Sound track: listening to fish tales of environmental flows

River impoundment or damming together with flow regulation is implicated in the global decline in ‘health’ of riparian aquatic environments and river biodiversity, but in Australia there is broad variability to this picture depending on how river hydrology has been modified. For the Shoalhaven River in NSW the accumulating water demands from urban use, agriculture and industry for the greater Sydney region combined with increased frequency and duration of drought periods highlight the difficulties of managing low volume flow releases for environmental purposes. Continue reading