Since I am finally able to talk about this, I thought a wrap-up would be nice. The cold front did indeed come through, so we began our hike with temps in the 30's and snow falling. Took a portable tripod, D800, 14-24 and 24-70. Clothing was either waterproof or synthetic. Pack was a Camelback Mule, with around 3 quarts of water. Had walking poles, which I hadn't used before. Anyhow, about 2 miles in I slipped on one of the many stream crossings (quite a bit of water for this time of year) and went into the stream back first. My pack flooded and became heavy. Water came down my neck and soaked my inner layers. The weight coupled with my inability to use my hands/arms due to the poles kept me in the water until I could be pulled out. Nothing to do but keep moving and get back to the car as soon as possible. No problem getting out, and the synthetics kept me relatively warm. So I still haven't been to The Subway! Aftermath...camera was fine in a zip-lock bag. Lenses were only wrapped in newspaper type plastic bags as I didn't anticipate a total submersion for a couple of minutes, so they were drenched. Got them dried out and put in bags of rice. The 24-70 seemed OK and I used it in Zion later that day. But as a precaution sent both lenses to Nikon where they were disassembled and put back into tip top condition. Water intrusion was found. Cost was $600 each, thank goodness for insurance. The repair took less than 3 weeks including shipping, thank you Nikon Los Angeles. Singh-Ray cleaned and repaired 2 filters...great company and I highly recommend doing business with them. Anyhow, I'm sure there was a lesson to be learned in all of this, but I don't really know what it is! Maybe it is simply that I am too old to do something like this!