St. Lawrence Seaway – Eisenhower Lock – Massena, NY (Location)
The Eisenhower Lock near Massena NY (Location) is one of two American-operated locks on the St. Lawrence River. Five other locks are operated along this route on the Canadian side of the St. Lawrence River and are, collectively, an integral part of the St. Lawrence Seaway System. The St. Lawrence Seaway locks provide a method for ocean vessels to travel from Montreal, Quebec to Lake Ontario and then back again without the need for intermediary-sized vessels. A further collection of locks between the Great Lakes opens the route all of the way to Thunderbay, Ontario and Duluth, Minnesota on the western end of Lake Superior, a total distance of about 3700 km or 2300 miles.