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.

#8 Gravel vs Pea Gravel: Size, Cost, and Which to Use

#8 Gravel runs about $22 per ton and Pea Gravel about $25 per ton. Compare size, drainage, compaction, and which one to use.

Overview

#8 Gravel

Small crushed stone approximately 3/8 to 1/2 inch in size. Good for walkways and as a top dressing for driveways. #8 gravel bridges the gap between coarse aggregates and fine pea gravel, offering a balance of comfort and stability.

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.

Common Uses

#8 Gravel

✓ Walkways
✓ Patios
✓ Between pavers
✓ Asphalt mix
✓ Top dressing
✓ Drainage backfill

Pea Gravel

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

Pros & Cons

#8 Gravel

+ Smaller size is more comfortable to walk on
+ Compacts better than larger stone
+ Good for filling gaps between pavers
+ Excellent drainage
+ Smooth driveway top-dressing

− Can migrate without edging
− Not as stable as larger crushed stone
− May be tracked by shoes
− Less commonly stocked than #57
− Dusty when dry

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

Cost Comparison

Measure	#8 Gravel	Pea Gravel
Per ton	$22 – $40	$25 – $50
Per cubic yard	$28 – $50	$30 – $60

Sizes & Colors

#8 Gravel

#8 gravel consists of angular crushed stone pieces from 3/8" to 1/2" in diameter. Like other crushed stone, color varies by source quarry — gray, blue-gray, tan, and brown are most common.

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.

Published February 11, 2026

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