I managed to leave my trusty old Nikkor 16mm f/2.8 Fisheye lens on river right at Granite Rapid on October, 5 2014. If anyone's heading down this fall and wants to go for a little scavenger hunt I'll pay shipping and give you a $100 for its safe return.
The lens is in a small black lens case.
It was left on the 15-20 foot tall (@ 8-12k) cliff immediately at the head of the rapid, on river right. The attached picture and red circle shows where I was standing and left the lens. I'm guessing that access to this eddy/cliff will be by kayak only, but if anyone in a raft wants to prove me wrong I'll be impressed. Thanks in advance.