French Drain

Digging TrenchI have a real problem spot in my garden. The water always collects near the drip line of my house and since my soil is basically heavy clay it never drains well. It's also an area of high traffic, so it always stays muddy.

I came up with a simple solution by using a French drain. Here's how I put it together.

Plastic Drain TileFirst, I created a basin by digging a trench. The size of the trench was important because it determined the amount of water that could be drained or collected. I made this trench about 18 inches wide by 18 inches deep, then lined it with a nylon fabric and made sure to leave plenty of room for overlap on the sides. The nylon fabric is really great because it will not decompose underground and it will keep the soil from clogging the basin or section of drain.

GravelNext, I put in about 2 inches of gravel in the bottom of the basin and then laid in a piece of plastic drain tile. The tile is about 4 inches in diameter and cut to fit the trench. This pipe collects most of the water and it is corrugated so it is very flexible and the holes allow the water to trickle in. You can pick it up at about any builders' supply store.

Filter FabricFinally, I covered the pipe with 2 or 3 inches of gravel and used the overlapping sides of the nylon fabric to seal it off. Then I simply filled in the trench with a lighter, sandier soil.

You can cover an area like this with turf or do like I did, and cover the area with large flat stones to create a path.

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Comments

french drain

by claudia chakalich on October 9, 2009 05:57
I'm not clear on the type of nylon fabric you are using, as shown in the pictures. Is it the same as landscape fabric, with a mesh for drainage?

Solution

by CHRISTY on June 15, 2009 10:56
I think this may be a solution to my landscape problem. I lived on the out skirts of town back 12 years ago. The city has built up so much that now, I'm pretty much dead center of town. They have built up the property on both sides of my yard to build Tri plex apartments. Now all the water that leaves the roofs of the tri plex's falls right into my back yard. My yard it high on one side where my garden is located and the other side is low lying and stays saturated and moist. I have tried to grow numerous plants there. They all seem to lose their green and die. I'm sure it's because the water flows through that area constantly losing nitrogen in the soil. How do you secure the ends of the pipes in the French drain? or do you? Is this like a drain ditch where water just stands in the pipe? Any help is greatly appreciated!

what

by Angie on March 24, 2008 12:57
how did you cap off the ends of the corregated pipe? and did you put extra gravel on the ends

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