Below the dam has a little III boogie water, with one solid III drop, but below the tunnel is all II, with one II+. For the IK, I'd wait for 300+ cfm for Rigor down, but in a hard kayak I run it down to 180. Definitely scout the portage eddy for the dam; you don't want to miss it, but it's not hard to catch if you know where it is.
"A witty saying proves nothing."
- Voltaire (1694-1778)