First locks and dams on the Allegheny River are open seasonally. CALL AHEAD if you are not paddling on a weekend!
Think about how you will keep the gear off the floor of the canoe in case of rain.
Found this helpful guide to camping in Wayne National Forest…
http://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5068388.pdf
Here’s a site for boaters of all sorts to learn about the Ohio River: http://watercraft.ohiodnr.gov/publications
Paddle With Us 
Very much enjoyed reading about your canoe trip and also very interested in following your progress if you get back on the water. I have just finished paddling the Monongahela river from Fairmont to Pittsburgh, I want to paddle the Ohio river in September of this year so your comments and pictures were fascinating. I wish you well with all your future endeavours, and thanks for sharing with us newbies.
Dave
Glad you enjoyed our comments. Happy paddling. We are going back out on the Ohio in early October for a couple of days. Maybe as we travel down the river we could make plans to meet up with folks like you here and there!