The St Lawrence Seaway Flooding in 1958
Long Sault Rapids Before the Seaway
Boats could not navigate these waters, which required building locks and
canals to bypass them.
The Gallop Canal was one of the original canals but not large enough for
larger ships.
One of the major reasons that the St Lawrence Seaway was required (Hydro
electric power was the other).
Houses were moved from the areas to be flooded (The Lost Villages).
Other houses were burned and demolished.
On July 1,1958 The coffer dams were blown up.
And the waters rose to current levels in about four days.