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French drain and sump pump installation

Discussion in 'In the Garden' started by pjriest, 3 Aug 2014.

  1. pjriest

    pjriest

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    Hi,

    We have a flooding problem in the back of our garden (lawn area). During the wetter months, it floods pretty badly. The area used to have a brook running through it. This has been filled in. Neighbours have tried soakaways without success. My own property has a sump pump already installed, but it's not very good. The sump pit empties and take an age to fill up due to bad drainage. I can see for example that the holes in the sump pit plastic thing are too small. On the outside the graven is very fine -- too fine to allow effective drainage, I think. I can only assume the channels that lead to this are also poorly done.

    My first plan is to overhaul the sump pit. At least 3 inches of 1/2 inch gravel around the pit and more holes in the pit liner, each 1/4 inch in width.

    My second plan is to buy a new sump pump to go in there. The float switch on the one we have is unreliable and a higher flow rate won't hurt.

    The third part is where I am coming up short. what is the best way to divert water to the sump area? Should I opt for a french drain type thing, or would a storm drain leading there be better? Any advice would be appreciated.

    Also, any advice on what I should use as the liner for my sump pit (can you buy dedicated goods, or can you just use a water butt??) as well as type / make of pump that you good folk have experienced would be great.

    Thanks a bundle.

    PJ.
     
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  3. WabbitPoo

    WabbitPoo

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    Can you not just ditch the idea of a sump and drain all the water to the place where you pump it do already? (or is that uphill from the sump?)
     
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  4. pjriest

    pjriest

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    No, we can't do that for the reason you mentioned.. The rain drain thing by the house is at least a foot above that area, plus it's about 25 meter away..
     
  5. WabbitPoo

    WabbitPoo

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    OK

    French drains work well if done right. Have done plenty over the years. Its easy - not rocket science. :D
     
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  6. hi1

    hi1

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    The flooding is presumably why the olden people put a brook in to take the water away.
     
  7. pjriest

    pjriest

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    Yep, I've seem a lot of videos and read a lot about how to do it right, so i am fairly confident that would work. In terms of a sump pump, what would you recommend? Which is a reputable make? I'm thinking that 1/2 horsepower with a 1.5 inch outlet would be plenty for this distance / height.

    Cheers.
     
  8. pjriest

    pjriest

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