How to Fix Water Buildup Under Your Storage Shed

Water build up under storage sheds, or any other outbuildings can be a cause of many health hazards. It can be an ideal breeding ground for mosquitos and other insects that pose a danger to your health or even the animals on your homestead. On top of that, the water is not good for the shed where it can sink into the eroding soil and put your belonging at risk of rotting.

Why does the problem come from?

This problem is commonly brought by lack of proper gutter drainage system, which can direct the rainwater to the drainage system. The water ends up flowing off the roof, and without a good shed drainage solution, it will end up building up on the ground.


This problem can be corrected by building a drainage system to help remove the excess water. Here are a few steps you can do to fix the problem.Level the surface around your shed to control where the where the water will flow towards. Chose a direction that is sloppy and away from trees or buildings. Mark this path and from the shed to destination flow of the water.Dig a trench that is at least 8 inches wide and 18 inches deep. The drain should run from the sides to the area where the water can be drained. Slope the trench top 1 inch for every 10 feet run. You can use a stake to measure the slope. Make sure that you position the drain where the water from the dripping line and the roof runoff can be caught easily to avoid it pudding under the shed.Fill 3 inches of the trench with a layer of the grave and Cove the layer with landscaping fabric. Make sure it is large enough to hang each side of the channel for about 8 inches.Lay a 6” pipe on the fabric layer and make sure it runs the entire length of your trench. Cover it with gravels until it can’t be seen anymore. The ends of the pipe should be over the top and should be checked to make sure they can move the water from the shed.Pull the fabric ends over the gravel to enclose the pipe and the gravel in the inside. Overlap them until they are completely covered. This will ensure that the soil will not be filtered in and clog the drain.Cover the remaining space with about 2 inches of sand, and the rest of the area fill it with topsoil. You can then plant the top of the trench land covers like grass or cover it with sod cut.

Things you need

  • Shovel
  • Level
  • Gravel
  • Sand
  • Drainage pipe (recommended 6 inches perforated PVC pipe)
  • Topsoil
  • Grass seeds or sod
  • You might also require wheelbarrow for transportation of the materials.


It is good to add stone beds at the end of the drainage pipe to prevent the soil on end from washing away.

You might also need to consult with your utility company to make sure that no underground line is on your drainage site.

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