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 Jon Suchy, Pat Bowen, and Jason Shvanda Standing on the frozen Delaware River at the USGS 01438500 Delaware River at Montague, New Jersey site with their ice measurement equipment as they prepare to make their measurement
Public Domain.
