Remnant Shorelines
Two ancient shorelines in the Toronto area mark the existence of former glacial lakes. About 2 km inland from the shore a ridge known as the Iroquois Shoreline can be discerned. The old shoreline runs west-east running roughly parallel to Davenport Road just south of St. Clair Avenue West. Further east, the Scarborough Bluffs also formed part of the shoreline of the ancient lake.
Another ancient shoreline exists between 2–4 km offshore of Toronto. It is known as the Toronto Scarp and formed the shore of Glacial Lake Warren or Admiralty Lake. From Bluffer's Park in Scarborough to just west of Hanlan's Point is an underwater bluff.
In New York State, Ridge Road and New York State Route 104 run from west to east along a ridge of the old shoreline of Lake Iroquois.
Read more about this topic: Glacial Lake Iroquois
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