We were on the Upper San Juan this weekend camped at Pour-off our last night. A 25 person group from Flagstaff came in later in the day and decided to camp at what I'll call Upper Pour-off where the actual pour-off for the canyon exists. A girl was nonchalantly recording her conversation with her friends and family during a heavy rain storm under an overhang creek left of the pour-off. The canyon flashed and was quite exciting. Fortunately no one was in the drainage or injured during the event but they did loose some of their gear. Downstream we were alerted by a person from their group and started fishing duckies, drypags, paco pads, hats, kitchen boxes, etc... from the river. Then we went up to their camp to help out.