Approximate - nearest available gauge. Use as general reference only.
Valhalla Falls, also known as Thunderhead, or--most commonly--The Reagan Years, is the last big class IV rapid on the run. The rapid is a steep, steady decline in a constricted chute with some boulders in the left channel that create challenging hydraulics at medium-low flows. You can scout this rapid from the right.
Portage
IV+
Rapid
N/A