The Montmorency Falls is a large waterfall on the Montmorency River in Quebec, Canada. The falls are located on the boundary between the borough of Beauport, Quebec City, and Boischatel, about 12 km from the heart of old Quebec City. The area surrounding the falls is protected within the Montmorency Falls Park.
The falls, at 84 meters (275 ft) high and 46 meters (150 ft) wide, are the highest in the province of Quebec and 30 meters (98 ft) higher than Niagara Falls. The basin at the foot of the falls is 17 meters (56 ft) deep. The falls are at the mouth of the Montmorency River where it drops over the cliff shore into the Saint Lawrence River, opposite the western end of the Île d’Orleans. The falls were given this name in 1613 by Samuel de Champlain. He named them in honour of Henri II, duc de Montmorency, who served as viceroy of New France from 1620 until 1625.