Drainage Gravel: Stone Aggregate for Drainage Systems & Landscaping (2026)
Drainage gravel is washed, angular stone aggregate used in French drains, foundation drainage, dry wells, and landscape drainage applications. The most common size is #57 stone (3/4 inch to 1 inch), which provides excellent water flow while supporting pipe and preventing soil migration. Clean, washed stone without fines is essential for drainage.
Key Features
- Washed and angular for maximum drainage; #57 stone is the drainage standard; Available by the ton or cubic yard; Natural and decorative color options; Prevents soil compaction around drain pipe
Specifications
Applications
- French drain backfill; Foundation footing drains; Dry well fill; Driveway base material; Landscape bed topping
Installation Overview
Order gravel by the cubic yard for large projects. Calculate volume needed: length x width x depth in feet, divide by 27 for cubic yards. Place gravel in layers and compact. For drainage, use clean washed stone without fines.
Pros & Cons
Pros
- ✓ Excellent drainage capacity; Durable and permanent; Low maintenance; Versatile for many applications
Cons
- ✗ Heavy and difficult to move by hand; Delivery required for bulk orders; Can migrate without edging; Difficult to remove once placed
Top Brands
Code Requirements
Foundation drain gravel must meet IRC R405 specifications. Gravel base for pavers must be compacted per manufacturer requirements. Check local specs for road base gravel.
Buying Tips
Buy by the ton for anything over 1 cubic yard - bagged gravel is 5-10x more expensive; Specify washed stone for drainage applications (no fines); Calculate 10-15% extra for settling and waste