Check out Fitzy's website (sweetwater) there's info there http://www.sweetwaterfishing.com.au/BrisBass.htm
Basically form the launching area below Wivenhoe Dam to the no go area upstream of Mount Crosby Weir. Some great water there.
Have a look on google maps to find out access points. The pool upstream of Twin Bridges could be a good start. Easy launching for canoes and yaks.
Luc