As temperatures plunged across North America in February, the Niagara Falls partially froze on both sides of the US-Canada border.

Thick ice formations coated the iconic waterfall; however, the amount of ice didn¢¥t stop the water from flowing completely. The volume and force of the water is too great to ever freeze solid, even at extremely low temperatures. The sheets of ice make it appear as though the falls have stopped; however, the water continues to flow underneath.

The Niagara Falls have only stopped flowing once in history due to ice from Lake Eerie that clogged the mouth of the river. In the 1960s, steel ice booms were installed upriver to prevent that from happening again.

Difficult words: plunge (to fall suddenly), clog (to become blocked with a mass of material), ice boom (a construction that stops ice from entering the river).