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.
USGS scientists use boats to assist in their water quality surveys. This allows them to access deeper portions of the lake that would be hard to get to on foot.
Public Domain.
