I'm just going to note that I was out on the Monroe Skyline two weekends ago -before the monsoons- and I was surprised at how muddy it was. Battell was running great, and I didn't bother going down to Glen Ellen. I didn't check the actual spring at Theron Dean, but I noted that there was a spring or stream of some sort running very well right below the Dean's Cave spur just to the north of the shelter, and more water past that. If the spring is dry, NOBO's might want to check within a 1/2 mile north up the trail. It's a great little shelter with a lovely view, and obviously little used as well (the outhouse was the cleanest I'd ever seen). The section from Theron Dean down to App Gap was hugely muddy, I went knee deep in one spot, so look before you leap.