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The purpose of this page is to define obstructions, a commonly used term in floodplain management.


All new construction and substantial improvements in V Zones must have the space below the lowest floor either free of obstruction or constructed with non-supporting breakaway walls. Foundations that offer minimal resistance to floodwaters passing beneath an elevated building are required in V Zones. Fill is prohibited for the structural support of buildings in V Zones.

NFIP Requirement

Other Applicable NFIP Regulations


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Last Updated: 
02/19/2019 - 10:44