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A French drain [1] (also known by other names including trench drain, blind drain, [1] rubble drain, [1] and rock drain [1]) is a trench filled with gravel or rock, or both, with or without a perforated pipe that redirects surface water and groundwater away from an area.
It’s got nothing to do with France. A French drain was installed at the Lincoln Memorial to protect the foundation from storm water. (Courtesy of Library of Congress) By John Kelly....
A French drain provides the path of least resistance for water to follow instead of building up and flooding the soil. It uses a hollow, perforated drainage pipe to collect and carry the water from the yard to a designated drainage location, like a municipal wastewater drain or a rain bucket.
By intercepting and redirecting water flow, French drains help prevent issues like basement seepage, soil erosion, and plant roots clogging up with excess moisture—an invaluable asset in maintaining the structural integrity of buildings and the health of landscapes.
French recommended a new drainage system he designed and called a cellar drain. Today, it’s known as the French drain. A French drain consists of an excavated trench with gravel sides and a perforated pipe to carry the water.
Whereas water would roll down a hill, on flat lawns, it will need some help from a French drain. This irrigation system helps the water along, away from flat surfaces, and into storm drains, rain barrels, or another form of rainwater collection connected to the end of the pipe.
A French drain is a ditch in sloped ground, inset with a perforated pipe under a layer of gravel. From the surface, a French drain looks like a rock drainage ditch, and when done well,...