterns is more effective than simply adding more gravel.

Pea Gravel vs Washed Gravel: Size, Cost, and Which to Use

Pea Gravel runs about $25 per ton and Washed Gravel about $25 per ton. Compare size, drainage, compaction, and which one to use.

Overview

Pea Gravel

Pea gravel is small, naturally rounded stone screened to 1/4 to 3/8 inch and washed clean. It costs $25 to $50 per ton in 2026, weighs 1.3 to 1.45 tons per cubic yard, and is the most popular gravel for patios, walkways, play areas, and garden beds because it is smooth underfoot and comes in warm mixed colors. The rounded shape is also its main drawback: the pieces do not lock together, so pea gravel shifts, spreads, and needs edging.

Washed Gravel

Washed gravel consists of crushed or rounded stone that has been mechanically washed to remove all fines and dust. Without fines, the stones do not compact, allowing water to flow freely between them. Washed gravel is commonly used where drainage is the primary concern.

Common Uses

Pea Gravel

✓ Patios
✓ Walkways
✓ Playgrounds
✓ Landscaping beds
✓ Dog runs
✓ Downspout drainage

Washed Gravel

✓ Drainage systems
✓ French drains
✓ Foundation backfill
✓ Septic systems
✓ Pipe bedding

Pros & Cons

Pea Gravel

+ Smooth and comfortable underfoot
+ Warm mixed natural colors
+ Cheap at $25 to $50 per ton and sold everywhere
+ Drains fast, never muddy
+ Easy to spread by hand

− Shifts and spreads, needs rigid edging
− Ruts under tires
− Hard to push a wheelbarrow or stroller through
− Migrates into lawns and gets thrown by mowers
− Does not pack, so it never firms up

Washed Gravel

+ Excellent drainage
+ No dust or mud
+ Does not retain water
+ Clean, uniform appearance

− Does not compact
− Can shift under load
− Requires edging or containment

Cost Comparison

Measure	Pea Gravel	Washed Gravel
Per ton	$25 – $50	$25 – $45
Per cubic yard	$30 – $60	$30 – $60

Sizes & Colors

Pea Gravel

Pea gravel is naturally rounded stone screened to 1/4 to 3/8 inch, about the size of a garden pea. Because it comes from river and glacial deposits, a load is a mix of colors: tan, brown, cream, gray, white, and rust, with some regional loads running mostly one shade. It is washed, so there are no fines.

Washed Gravel

Typically available in 3/4" (#57), 1"–2", or mixed clean stone sizes. Color varies by source material but is usually gray, tan, or off-white.

Published February 11, 2026

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