Been to Nundle twice this year. Not much water flowing except after heavy rain. Even then it doesn't last long. 70mm rain in 2 days in October still did not provide enough water to run a small river sluice. River came up, river went down within a day. Peel River down from Bowling Alley Point was dry, even after October rain. Rain over the past few days might have changed things but I doubt it. Good news is that you can get down and dirty in the Peel as some spots that are often under water are dry. Bad news is that you need to take dirt to a waterhole to pan. There are still plenty of water in the Peel, but not much flow. Oakenville and other creeks are not flowing. Watch out for Tiger Leeches in the water pools. Big buggers. Hungry! Wear gumboots and keep watching around your boots as they are fearsome.
Plan to pan!