U.S. flag

미국 정부 공식 웹사이트입니다

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

이 페이지는한국어로(으로) 번역되지 않았습니다. 해당 언어의 리소스는 한국어 페이지를 방문해 주십시오.

Sand Dunes

Naturally occurring accumulations of sand in ridges or mounds landward of the beach. Human alteration of sand dunes within V Zones is prohibited unless it can be demonstrated that such alteration will not increase potential flood damage.

Sand dunes are important first lines of defense against coastal storms and can do much to reduce losses to inland coastal development. It can be assumed that any removal or other alteration of a sand dune will render the dune more susceptible to erosion and increase potential damages to structures behind that dune.

Communities are advised to prohibit all alterations of sand dunes unless the applicant can submit engineering analyses that demonstrate that flood damages will not be increased prior to issuing any permits.

National Flood Insurance Program Requirements

  • 59.1 - Definition
  • 60.3 (e)(7) - Alteration of Sand Dunes and Mangrove Stands