The rivers and water bodies of Montreal are few and mostly artificial. Hydrography of the island of Montreal remained intact until approximately XIXth when Montreal underwent major urban works, including the construction of the Lachine Canal and the creation of the first major parks of Montreal.
After the Ice Age, around 13,000 years ago, Montreal and the Saint Lawrence Lowlands were flooded by the Champlain Sea. Within a few centuries, as and when these waters receded, Mount Royal and its three summits emerged into islands. With the complete withdrawal of the sea, water was retained in some depression of the island. This was the case amongst others of Beaver Lake, located in the palm of Mount Royal. This gradually dried up to become a fen.[1] It was artificially dredged (excavated) in 1938.
There used to be a complex hydrographic, which is now destroyed or channeled.[2][3]
Today there are only a handful of streams and lakes in nature. However, many parks have ponds or artificial lakes of large size.
Below is a partial list of current waters bodies of the island: