Editing St. Lawrence Seaway (section)

== Locks in the St. Lawrence River ==
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There are seven [[lock (water transport)|locks]] in the St. Lawrence River portion of the seaway. From downstream to upstream they are:<ref name="SeawayMap">{{cite web |url=http://www.greatlakes-seaway.com/en/navigating/map/index.html |title=Seaway System |website=Greatlakes-seaway.com |access-date=2016-11-25 |archive-date=2010-06-12 |archive-url=https://web.archive.org/web/20100612101610/http://www.greatlakes-seaway.com/en/navigating/map/index.html |url-status=dead }}</ref>
<!-- only 6 locks listed-->
# St. Lambert Lock—[[Saint Lambert, Quebec|Saint Lambert]], [[Quebec|QC]]
# Côte Ste. Catherine Lock—[[Sainte-Catherine, Quebec|Sainte-Catherine]], QC
# Beauharnois Locks (two locks)—[[Melocheville, Quebec|Melocheville]], QC, at {{coord|45|18|12.6|N|73|55|36.5|W}} and {{coord|45|19|0.1|N|73|55|6.6|W}}
# Snell Lock—[[Massena (town), New York|Massena]], [[New York (state)|NY]]
# [[Eisenhower Lock]]—[[Massena (town), New York|Massena]], NY
# Iroquois Lock—[[South Dundas, Ontario|Iroquois]], [[Ontario|ON]], at {{coord|44|49|48|N|75|18|46.8|W}}

Water Level Elevations:
* Lake Ontario is {{convert|243|ft|1|abbr=on}} above sea level.
* The drop through Iroquois Lock is {{convert|1|ft|1|abbr=on}}.
* Lake St. Lawrence is {{convert|242|ft|1|abbr=on}} above sea level.
* The drop through Eisenhower Lock is {{convert|38|ft|1|abbr=on}}.
* The Wiley-Dondero Canal is {{convert|204|ft|1|abbr=on}} above sea level.
* The drop through Snell Lock is {{convert|45|ft|1|abbr=on}}.
* Lake St. Francis is {{convert|159|ft|1|abbr=on}} above sea level .
* The drop through Upper Beauharnois Lock is {{convert|41|ft|1|abbr=on}}.
* The Beauharnois Canal is {{convert|118|ft|1|abbr=on}} above sea level.
* The drop through Lower Beauharnois Lock is {{convert|41|ft|1|abbr=on}}.
* Lake St. Louis is {{convert|77|ft|1|abbr=on}} above sea level.
* The drop through Côte Ste. Catherine Lock is {{convert|30|ft|1|abbr=on}}.
* Laprairie Basin is {{convert|47|ft|1|abbr=on}} above sea level.
* The drop through St. Lambert Lock is {{convert|15|ft|1|abbr=on}}.
* The drop through the Lachine Rapids is a few feet.
* Montreal Harbour is approximately {{convert|30|ft|1|abbr=on}} above sea level.