Official websites use .gov
A .gov website belongs to an official government organization in the United States.
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.
The USGS has several social media presences. The sites listed below are those that are considered official USGS presences. Any site found that is not listed is considered a non-USGS presence.
Public Domain.
