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does a small wall need a french drain?

 
pollinator
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Location: Denver, CO
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I will have a two foot dry stacked wall of broken concrete. Will something this tall need a drainage trench? I was hoping just to dig down a foot and stack more blocks, instead of laying down expensive gravel and plastic pipe.
 
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How well does the soil and subsoil drain?

How much rainfall per year?

Do you have a wet season where it rains a bunch in a couple weeks?


If the answer is "pretty good drainage" and "no wet season" then you likely don't need a french drain.
 
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