Editing Gulf of St. Lawrence (section)

== Weather and climate ==
In winter, large quantities of ice form in the [[St. Lawrence River]]. Ice formation begins in December between [[Montreal]] and [[Quebec City]]. The [[prevailing winds]] and [[current (hydrology)|currents]] push this ice towards the estuary, generally reaching east of [[Les Méchins]] around the end of December. Ice covers the entire gulf in January and February.<ref name="The secrets of the Saint-Laurent, marine weather guide" />

Ice aids in navigation, preventing the formation of waves and therefore spray, thus having the advantage of preventing the icing process of ships.<ref name="The secrets of the Saint-Laurent, marine weather guide">{{cite web |author1=Guy O'Bonsawin |title=The secrets of the Saint-Laurent, marine weather guide |url=https://publications.gc.ca/collections/collection_2023/eccc/En56-87-1992-eng.pdf |publisher=Environnement Canada |access-date=15 October 2024 |pages=89, 90 of 100 |language=fr |date=3 April 2013 |quote=If you consider that both water and air masses literally hug the ground and follow all its contours and surfaces, it's easy to understand just how much variety there can be in wind and sea conditions.}}</ref>