Uhh yeah, just a warning from someone who's broken her back multiple times:
When I was in CR for a family vacation, we went whitewater rafting on this river that had a big ass bridge about a half mile downriver from where we stopped. A bunch of the locals were jumping and said it was about 110-115'. It was a deep area but the current was decently fast, so it wasn't just a flat pool. Anyway, I jumped that once, obviously nothing fancy but with a pencil straight entry, and the impact still made my left thigh numb for an hour or so. This was five years ago or so.
I broke my back a year later, and I have severe scoliosis as a result of severe back injuries as a wee tyke.
Summer 2005, I jumped an 85-90 foot cliff into fairly still water, had a clean entry, and still ended up breaking my first lumbar vertebrae and my sternum. The impact also caused damage to my upper jaw, and in early July, I'll have my fourth surgery as a result. This was three or so years after the last time I broke my back.
So yeah, I'm not sure I'd recommend it, but it's totally up to you. I don't know if you have scoliosis or not, but it definitely weakens your back and can be the difference between a crazy adrenaline rush with a rad ending or many more months of pain, backbraces, and painkillers. It's your body and your risk, and I know that when people tell me I shouldn't do something, it just makes me want to do it that much more. Seriously consider the possible consequences, though. At just under 21-years-old, I have severe arthritis in my back and hips and am still dealing with multiple surgeries. This obviously won't necessarily happen to you, but it's something to think about.