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.

#89 Stone vs Pea Gravel

Side-by-side comparison of #89 Stone and Pea Gravel to help you choose the right gravel for your project.

Overview

#89 Stone

Small angular crushed stone approximately 3/8 inch and smaller. Similar in size to pea gravel but with angular edges that provide better compaction and stability. A versatile fine aggregate used in both construction and landscaping applications.

Pea Gravel

Small, rounded stones about 3/8 inch in diameter. Smooth texture and available in natural earth tones. Pea gravel is one of the most popular decorative gravels for residential projects thanks to its comfortable feel underfoot and attractive appearance.

Common Uses

#89 Stone

✓ Walkways
✓ Pipe bedding
✓ Asphalt mix
✓ Between pavers
✓ Top dressing
✓ Drainage backfill

Pea Gravel

✓ Patios
✓ Walkways
✓ Playgrounds
✓ Drainage
✓ Landscaping beds
✓ Garden paths

Pros & Cons

#89 Stone

+ Angular edges compact better than rounded pea gravel
+ Small size fills tight spaces
+ Good for pipe bedding and utility trenches
+ Comfortable enough for walkways
+ Excellent drainage

− Too small for driveway base layers
− Can migrate without edging
− Less decorative than pea gravel
− May be tracked by shoes
− Not widely stocked at all suppliers

Pea Gravel

+ Affordable and widely available
+ Smooth and comfortable underfoot
+ Excellent drainage
+ Attractive natural colors
+ Easy to spread and install

− Shifts and migrates easily
− Not ideal for driveways (poor compaction)
− Requires edging to stay contained
− Can be tracked indoors
− Difficult to shovel snow from

Cost Comparison

Measure	#89 Stone	Pea Gravel
Per ton	$22 – $40	$25 – $50
Per cubic yard	$28 – $50	$30 – $60

Sizes & Colors

#89 Stone

Angular crushed stone pieces 3/8" and smaller. Color varies by quarry — typically gray, blue-gray, or tan. The angular shape distinguishes it from similarly-sized pea gravel.

Pea Gravel

Pea gravel ranges from 1/4 to 3/8 inch in diameter. It comes in natural earth tones including tan, brown, white, gray, and rust. Some suppliers offer mixed-color blends. The stones are naturally rounded and smooth from water erosion.

Published February 11, 2026

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