Thanks!!
Would it be fair to say that anyone with experience at this site could visually see it was flooded and conditions poor for diving?
That lets us know the eastern end of Lake Ontario, not the St. Lawrence Seaway/ 1000 Islands area. The normal Kingston water level is 0.7 -0.8m over Datum. This spring it has been up to 1.72m over datum.
Canadian Power and Sail Squadrons / Escadrilles canadiennes de plaisance will give you a better idea about the site where the diver went missing. Personally I don't often dive Lock 21 any more as I find it an uninteresting site , not worth more than a couple of visits. A been there, done that, worn the T shirt dive.... just my perspective on it. I prefer the Conestoga for a pleasant shore dive an I prefer to look at a shipwreck rather than concrete walls.