U.S. flag

美国政府的官方网站

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

此页面尚未翻译成[简体中文. 前往 简体中文 页面以该语言获取资源。

Zone A

Areas subject to inundation by the 1-percent-annual-chance flood event generally determined using approximate methodologies. Because detailed hydraulic analyses have not been performed, no Base Flood Elevations (BFEs) or flood depths are shown. Mandatory flood insurance purchase requirements and floodplain management standards apply.

National Flood Insurance Program Requirements

  • 60.3 (b) - Zone A Requirements
  • 64.3 - Definition