Drainage Education
Yard Drainage & French Drain Systems — Keep Your Lawn and Landscape Dry
Solve soggy lawn spots and standing water with a properly designed drainage solution. Learn how French drains work, when to use them, alternative options, and what to expect from a professional install.
Solve soggy lawn spots and standing water with a properly designed drainage solution. Learn how French drains work, when to use them, alternative options, and what to expect from a professional install.
What is a French Drain?
A French drain is a buried trench filled with gravel and a perforated pipe that captures excess subsurface and surface water and redirects it to a useful and safe discharge point. It prevents pooled water, protects foundations, and helps preserve landscaping and hardscapes. However, there are almost always better alternatives for surface water. French drains are basically ineffective for surface water. Some companies like to combine french drains with other drainage methods; however, connecting the two often shortens the life of the french drain. French drains should act as stand alone units, not directly connected to other drainage systems of the same size. Consult a professional (us!) to determine best custom approach to your specific drainage situation.
A French drain is a buried trench filled with gravel and a perforated pipe that captures excess subsurface and surface water and redirects it to a useful and safe discharge point. It prevents pooled water, protects foundations, and helps preserve landscaping and hardscapes. However, there are almost always better alternatives for surface water. French drains are basically ineffective for surface water. Some companies like to combine french drains with other drainage methods; however, connecting the two often shortens the life of the french drain. French drains should act as stand alone units, not directly connected to other drainage systems of the same size. Consult a professional (us!) to determine best custom approach to your specific drainage situation.
Core Components & How They Work
Trench: The channel dug along the path water follows or toward a low point.
Perforated pipe: Usually 4" or 6" quality corrugated pipe or 4" or 6" PVC with holes facing down/out to collect water.
Drainage gravel: Coarse, washed rock surrounding the pipe that allows water to percolate.
Filter fabric: Geotextile used to keep soil and silt from clogging the gravel and pipe.
Outlet / Discharge: Daylight, storm drain, dry well, or other safe location where water exits the system.
Trench: The channel dug along the path water follows or toward a low point.
Perforated pipe: Usually 4" or 6" quality corrugated pipe or 4" or 6" PVC with holes facing down/out to collect water.
Drainage gravel: Coarse, washed rock surrounding the pipe that allows water to percolate.
Filter fabric: Geotextile used to keep soil and silt from clogging the gravel and pipe.
Outlet / Discharge: Daylight, storm drain, dry well, or other safe location where water exits the system.
When to Choose a French Drain
Use a French drain when there is persistent soggy or saturated spots with or without rain, standing water near foundations or patios (generally other drainage systems are typically used near and around structures), poorly draining soils (clay/compacted), or where subsurface water needs redirecting.
Use a French drain when there is persistent soggy or saturated spots with or without rain, standing water near foundations or patios (generally other drainage systems are typically used near and around structures), poorly draining soils (clay/compacted), or where subsurface water needs redirecting.
Professional Installation — Step by Step
Below is a concise pro workflow detailing what we do when installing a French drain:
Evaluate site: map water flow, soil type, and pick an outlet. Call 811 before digging.
Mark & excavate: typical residential trenches are approximately 12" wide on average for allowing more gravel and 12–16" deep is typically ideal depending on volume and slope.
Line with fabric: set down geotextile to prevent sediment migration.
Lay pipe with slope: place perforated pipe with consistent 1% or greater slope toward the outlet.
Backfill & wrap: cover pipe with gravel, fold fabric over the top, and finish surface with soil, sod, or decorative stone.
Connect outlet: ensure discharge is away from foundations and neighbors and conforms to local codes.
Below is a concise pro workflow detailing what we do when installing a French drain:
Evaluate site: map water flow, soil type, and pick an outlet. Call 811 before digging.
Mark & excavate: typical residential trenches are approximately 12" wide on average for allowing more gravel and 12–16" deep is typically ideal depending on volume and slope.
Line with fabric: set down geotextile to prevent sediment migration.
Lay pipe with slope: place perforated pipe with consistent 1% or greater slope toward the outlet.
Backfill & wrap: cover pipe with gravel, fold fabric over the top, and finish surface with soil, sod, or decorative stone.
Connect outlet: ensure discharge is away from foundations and neighbors and conforms to local codes.
Alternatives & Complementary System
A French drain is one tool. Depending on your yard, we may recommend:
Regrading / reshaping the lawn
Swales or surface channels for gentle runoff
Catch basins / channel drains for hardscape areas
Dry wells / infiltration pits for basins with no daylight outlet
Rain gardens / bioswales to naturally manage and absorb runoff
A French drain is one tool. Depending on your yard, we may recommend:
Regrading / reshaping the lawn
Swales or surface channels for gentle runoff
Catch basins / channel drains for hardscape areas
Dry wells / infiltration pits for basins with no daylight outlet
Rain gardens / bioswales to naturally manage and absorb runoff
Subsurface VS Surface Water
What is the difference???
What is the difference???
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Subsurface Water
Subsurface water is water below the ground surface that you cannot see until it causes problems. Think of it as water moving through the soil layer or trapped underground. It includes: Groundwater moving through soil Water trapped under foundations Saturated soil that never dries Hydrostatic pressure pushing water toward a house Cause: High water table, underground springs, poor soil drainage (like clay), or improper lot drainage. How it’s managed: French drains Drainage tile Foundation drains Sump pumps Gravel trenches around problem areas |
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Surface Water
Surface water is water you can see collecting on top of the ground. It includes: Puddles in the yard Standing water after rain Water flowing down a slope Runoff from roofs, driveways, or neighboring properties Cause: Heavy rain, poor grading, compacted soil, clogged gutters, or lack of proper drainage. How it’s managed: Swales Channel drains Catch basins Regrading Piping out Downspout extensions Open French Drains |
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Southern Solutions pushes for an educated customer because we all win when we are all on the same level of understanding. We also send our employees to classes to insure we are up to date on the greatest resources and planning for drainage systems.
We offer free training seminars for homeowners! Contact us so we can set up one for your community.
We offer free training seminars for homeowners! Contact us so we can set up one for your community.
Big Pipes for Big Problems
Southern Solutions Landscaping and Grading has worked with HOA's, city's, D.O.T and engineers when needed to solve many drainage issues our clients face to make sure we are getting the job done right. Contact us for more info to see how we can help you and your community!
Our clients include local businesses and homeowners!
Our clients include local businesses and homeowners!
ALL inclusive drainage solutions with your new or old landscaping.
Choose a company that will and can incorporate your vision and give you a great solution for your drainage and landscape needs.
We offer drainage solution services that range from groundwater in your crawl space, to surface water erosion. Our drainage solutions can vary from site to site situations. We offer custom system designs that are the most effective systems in our industry. French drains, catch basins, down spouts, rain gardens and dry wells are a few options we offer. Please contact us to better understand your drainage problem if you have areas that do not seem to be usable, remain wet or have water coming from neighboring lots.
Improving drainage around your yard is crucial for several reasons:
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Improving drainage not only protects your property from potential damage but also contributes to a healthier and more sustainable landscape by managing water effectively and reducing the risk of erosion and water-related issues.
We aim to be the company that is Comprehensive and Insightful for your Educational Purposes
Remember drainage and grading go hand and hand. And not all drainage system are created equal, so go with the best in the business!
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