Profile of the Great Lakes

From left to right, Lake Superior, the deepest, Lake Michigan and Lake Huron at the same sea level and considered one lake, shallow Lake Erie, and Lake Ontario.  This illustration shows how the Great Lakes are one flowing river of seas that follow gravity down then flow through the St. Lawrence River and empty into the Atlantic Ocean.

Read more about this system of lakes in my critically acclaimed book, The Dynamic Great Lakes widely available on the www and in independent bookstores.