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..

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Submit-for-Rate (SFR)

An application for flood insurance on a building for which no risk rate is published in the NFIP Flood Insurance Manual. Insurance coverage can be obtained only after the insurer has approved the application and has established the risk premium rate.