A French drain is a ditch in the ground, inset with a perforated pipe under a layer of gravel. That pipe funnels storm water away from where you don’t want it—along the foundation, for example—and deposits that water in a more desirable place.
A French drain is a ditch in the ground, inset with a perforated pipe under a layer of gravel. That pipe funnels storm water away from where you don’t want it—along the foundation, for example—and deposits that water in a more desirable place.