French Drain Planning Tool
Estimate materials, size, and layout for efficient water drainage
Project Inputs
What is a French Drain System?
A French drain is a gravel-filled trench containing a perforated pipe that redirects surface water and groundwater away from foundations, yards, and low areas. It helps prevent flooding, soil erosion, and structural water damage.
How This Tool Helps
- Estimate gravel volume required
- Calculate trench excavation size
- Determine pipe length and diameter needs
- Plan drainage for residential and commercial projects
Common Use Cases
- Basement water protection
- Garden and landscaping drainage
- Foundation water control
- Driveway and yard runoff management
Installation Tips
- Always slope trench at least 1% downhill
- Use geotextile fabric to prevent clogging
- Choose washed gravel for better water flow
- Place outlet in a safe drainage area
