I will try to answer some of your questions??
Lang: I was born and raised in the Finger Lakes region of New York state and had never heard that song before!! The Erie canal was built in the very early 1800's connecting the Hudson River in Albany NY to Lake Erie in Buffalo NY and a spur into Lake Ontario at Oswego NY, also with spurs into the largest of the Finger Lakes. It is still in operation today for pleasure craft as commercial boats have out grown the size of the locks.
Paul: The 5 Great Lakes, which divide Canada from the States, Have always had large ship, we call them Lakers, transportation system hauling mainly iron ore, grain, and fuel with canals connecting the changes of water level in the lakes. The largest drop being Niagara Falls between Lake Erie and Lake Ontario. The Seaway Project of the late 50's was the building of a large dam and the Eisenhower lock in the St. Lawrence River, which drains the Great Lakes in the Atlantic Ocean, at Massena NY to control the rapids in the river and allow ocean sized vessels to enter the Great Lakes system. It is still in use today although many of the ocean going ship have outgrown the lock.
First a "Laker" ship and then an Ocean goer in the Eisenhower Lock., and the dam.