Check out Strongwater and Zoo Town, the local kayak shop and a commercial heavily into kayaking. If there are things going on I bet they'll be posting on their FB pages.
Beartrap runs late also, dam controlled. You won't be far from the Upper Salmon, I'm not sure how late that runs but I bet it is runnable in a kayak, at least from North Fork into Corn. The Payettes also run until Labor Day ish, and past. More dam controlled that might be worth the drive for an extended weekend.
I'm off to the MF, forecast is ice-butt cold and snow. Oh well, I'm going with a great group and thank GOD for hot springs!
I am a river, babe - I've got plenty of time, I don't know where I'm going, I'm just following the lines..... - "We are water" by Shaye