# Long Sault

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For the Long Sault Rapids on the Ottawa River, see [Carillon Canal](/source/Carillon_Canal).

**Long Sault** was a [rapid](/source/Rapids) in the [St. Lawrence River](/source/St._Lawrence_River) upstream and west of [Cornwall, Ontario](/source/Cornwall,_Ontario).[1] *Sault* is the archaic spelling of the French word *saut*, meaning rapids.

The Long Sault created a navigation barrier along the river for much of its history, motivating the construction of the [Moses-Saunders Power Dam](/source/Moses-Saunders_Power_Dam), part of the [St. Lawrence Seaway](/source/St._Lawrence_Seaway), in the 1950s as the size of [ships](/source/Ships) and the volume of shipping traffic along the river began to exceed the capacity of the area's [canal](/source/Canal) locks.

The construction required the flooding of a large swath of land near the rapids to facilitate a [hydroelectric](/source/Hydroelectricity) [dam](/source/Dam) and to make the rapids area more navigable. The flooded region includes Ontario's [Lost Villages](/source/The_Lost_Villages).

The [Long Sault Parkway](/source/Long_Sault_Parkway) takes its name from the rapids.

## See also

- [Cornwall Canal](/source/Cornwall_Canal)
- [Eisenhower Lock](/source/Eisenhower_Lock)

## References

1. ["Cornwall Canal"](http://stlawrencepiks.com/seawayhistory/beforeseaway/cornwall/)

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Adapted from the Wikipedia article [Long Sault](https://en.wikipedia.org/wiki/Long_Sault) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Long_Sault?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.