What Is a French Drain?

A French drain is a trench filled with gravel around a perforated pipe. Water seeps through the gravel into the pipe, which carries it downhill to a safe place to release it, like a street, ditch, or dry well. The pipe is usually wrapped in fabric to keep soil out and prevent clogging.

SIGNS YOU NEED ONE

  1. Water pools in the same spot after almost every rain
  2. Grass stays soggy for days after a storm
  3. Water seeps toward your foundation or basement wall
  4. Soil erodes near a downspout every time it rains
  5. A low corner of the yard never fully dries out

If any of this sounds familiar, our guide to standing water in your yard walks through how to confirm the cause before you commit to a fix.

How French Drain Installation Works

We start with an assessment. We get an understanding of your yard’s grade, soil type, and water sources. We then proceed to:

  1. Map a trench path with enough fall, at least one inch of drop for every 10 feet, to keep water moving.
  2. Dig the trench to the right depth for your yard, usually below the frost line so it keeps working through a Minnesota winter.
  3. Lay fabric, add a gravel base, place the perforated pipe, and cover it with more gravel.
  4. Connect the pipe to an outlet, whether that’s daylight at a lower point in your yard, a dry well, or a storm connection.
  5. We backfill, regrade the surface, and reseed or resod.

Getting the slope and depth right matters more than the pipe itself. A French drain installed flat, or too shallow, will fail within a season.

French Drain vs Other Drainage Solutions

A French drain is the right call when water needs to move underground and out of sight. If you’re moving a larger volume of surface water across an open area, a drainage ditch is often simpler and cheaper. If the water is more about appearance and lighter runoff, a dry creek bed does the job while staying visible. Our landscape drainage solutions guide breaks down all three side by side.

Getting It Right the First Time

The NRCS Home Drainage Guide covers the same principles we use on every install: slow the water down, spread it out, and let it soak in where possible instead of just shipping the problem downhill to a neighbor. A French drain that ignores those principles just moves the puddle somewhere else.

Hire a Professional for French Drain Installation

A poorly placed French drain can flood a neighbor’s yard, undermine a foundation, or clog within a year. Our team designs installation around your yard’s actual drainage pattern, not guesswork. See our full lawn drainage services or contact us for a free assessment.