Received this from a friend yesterday:

Here are pictures chronicling search and rescue operations involving multiple, helicopter-inserted teams and sweeps. Picture 67 says a crossing was reported to be waist deep on the night of 7-29-11.

http://www.flickr.com/photos/rockwellb/sets/72157627194409465/

What's amazing to me in your link is the number of people who said there was thunder and lightning and yet they continued on to the summit.
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dk