You can try riverwood downs, just camp in the paddock area no matter how hard they push the creek side, sites are very small on the creek and the creek is a good drop down. If your group is large enough you could probably take up the whole paddock. Really good place for families with dog and kids because of the indoor barn for rainy days.http://www.riverwooddowns.com.au/
Anywhere in the Chichester State forest is good, small stream and drop toilets.
You have Windermere dam at Mudgee, Glenbawn Dam at Scone.
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