You can search the text to find all the references to the Wollondilly and other places, but the Rev Clarke notes that gold exists in "small quantities."
Another report again hints that gold was small and sparse on the Wollondilly.
I don't know of any gold fields or rushes for the Wollondilly. That is not to say you won't find anything, but you might be better starting off at Tuena, Oallen or somewhere where there is a better chance of finding something.