I was high enough to submerge the cell phone in my seat pack.
Of course, the bike was upside down.
It was about knee deep and fairly cold, especially on a low 50* day and you're 30 minutes into a 2 hour ride.
There is a see saw set up on the bridge. It's a 14' 2"x8" over a log that you ride up one side and hopefully down the other. Or you can do the sensible thing and just ride over the bridge.
My buddy went first, made it just past the log then hopped off the side and kept going. I made it to about the same point but was going a bit faster and couldn't get turned on the narrow bridge. I almost bailed out in time.
The bike flipped and I went in feet first. I have my phone sitting in front of the air for the stove trying to dry it out now. Hoping just a new battery will be all it takes.