Mar 11, 2014 5:55 PM by David Randall
Ice jams on Wyoming's Big Horn River have triggered flooding in several towns.
National Guard troops filled sand bags in Greybull Monday, while upstream residents of Manderson made their own preparations.
"We had ice jams moving, and they were moving 17 to 20 miles per hour, and some of these pieces are estimated to weigh 100,000 to 200,000 pounds," Manderson Mayor Randy Brown said.
Further upstream a four mile long ice jam is heading toward Manderson.
The mayor said if the big ice jam breaks before the one in town does, the entire town of Manderson could be underwater.