Approximate - nearest available gauge. Use as general reference only.
After passing the meandering section you will come to a powerline overhead, which will signal the start of the gradient on the lower part of this run. Not far downstream, you will encounter (at least the best that I can guess) what may have been a logging dam. Large timbers are embedded in the river, complete with LARGE metal spikes. There has long been a huge pile of deadfall accumulation here, making the river impassible. As you portage (or in the rare event you may be able to run it), be VERY CAREFUL about the spikes. They could easily rip a hole in a boat or snag your clothing.
Note: It may be possible to drive back to here via dirt/sand roads from near the powerlines. (I have never actually investigated to see if it is possible, or whether the roads are private or gated at any point.) If feasible, this would cut out the flat stretch of river (and of course skip the first ledge and the mile or so of boulderbed class I-II which start this run), and would give you quickest access to the two main drops on the river.