Water flowing around ice sits at the base of the American Falls due to cold temperatures in Niagara Falls, New York, U.S., Feb. 21, 2021. (Photo/Agencies)

Visitors view water flowing around ice at the American Falls due to cold temperatures in Niagara Falls, New York, U.S., Feb. 21, 2021. (Photo/Agencies)

Water flowing around ice sits at the American Falls due to cold temperatures in Niagara Falls, New York, U.S., Feb. 21, 2021. (Photo/Agencies)

Visitors view water flowing around ice at the base of the American Falls due to cold temperatures in Niagara Falls, New York, U.S., Feb. 21, 2021. (Photo/Agencies)

Water flowing around ice sits at the base of the American Falls due to cold temperatures in Niagara Falls, New York, U.S., Feb. 21, 2021. (Photo/Agencies)