Some more locations on this page
http://www.sweetwaterfishing.com.au/Goondiwindi.htm (http://www.sweetwaterfishing.com.au/Goondiwindi.htm)
Some of the other locations listed are probably better for cod / yellas than Serpentine Lagoon.
Rainbow Reserve is an off stream lagoon that fills in floods but is often not connected to the river. Plenty of carp there however.
Video from Lees Reserve
http://www.youtube.com/watch?v=rAoPa4i_G9c#ws (http://www.youtube.com/watch?v=rAoPa4i_G9c#ws)
Video from Yellowbank Reserve
http://www.youtube.com/watch?v=iPM07Rtkb-k#ws (http://www.youtube.com/watch?v=iPM07Rtkb-k#ws)
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