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.
Winter fieldwork often requires a few extra steps in gaining access to collection sites. In this image, a USGS employee measures streamflow through holes drilled in the ice using an auger.
Public Domain.
