Optimal flow range (Flows based on 2012 WFET Basin Report).
While Gore Rapid has glamor, Tunnel is the psychological heart of this run. A river wide 10' to 12' ledge with a very pushy Class IV lead-in. The hole gets meaner at low water (less than 900cfs). This is usually the crux of the run for most people. The line is pretty much a straight shot, but the hydraulic is legendary, and there is always a crowd of onlookers. There is a very fine sneak line to the left, the meat is right down the main current, and a bony sneak down the right side. The meat line is suprisingly forgiving to playboats, more often than not they just melt right through. Creek boats are another matter, I have seen some horrific rides here. After watching one friend take a severe beating I congratulated her on staying in her boat for so long, she said that the ride was so violent that she never had the opportunity to pop her skirt and swim!