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I have some small sinkholes in my yard near an underground drainage for rain gutters, what’s the best repair?


   
underground drainage

The previous owner of my home placed an underground drainage system for the rain gutters on this home. Now along what I believe is the path of this drainage there are several sink holes forming that vary from one foot wide to nearly three feet wide.

I know sink holes will continue to wash out if not stopped so what do I need to do to stop this ‘washing out’ of sub-surface soil?
I have been told to dig them out down to the drainage system and place sand and gravel at the bottom and place soil on top of that, is this the best approach or should I do something else?
Please help before I lose my back yard! Thank you in advance!
2 Responses to “I have some small sinkholes in my yard near an underground drainage for rain gutters, what’s the best repair?”
  1. old drain guy Said:

    i dont know where you live, but do you really need an underground drain for gutters? if not , change it and fill the holes as they will be troublesome in the future.

  2. Matt sinkhole Said:

    Yes, that would probably be your best bet as you describe. It sounds like they used soft pipe before. That black flexible stuff. It’s probably getting smashed. I would replace it with some modern PVC pipe. That is if you really need it. The cheapest way would be to eliminate it all together.


  

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