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.
Ice breakup on March 11, 2014, at the South Fork Grand River near Cash, SD, at USGS station 06356500. The ice breakup causes the water to surge onto the bank.
Public Domain.