OK, I’ll take a stab at this- I borrowed this shot from somewhere else, but it does show a location that I’m quite familiar with. I’ll credit the source and explain my experiences there after either someone guesses where it is or 24 hours have passed.
I am going to say that it is either the CP or BNSF on the Mississippi River in Minnesota or Wisconsin. The flowages from the dams on the upper Mississippi would freeze over just the same as any lakes. I am going to go with BNSF because I think CSX power is more likely to be there than on the CP. Just as a WAG, I am going to choose Analaska, WI over Prairie Du Chien and LaCrosse.