The purpose of this report was to report the current extent of salinisation of the Tweed River and Gnowergerup Brook catchments, and to project what may happen in the future under a range of salinity mitigation options (management scenarios). The effectiveness of each scenario is assessed by comparing it to the base case scenario (‘do nothing’ scenario).
The Tweed River and Gnowergerup Brook are in the middle of the Blackwood basin and flow directly into the Blackwood River. Land-use activities that influence stream salinity in these subcatchments eventually affect the salinity of the Blackwood River.