The first time I checked into this run was in the company of Chris Ingram and Jud Lehman. Chris hadn't seen this section either, but Jud knows the lines as well as anyone. We had a huge group at the Salmon that weekend and elected to disperse amongst four different runs. This led to an absurd mess of shuttle logistics and we ultimately arranged for someone to pick us up at our take-out and we got out of camp at the crack of noon.
Once on the water, we had a mile or so of wide, shallow cobble bars to grind over before reaching our first rapid. This wasn't so much a horizon line as a wall of boulders with a few slots hidden throughout the jumble. Jud gave us some concise beta and disappeared into the maze. Chris and I eddy hopped along behind him and once past the initial drop, we could see the rapid continuing for over a hundred yards around and over more beautifully rounded granite.
Darin McQuoid and I imagine the more you do this run the less continuous it feels because there are really only a handful of good rapids. But your first time down, prepare to be kept busy by miles of stacked up boulder gardens.
Flows: These pictures were taken when the Salmon gauge was around 5.5 feet and the NF estimate on Dreamflows read about 900 cfs. I would say this is the low end of good, though boner-boaters would probably have fun even lower. The river channel is pretty wide, so I'm sure it could handle a lot more water.
Access: This is probably the best reason to bring someone who knows the run. The put-in and take-out are both at poorly marked fire engine fill sites. You can put it at the mouth of the Little North Fork or cut off some flat water by going downstream about 1/2 mile to the engine fill site. The take-out is about four miles downstream just past a developed mining camp. Some people continue on to Forks of Salmon but all it adds is five miles of class II and a manky class V/portage.