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paysagement

French drain

In French: drain français

Definition

A trench lined with geotextile and filled with clear stone around a perforated pipe sloped to an outlet. It collects groundwater and carries it away. The same French term also names a house's foundation drain.

Also called

  • yard drain
  • curtain drain

Other names in French

  • drain de terrain

Sources

  1. The minimum fall commonly cited in Quebec for a French drain is 1%, with an absolute minimum of about 0.5%.

    Pente minimale d'un drain français au Québec · Soumission Rénovation