A French drain is a drainage method developed to redirect water away...

The “Gold Standard” French Drain: Reliable Protection Against Water Damage This illustration explains what is widely considered the gold standard of French drain design—a proven drainage system used to control groundwater, protect foundations, and prevent long-term moisture problems. Its effectiveness comes from simplicity, gravity, and correct layering of materials. What a French Drain Does A French drain is designed to intercept and redirect excess groundwater before it can accumulate near str