did the Canadian about six yrs ago at 2500cfs, we got beta that the section we were gonna run was about 20miles of continuous 3-4. 12 hrs and 50 miles later we dragged our boats to the shuttle car and devised ways to kill our buddy that gave us the info. there was no class 4 and maybe a couple 3's. beautiful canyon though, definitely a mini grand for sure. the section we ran is the section that the Mora feeds into if that helps. The Jemez is a wood fest, I found it not worth running. The Mora sounds steller. good luck, adios, atom....