U.S. flag

Một trang web chính thức của Chính Phủ Hoa Kỳ

Dot gov

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS

A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites..

alert - warning

Trang này chưa được dịch sang tiếng Tiếng Việt. Truy cập trang được dịch sang tiếng Tiếng Việt để xem các tài nguyên hỗ trợ theo ngôn ngữ này.

Basement

Any area of the building having its floor subgrade (below ground level) on all sides. The lowest floor of a residential building including basement must be above the Base Flood Elevation (BFE). Basements below the BFE are only allowed in communities that have obtained a basement exception from FEMA. Floodproofed non-residential basements are allowed.

National Flood Insurance Program Requirements

  • 59.1 - Definition
  • 60.3 - Flood plain management criteria for flood-prone areas