I'm a little late on posting the pictures but I thought I would still share.
Around mid-January North Alabama received a large amount of rain over a few days. On my way home from work, I decided to pass by and see the condition of the Lim Rock Blowing Cave entrance as I know it is prone to flooding. Gaining access to the cave seemed to be harder than expected, but after some stepping stone crossings of the two creeks I only managed to get my feet slightly wet.
For copyright purposes I will link only to a picture of the dry entrance for comparison to the pictures I took.
Link: http://www.scci.org/preserves/limrock/limrockentrance2.jpg
These are the pictures I took that day.
Far off shot on approach trail:
Closer shot of entrance:
As the survey I have doesn't show passage elevation very well, I have no idea on how high the water would have to rise in the cave to reach the level it was at the day I went, but as the passage from the entrance to the stream under normal circumstances is is at a constant decline, I wouldn't be surprised to say 20 to 30 feet.
And for people familiar with the cave, the small sinkhole on the approach trail also had enough water flowing out that I had to climb up and over it on the ridge. This changed my philosophy on the hydrology of the cave, but also confirmed some.
I also took a picture for the interested:
I hope this post will interest people that have not seen the cave at it's flooded stage, and also be a warning to others of the danger the cave poses during rain events. I apologize for the picture quality, but they were taken via cellphone.