Exterior French Drain

An exterior French drain usually consists of a trench, often lined with landscaping textiles that prevent clogging from dirt or roots, as well as reducing the possibility of the drainage material from migrating, one or two perforated pipes surrounded by gravel,...

French Drains

French drains are underground water management and drainage systems developed and popularized by Henry French, a Concord, Massachusetts judge and farmer, and discussed in his 1859 book, Farm Drainage. Though his actual drainage system predates him by several centuries...