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。

Guidance and Reports

Find Resources

Guidelines and Standards

View Risk MAP guidelines and standards for flood risk analysis and mapping activities. These guidelines and standards define the implementation of flood hazard mapping. They describe how FEMA performs Flood Risk Projects, Letters of Map Change (LOMC), and related coordination activities. They are intended for mapping professionals and Cooperating Technical Partners (CTPs) under the Risk MAP Program.

Technical Mapping Advisory Council

Read about the Technical Mapping Advisory Council, a federal advisory committee. The TMAC reviews and makes recommendations to FEMA on matters related to flood hazard mapping.

Notices to Congress

FEMA provides a monthly summary to Congress providing updates on flood risk mapping activities.