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 5.5 Broken system
Table 5.5.1 Potential environmental watering actions and objectives for the upper Broken Creek and Broken River
 Potential environmental watering action1
  Functional watering objectives
  Environmental objectives
  Upper Broken Creek
    Summer/autumn fresh (one fresh of 10-100 ML/day for 10 days during December to May as needed)
    • Maintain water quality, particularly oxygen levels, in refuge pools
                 Summer/autumn low flow (one to five ML/day during December to May)
   • Maintain pool and riffle habitat for native fish populations and waterbugs
• Maintain access to habitat and food resources for platypus
• Maintain habitat for in-stream vegetation
           Winter/spring low flow (five to 10 ML/day during June to November)
    • Maintain pool and riffle habitat for native fish populations and waterbugs
• Maintain access to habitat and food resources for platypus
• Maintain habitat for in-stream vegetation
             Broken River
   Year-round low flow (five to 15 ML/day)
• Maintain riffles, slackwater and pools to provide diverse hydraulic habitat for native fish, aquatic plants, platypus and waterbugs
• Maintain habitat for in-stream and fringing vegetation, and prevent terrestrial vegetation colonising the stream bed
            Summer/autumn freshes (400–500 ML/day for two to eight days during December to May)
• Scour sediments around large wood, and turn over bed sediments to replenish biofilms and increase productivity
• Provide flow cues to stimulate native fish to breed and migrate
• Provide flow to maintain in-stream and fringing aquatic vegetation
• Maintain longitudinal connectivity for native fish passage
         1 Watering actions are listed in priority order and upper Broken Creek watering actions are higher priority than Broken River watering actions.
    262 | Victorian Environmental Water Holder | Seasonal Watering Plan 2020–21
 







































































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