I was paddling this side creek with Star runner and Bkitty today. As we approached the last cache I looked ahead and saw that the creek kept going. We decided to keep paddling to investigate but got stopped at a log blocking our access about 80m further. Not to be deterred by the log and the seeing the nice open water beyond it, we got out on the log and pulled our kayaks across and carried on!
You are looking for a bison above the water, and will most likely have to stand up to retrieve it.