Canyon Creek (NF Nooksack)

Haven't done the upper section described but have been walking in at the trail and hiking as far up the canyon as possible and avoiding much of the nasty drops that Hale describes. This actually avoids much of the class 5 on this run and offers some clean class IV and III creeking fun. This section seems to change quite a bit with each flood so make sure and scout. There are two drops in this section (Relatively new) that are probably class V. Both can be portaged if you prefer. The first drop of these drops has pin rocks throughout the drop and one do-able line on the right. The second is less technical but definitely has the potential for a brutal swim as the hole feeds back upon itself.
Following that ledge, is a small technical III/IV gorge and then the creek opens up. If you follow it down to the NF Nooksack there is one last IV mini-gorge where there is a 2-3 foot boof ledge followed by a couple of ledges past that. At high water, there is a line at the boof ledge on the left. At low water, run the boof as you could pin or dent your boat from a hidden pin rock.