On a different part of this river, I found out just how powerful this river is when I got lodged up against a tree. It was unnerving. So be on your best behavior and respect its power! This island is best landed on the South side. Do not try to land on the sides, the current is too fast to safely make a landing. BYOP.
Please note - this cache is in a potentially dangerous location and seeking it is done at your own risk! I strongly recommend against doing this in the winter, as ice on rivers is always unpredictable. Legal entry points (PWAs) are provided, other entry points may be considered trespassing on private property. The terrain rating reflects the need to travel a significant distance on water.