Lee - It was quite dry when we were there. A park ranger took us on a hike of Cedar Falls, and he referred to it as Cedar Trickle. Ash Cave had no water coming over the lip; Old Man's Cave had water flowing below, but not much.
Here is one photograph from our trip, on Kodachrome: http://flic.kr/p/8PeTjb
I'll scan more and post them later.
Looking forward to the February trip - it should be a good time for black and white photography.