What is the best rock for a French drain?

Author: Aimee Block MD  |  Last update: Thursday, July 24, 2025

River rock tops the list of the best rocks for installing in French drains. Natural round rocks are ideal because their size and shape allows the water to drain more effectively. It's vital to use washed rock because it has been cleaned of debris and particles, which will help prevent clogging the drainage system.

What kind of rock to use for a French drain?

The stone should be no less than ¾” and dense (we suggest Granite, or River Gravel) so it will allow good water flow.

What is the best drainage rock?

Pea gravel is one of the best materials for landscape drainage because its small size allows for outstanding drainage. These rocks are only about ¾ inches in size. Pea gravel is available in a variety of shades, including brown, grey, blue, and red, making it a good choice for a number of different landscapes.

Is pea gravel or river rock better for drainage?

Pea Gravel: Small, smooth, and round, pea gravel is both aesthetically pleasing and effective in allowing water to pass through quickly. River Rock: Larger and more decorative, river rock can be the best choice for a significant drainage project. It offers a balance between functionality and landscape aesthetics.

Is #57 gravel good for drainage?

Versatile Size: The 1/2 inch to 1 1/2 inch size range of #57 gravel suits various construction and landscaping needs. Effective Drainage: Due to its porous nature, # 57 Stone allows water to flow through, preventing pooling and erosion.

What is the Best Drainage Stone to Use for Your French Drain? [FRENCH DRAIN MISTAKES]

What is the difference between 57 rock and 67 rock?

Some specialty crushed stone sizes to know: #57 – This size contains stones between 1/2 and 1 1/2 inches. #67 – Ranging from 3/4 inch to smaller.

What is the best gravel for drainage driveways?

The unique size and shape of pea gravel make it particularly efficient for drainage. Its loose, granular structure ensures that water can flow between the gaps with ease. When used as a top layer or foundation, pea gravel acts as a barrier, directing excess water away from areas prone to flooding or pooling.

Which is cheaper, pea gravel or river rock?

The most significant benefit of pea gravel is the price. It's the cheapest option compared to other types of landscaping rocks. It's also easy to find and doesn't require professional installation.

Do rocks improve drainage?

Here's why: In nature, gravel can indeed assist with soil drainage. The small rocks help keep the soil loose, allowing water to flow between the gaps and filter down. This natural drainage system prevents the roots from sitting in excess water, which is crucial for the plant's health.

How much gravel for a French drain?

How much gravel do I need per foot of French drain? You would need around 0.72 cubic feet of gravel per foot length of French drain for a typical French drain width of 10 inches and a depth of 12 inches if you're using a 4" drain pipe.

What is the 57 stone for French drains?

Description: #57 Stone is a popular lime rock gravel rock choice for drainage, driveways, and erosion control base material. Because of its cheaper cost, it is often used in french drains and in parking lots.

Does Lowes sell pea gravel?

Among 15 choices, these Pea gravel Landscaping Rock have the highest satisfaction ratings with Lowe's customers. While these might be the highest rated, what you choose should fit your needs, so consider additional features such as Brand, Size and Color/Finish Family when making your selection.

What do you put under drainage rocks?

Sand. Sand is often used as a base material for landscape rock due to its excellent drainage properties and ease of use. Good Drainage: Sand allows water to pass through easily, preventing waterlogging and promoting a dry surface.

What can you use instead of gravel for a French drain?

Yes, you can use sand instead of gravel for your French drain when your project calls for it. It is less effective than gravel, but it can get the job done.

What size river rock is best for drainage?

One of your best options is our ¾ inch clear drainage stone. This stone is the perfect middle ground between the ½ inch to 1-inch range that is suitable for drainage projects.

What is the best material for a French drain?

Non-Woven Drainage Fabric

That's why non-woven fabrics are the top choice for creating a landscape drainage system. These can be used for french drains, along with GeoCell bases, and nearly every other water filtration option. You can also purchase non-woven geotextile fabrics in a variety of densities and sizes.

What type of rock is best for drainage?

Pea gravel is a small, rounded rock that is often used in drainage applications. Its smooth surface allows for easy water flow, preventing pooling and providing effective drainage. Pea gravel is aesthetically pleasing and can be used to create decorative drainage areas.

What is the best thing to put in the bottom of pots for drainage?

One of the best things to put at the bottom of a planter for drainage is broken pieces of pot. You can use any unwanted plant pots or chipped crockery for this – simply smash them up into small to medium-sized pieces. Adding a layer of broken pieces of pot like this will prevent compost loss out of the drainage holes.

What is the best landscape material for drainage?

Non-woven geotextile fabric is the best choice for drainage applications where water flow through (permeability) is the main concern. Non-woven landscape fabric is commonly used in French-drains, drain-fields, and erosion control.

What are the cons of pea gravel?

Consider the pros and cons of a pea gravel patio before installing this inexpensive DIY material. While pea gravel is comfortable underfoot and great for drainage, it does have disadvantages, like messiness, instability, and weed growth.

What size pea gravel is best for drainage?

Drainage/Pea Shingle 6mm

A small shingle, also know as Pea Shingle, is very suitable for many drainage and pipe-laying projects. It can also be used for garden landscaping as a weed suppressant and reed beds.

What gravel is best for French drain?

Hard rocks like washed river rock or granite chips are the ideal gravel for French drains.

What gravel hardens like concrete?

Dense Grade Gravel

When compacted, this is a type of gravel that hardens like concrete and forms a semisolid surface that's able to stand up to the rigors of vehicle and foot traffic. This type of gravel is considered practical and functional, but not exactly aesthetically pleasing.

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