In 1911 Niagara Falls froze. They are frozen again.
Last night it was so cold that I wondered how the birds and animals outdoors could survive, yet the nuthatches, woodpeckers, chickadees and many other birds were refueling at our bird feeder this morning. This cold spell has broken records.
It has been below zero F in many areas around the Great Lakes. The link above shows Niagara Falls at the American side.