Navigation on Lake Saint-Pierre

A commercial vessel sails along the St. Lawrence Seaway.

The average depth of Lake Saint-Pierre is just three metres. In 1844, a channel was dredged in the centre of the lake to permit heavy commercial vessels to pass safely, Originally, the channel was 2.1 metres deep and 30 to 45 metres wide. Today, the channel is 11.3 metres deep and 245 metres wide, to accommodate much larger modern vessels.

Mario Cloutier
2012-08-04
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