Reading that Prince Edward County has closed three boat launches due to high water. The article said three more launches but I couldn't find the others.
Big Island
Weller’s Bay – Edward Drive
Mabel Kleinsteuber Launch – County Rd 12
https://www.quintenews.com/2019/05/15/206791/Went through Napanee yesterday and the water is just starting to break over the top of the dock. The ramp is good.
Finkles the water is back up to the top board of the dock (if you can call it a dock). The ramp is good.
Haven't been to the Church, but the dock wasn't useable two weeks ago and the water is higher now.
The Glenora dock will be well underwater. The ramp is good but no place to tie up.
Deseronto should be good.
If your coming down for the holiday and going to use a launch, it might be a good idea for a plan "B" and boots.