Coteau-du-Lac National Historic Site

The Coteau-du-Lac National Historic Site is located about 50 km southwest of Montréal on the shores of the St. Lawrence River. It features Canada’s first lock canal and the remains of a fort.

With a history spanning 7,000 years, the site was a portage and encampment location used by Amerindians to avoid the rapids, a military fortification, and a canal that opened the way for commercial shipping.

Activities and experiences

Discover the activities offered at Coteau-du-Lac National Historic Site: Guided tours, exhibitions, school and learning activities, and more.

Plan your visit

Find information for a visit to Coteau-du-Lac National Historic Site: How to get there, fees, hours of operation, facilities and more.

Culture and history

The cultural and historical aspects of Coteau-du-Lac National Historic Site

Nature and science

Learn more about the initiatives undertaken by the Coteau-du-Lac National Historic Site team to preserve the integrity of the site.

Safety and guidelines

Visit Coteau-du-Lac National Historic Site safely.

Stewardship and management

Located between Lake St. François and Lake St. Louis, the “Coteau rapids” are the narrowest and most turbulent of all the rapids along the route, a spot...

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Hours of operation

Closed for the season
Complete schedule

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More places to discover with Parks Canada

Fort Chambly National Historic Site

Roughly 30 kilometres southeast of Montreal, Fort Chambly rises proudly at the foot of the Richelieu River rapids. Built in 1711 to defend the colony, this stone fortification was preceded by three wooden forts.

Battle of the Châteauguay National Historic Site

Discover the strategies behind the significant day of October 26, 1813 when outnumbered Canadian troops defeated the invading American army. Ride 14 kilometres by bike or car across the actual battlefield!

Carillon Barracks National Historic Site

Today, there is little sign of the military occupation – after the garrison departed, the building was renovated and served as a hotel for travelers. Since 1940, it has housed the Argenteuil Regional Museum.

Carillon Canal National Historic Site

Watch boats pass through the Carillon Canal lock, navigating a 20-metre drop in a single operation. Stop in at the museum to inspect an interpretive panel about the history of the Ottawa River’s 19th century travellers.

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