Fish communities of the Nepean River in the vicinity of Pheasant’s Nest Weir

The NSW government is committed to improving environmental flows in many of the regulated rivers in NSW. This involves increasing the amount of water released from storage dams to reverse past degradation of the ecological condition of these rivers. However, our poor understanding of the relationship between changes in flow and changes in fish communities restricts our ability to predict accurately how fish communities will respond to different environmental flow regimes.