A French drain, also known as a weeping tile or sub-surface drain, is a ditch with a perforated pipe that is filled with stones or gravel. Its goal is to gather groundwater and divert it off your land so that it doesn't build up in undesirable places. The French understood that in order to prevent water buildup in agricultural areas, an efficient drainage system was required. To addre... https://texasgardenmaterials.com/landscape-design-houston-tx/french-drain-installation-houston-tx/