I have fished there many years ago at the dam wall and got bass - redfin - and carp . You will see people throwing bread into the water and if the ducks don't get it first the carp will go for it .
I fish the Parramatta River with lures for bream around boats and wharfs and have fround heaps of bream to be had just get the lures working right and you should be into some bream.