|Jurisdiction||United States Government|
|Parent department||United States Department of Transportation|
The Saint Lawrence Seaway Development Corporation (SLSDC) is the agency of the United States Department of Transportation that operates and maintains the U.S.-owned and operated facilities of the joint United States-Canadian Saint Lawrence Seaway. It operates 2 of the 15 locks of the Seaway between Montreal and Lake Erie.
Its Canadian counterpart is the Saint Lawrence Seaway Management Corporation, a non-profit corporation under Canadian law.
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