There is gold to be found all the way down the Abercrombie to Wyangala dam.
Getting in there is the battle these days.
At the junction of the Copperhannia creek is the old Sounder claim, a sedimentary deposit from an ancient river system which ran in the hills above and parallel to the Mountain Run/Copperhannia system.
Gold found in the Copperhania has been, in the main, eroded out of and transported down slope to the creek.
Sluicing water for the Sounder claim was via an aqueduct built above and on the Eastern side of the Copperhannia over a length of around 10km.
The Sounder claim was worked by the Knowles family over a period of nearly 30 years, there is a small family cemetery there.
Further downstream on the Abercrombie, the Rocky bridge Creek joins in. This was also worked for gold right up to its source below Trunkey Creek village.
A little further down from this junction an old stamper can be found and when the dam water is low the remains of the mining village seen.
The Bathurst Metallogenic 1:250000 map sheet will provide you with much information.
Good luck
Mike