especially when lake Ontario is just over 700 miles trip.  No sub would make it up the river at full speed against a strong current and the deepest is only 250 feet with out surfacing.    
And such a finding like this is huge......a freaking gold mine.  finding the USS Lexington and  USS Juneau is big but a unexpectedly discover a German sub in that condition that is in and in all places that you would think they would be found but not in Lake Ontario should be a huge world attention.  
Just hard to believe it is true for such a find and little attention. 
Its because it is a fake article. 
The bad photoshop with the snow bank and the sub is hilarious  

 The hull becomes transparent at the "snow"