Soo Locks open early for 2021 shipping season
The U.S. Army Corps of Engineers, Detroit District prepares to open the Soo Locks in Sault Ste. Marie, Mich., on March 15, 2021. To prepare the Lock for the opening of the shipping season, workers began watering the lock by opening valves in stop logs placed to hold back the St. Marys River.

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Photo by: Carrie Fox |  VIRIN: 210315-A-WR196-997.JPG