canals and locks. don't pay attention to the one that says locks and docks they were just trying to ryme their answer.
Locks
Locks
The Great Lakes are substantially above sea level.
waterways, ports
The St. Lawrence Seaway enables ocean-going vessels to navigate from the Atlantic to the Great Lakes. However, this also brings in exotic species such as zebra mussels and lamprey eels and caused 10 villages on the Canadian side to be flooded.
To navigate the various lakes, a system of locks was created to help raise and lower vessels throughout the Great Lakes. There are six major locations containing various numbers of individual locks at each location.
st. Lawrence seaway st. Lawrence seaway
The St. Lawrence Seaway.
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St. Lawrence Seaway
st. lawrence seaway
The Saint Lawrence Seaway links the Midwest to the Atlantic Ocean. The Saint Lawrence Seaway flows from Lake Ontario to the Atlantic Ocean.