When the water from the downspout flows into the drain tile system it multiplies several times over the volume of water the drain tile was designed to handle.
Underground downspout drain.
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Since my in ground pipe ran right past the garage i had the garage downspout dump in as well.
Add an underground drainage pipe.
Extending downspouts underground beware the pipe to nowhere.
If external downspouts aren t doing the job they can be redirected or extended or the adjacent earth can be graded to slope downward away from the foundation.
The underground drainage pipe should slope downhill at least 1 8 in.
Depending on the trench length and more important the type of soil digging the trench with a shovel can range from relatively easy to downright impossible.
For this to work you need an area to discharge the water that s lower than the inlet.
Continue until you have completed the trench.
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Install a french drain one of the top yard drainage solutions to divert water away from problem areas.
To do this i cut the black corrugated pipe added a t and aimed the pipe upwards to the downspout.
Rainfall runoff from the downspout will first fill the hole you filled with pea gravel.
In the pictures you can see how i connect the downspouts to my pvc system.
But if there is a problem with the underground drain pipes the fix may be a bit more complex.
Check the vertical pipe.
One of the best ways to get rid of water from a low spot is to simply drain it away through an underground drainage pipe.
Adjust the t connector so that the top side with the drain is flush with the ground.
The trench should be at least 6 inches wide and slope down slightly 1 to 2 inches per length of pipe so water drains away from the downspouts.
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