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Back flow into basement, how do I prevent?

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  • Back flow into basement, how do I prevent?

    I have a house near a creek which the water gets higher sometimes than the outlet for the basement floor drains. That pipe is made with 4"pvc what do I use to stop the water from coming into the basement from the creek?

    Thanks
    Tom

  • #2
    You may not be happy with the results if you do plug the drain. The drain is allowing ground water back into the basement, minimizing the build-up of hydrostatic pressure. Plugging the drain might result in the floor buckling. Sometimes you will see a swimming pool that was empty in an area with a high water table. That empty pool will float like a boat, and pop right out of the ground. They install special valves to protect from that. Same thing can happen with a high water table surrounding a basement.

    Sump pumps actually lower the water table in the immediate vicinity of the basement to keep this from happening. Apparently you have a drain that terminates somewhere within the higher water table area, which just might include the area where your house is.

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    • #3
      Originally posted by bigangelman
      I have a house near a creek which the water gets higher sometimes than the outlet for the basement floor drains. That pipe is made with 4"pvc what do I use to stop the water from coming into the basement from the creek?

      Thanks
      Tom
      key word being "outlet".
      i would install a 4'' backwater valve somewhere prior to the outlet. this is an approved check valve for waste.it allows water to flow through it in 1 direction and shuts off the other direction. it has to be accessible for cleaning and repairs. they do come in pvc.

      rick.
      phoebe it is

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