Page 211 - VEWH Seasonal Watering Plan 2020-21
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 Table 5.2.5 Potential environmental watering actions and objectives for Gunbower Creek and Forest (continued)
5.2 Victorian Murray system
     Potential environmental watering action
Little Gunbower wetland complex (fill in autumn/ winter 2021)
Little Reedy wetland complex (including Green Swamp, Corduroy Swamp and Little Reedy Lagoon) (fill in autumn/winter 2021)
Extend natural flooding
in Gunbower Forest floodplain, floodrunners and wetlands (with variable flow rates to maintain an appropriate wetted extent during winter/spring)
Gunbower Forest floodplain, floodrunners and wetlands (with variable flow rates during autumn/winter 2021)
Gunbower Creek
Autumn/winter low flow (above 200 ML/day during May to August)
Spring/summer/autumn low flow (targeting a gradual increase, stable flow period and decrease in flows ranging between 300-500 ML/day during August to May)1
Autumn/winter fresh
(500 ML/day for one to four weeks during May
to August)
Functional watering objectives
• Increase water depth and extent to trigger wetland plants to germinate in late winter and early spring
• Provide feeding and refuge habitat for waterbirds, turtles and frogs • Provide habitat for small-bodied native fish
• Increase water depth and extent to trigger wetland plants to germinate in late winter and early spring
• Provide feeding and refuge habitat for waterbirds, turtles and frogs • Provide habitat for small-bodied native fish
• Wet river red gum, black box and grey box communities
• Provide access to breeding habitat and food resources for native fish (such as Murray cod)
• Provide refuge habitat for frogs, turtles and waterbirds including colonial nesting species
• Wet river red gum, black box and grey box communities
• Provide access to breeding habitat and food resources for native fish (such as Murray cod)
• Provide refuge habitat for frogs, turtles and waterbirds including colonial nesting species
• Maintain habitat and food resources for native fish (such as Murray cod) during the non-irrigation season
• Maintain breeding habitat and food resources for native fish (such as Murray cod)
• Provide cues for the migration and spawning of native fish
• Dilute low-oxygen water exiting Gunbower Forest below Koondrook Weir if required
• Deliver in response to high flow in Murray River and low oxygen water draining off Gunbower Forest during the non-irrigation season to protect water quality and allow fish to move between Murray River and Gunbower Creek
Environmental objectives
                                                                                         1
Flows may be delivered at the upper end of the range — 500 ML per day — at any time between August 2020 and May 2021 in response to unregulated flow in the Murray River or to mitigate the potential impacts of low-oxygen water exiting the Gunbower Forest below Koondrook weir.
  Victorian Environmental Water Holder | Seasonal Watering Plan 2020–21 | 209

































































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