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Official websites use .gov

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

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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..

Ponding Hazard

A flood hazard that occurs in flat areas when there are depressions in the ground that collect "ponds" of water. The ponding hazard is represented by the zone designation AH on the Flood Insurance Rate Map (FIRM).

Last updated March 5, 2020