In reply to james.slater:
Devil's gorge conditions are very difficult to predict; often the only way to know for sure is to go and find out - even a report from the night before can be inaccurate.
The main thing to avoid is any recent rise in temperature - the warm/still air in the gorge condenses out against the cooler rock resulting in
very greasy conditions!
Seepage wise, I didn't see any issues when visiting ~weekly during August and early September. The lack of daylight has stopped me going after work and my project probably won't get done this year