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Should this hole be draining quicker?

Discussion in 'In the Garden' started by lozcozard, 7 Jun 2021.

  1. lozcozard

    lozcozard

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    I’m removing a pond. It’s got a couple of surprise layers of cement, total about 3 inches thick that’s holding water in so I thought I’d remove as much as I can.

    thought I’d just remove enough to show soil below for water drainage when I fill it in to extend my lawn

    I filled the bottom with water to see how it drains. but the bottom is not draining very well. I think it’s drained about 0.5cm in 30 minutes. It’s a lot of water, but in heavy storms am sure there’ll be just as much but then it’s mostly earth then so am worried the water won’t drain.

    does anyone think that’s ok before I fill it in? See picture. Am worried I’ll have a water logged lawn if I fill it in without removing more concrete. It’s compacted clay soil maybe that’s it.
     

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  3. sxturbo

    sxturbo

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    The rest of the pond will need removing as the concrete walls are acting as a dam, the water should be able to run through the land
     
  4. lozcozard

    lozcozard

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    Thing is, where that water is, I have removed the concrete on the sides of it. Thats why I filled it up, to see how fast it drains sideways into the earth. but I dont think its draining, its still the same today.

    So not sure what the issue is or what to do. The pond is quite long, so with new loose earth put in, and maybe a trench of stones down its middle to the edge of the garden, about 1ft deep, maybe surface water wont be a problem. I am going to have to try, I cant leave a big hole in my garden and cant see why it would not drain.
     
  5. CBW

    CBW

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    Clay does tend to hold water more.
     
  6. freddiemercurystwin

    freddiemercurystwin

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    And yet it is not draining ....
     
  7. Why Not Indeed

    Why Not Indeed

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    Make a feature of it? Fill it in and grow things that prefer a damper soil.
     
  8. lozcozard

    lozcozard

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    It’s actually in the middle of my lawn and I’d like my lawn back so no I don’t want to do that, but thanks though.

    I’m just going to have to fill it in and see. Maybe it will drain closer to the surface and be ok.
     
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  10. CBW

    CBW

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    Might be successful with sharp sand with a thin layer of topsoil?
     
  11. HERTS P&D

    HERTS P&D

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    My koi pond had a 12" concrete base that I had to Kango through.

    Andy
     
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  12. sxturbo

    sxturbo

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    So you've taken the sides out, what about the base? The concrete base still there?
     
  13. lozcozard

    lozcozard

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    Yes the base under water is there. I couldn’t remove it due to the water. I thought taking the sides out would allow the water to drain sideways and so the base would not matter so much. But it’s not draining at all. I think it’s just very compacted clay.
     
  14. HERTS P&D

    HERTS P&D

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    Take the sides out down to about 2ft.

    Andy
     
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