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Protecting Your Home > Mitigation Measures

Flood protection measures are dependent on the depth of flooding (see "What is your flood hazard?") and the type of foundation, either elevated or at grade. This page helps you select which measures may be appropriate for your situation.

 


Elevated foundations include crawlspaces, piers, columns and similar structures where there is open space between the floor and the ground.

For deep flooding (more than 2 feet over the first floor), including the threat of a levee failure:

For shallow flooding and local drainage problems:

If the water will stay below the elevated floor, examine wet floodproofing as an option. Or, you can wet floodproof to protect against floods up to the level of your first floor.

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At grade foundations include slabs and other structures where the lowest floor is concrete, resting on the ground.

For deep flooding (more than 2 feet over the first floor), including the threat of a levee failure:

  • Relocation: the most secure way to protect a building at grade.
  • Elevation: more expensive for a building on a slab foundation. However, there are sources of financial assistance (see Funding).

For shallow flooding and local drainage problems:

 

If you have a raised basement home, it may be most cost effective to clear out the lowest floor, "basement", and let it flood. This is called wet floodproofing and it can work for both deep and shallow flooding.  For additional information on Raised Basement homes, see the Braodmoor Area Analysis.