There is usually a bit of rain to be had in that region around this time of the year (Country Music Festival usually coinsides with the occasional flood or atleast some useful rain). If there isn't any rain of any substance to be had between now and mid Feb, then I think it's safe to say we are in for a nasty drought...
I tend to bring my drinking water. I'll probably settle for the dam for most other purposes.
Missing a shower or 2 is all part of the camping experience!