can't be. the water stream he's in is way too narrow for the lower falls. (assuming that's not a photoshop) it looks more like weisendanger falls, which is upstream above multnomah falls and only about 50 feet high.
not to mention he'd have been arrested on the spot before he could get his kayak in the water anywhere near the lower falls.
most people didn't care about Bam even when his show was on TV. He has a niche fanbase. you ask the average person, and I bet they don't know who he is.
Who cares if it's Bam or not? If any Joe Nut Bag and his buddy King Fuck Stick kayak'd off M-Falls it would make the news, especially here. I'm not buying it. I watched the first three stories of the local news a couple nights ago and each story was about a traffic accident. I'd imagine these turd farmers would make the news.