Water is very high right now. Of course they've delayed opening the Erie Canal until later this month, May 19, and things may change by then. However, right now Lake Ontario is about 3' above last year's levels. The west half of Champlain Canal bridge C-2 is reporting reduced air draft. At least one boater who goes up the canal every year to spend the summer, is taking the long way around the St. Lawrence Seaway this year since his clearance last year was extremely close. I would just advise that as you get closer, you are in touch with the canal system, especially if your air draft is even close. I think by the time it opens it will be much closer to normal, but can't be sure.