Erie Canal and the like...

[Mohoender]

I have no clue for canals outside of Europe, West and East, but in Europe several could be in working order. Most of our canals had been doubled because of the increase in ship size and these new ones would put out of commission. However, the older ones are still in use (essentially for leisure) and in working order. Pound locks often don't really need modern powerization (slave labor could be an option) and many boat lifts were using and still use gravity alone.

Ocean canals should be out of use. I have no doubt that both the Suez and Panama Canal would have been targeted by nukes. I kept the Panama Canal in working order and under Civgov control but that's only for convenience.