Côte Sainte Catherine Lock

lock, Canada

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June 24, 2026

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The C\u00f4te Sainte Catherine Lock is part of the St. Lawrence Seaway, a vital waterway connecting the Atlantic Ocean to the Great Lakes in North America. This lock, located in Canada, is one of several that allow ships to navigate the St. Lawrence River, bypassing natural obstacles like rapids. Specifically, the C\u00f4te Sainte Catherine Lock raises vessels 9 meters (30 feet) to reach Lake St. Louis, effectively bypassing the Lachine Rapids. The entire St. Lawrence Seaway system, a joint project between Canada and the United States, was completed in 1959 and has significantly impacted trade by opening interior North American heartlands to ocean-going vessels.12

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canals and inland waterways
Major inland waterways of North America
5 miles) to the second, Côte Sainte Catherine Lock, which rises 9 meters (30 feet) to Lake St. Louis and bypasses the Lachine Rapids. Thereafter the channel runs to the lower Beauharnois Lock, which rises 12.5 meters (41 feet) to the level of Lake St. Francis via a 21-km (13-mile)…
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5 miles) to the second, Côte Sainte Catherine Lock, which rises 9 meters (30 feet) to Lake St. Louis and bypasses the Lachine Rapids. Thereafter the channel runs to the lower Beauharnois Lock, which rises 12.5 meters (41 feet) to the level of Lake St. Francis via a 21-km (13-mile)…
Read More