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If more water is available, the next priorities under all scenarios will be to deliver summer/autumn low flow through to the end of reach 3. Under the dry and average scenarios, additional priorities will be to provide winter/ spring low flow in reach 1b, with summer/autumn freshes through to reach 3 in average conditions only. Delivering winter/spring freshes through to reach 2 under the dry
and wet scenarios is a high priority, to support streamside vegetation and provide additional flows to increase access for native fish and platypus to feeding and breeding habitat.
Reserving water for carryover into the 2021–22 water year will be a priority under all scenarios, to ensure sufficient water is available to deliver the highest-priority flows during summer and autumn 2022. The volume carried over against the Wimmera-Glenelg environmental entitlement will be decided in consultation with the Wimmera and the Glenelg Hopkins CMAs during the year, and it will be based on use during 2020–21, seasonal conditions and seasonal outlooks for 2021–22.
Table 4.2.2 Potential environmental watering for the Glenelg River under a range of planning scenarios
4.2 Glenelg system
 Planning scenario
   Drought
   Dry
   Average
  Wet
  Expected river conditions
 • Low volumes of passing,
compensation and natural flow
 • Some passing, compensation and natural flow
 • Some passing, compensation and significant natural flow, particularly in winter/spring
 • Passing, compensation and natural flow meet some watering requirements in winter/spring
   Expected availability of water for the environment1
   • 19,600 ML
   • 36,635 ML
   • 50,426 ML
   • 60,160 ML
   Potential environmental watering – tier 1a (high priorities)2
 • Summer/autumn low flow reach 1b
• Summer/autumn low flow reach 2
 • Summer/autumn low flow reach 1a
• Summer/autumn low flow reach 1b
• Summer/autumn low flow reach 2
• Two summer/autumn freshes reach 1a
• Two summer/autumn freshes reach 1b
• Two summer/autumn freshes reach 2
• Two summer/autumn freshes reach 3
 • Summer/autumn low flow reach 1a
• Summer/autumn low flow reach 1b
• Summer/autumn low flow reach 2
• Three winter/spring freshes reach 1b
• Three winter/spring freshes reach 2
• Two summer/autumn freshes reach 1b
• Two summer/autumn freshes reach 2
• Winter/spring low flow reach 1a
 • Summer/autumn low flow reach 1a
• Summer/autumn low flow reach 1b
• Summer/autumn low flow reach 2
• Two summer/autumn freshes reach 1a
• Two summer/autumn freshes reach 1b
• Two summer/autumn freshes reach 2
• Two summer/autumn freshes reach 3
• Winter/spring low flow reach 1a
• Winter/spring low flow reach 1b
   Potential environmental watering – tier 1b (high priorities with shortfall)2
   • Summer/autumn low flow reach 1a
• Summer/autumn low flow reach 3
• Two summer/autumn freshes reach 1a
• Two summer/autumn freshes reach 1b
• Two summer/autumn freshes reach 2
• Two summer/autumn freshes reach 3
   • Summer/autumn low flow reach 3
• Two winter/spring freshes reach 1b
• Two winter/spring freshes reach 2
• Winter/spring low flow reach 1a
• Winter/spring low flow reach 1b
   • Summer/autumn low flow reach 3
• Two summer/autumn freshes reach 1a
• Two summer/autumn freshes reach 3
• Winter/spring low flow reach 1b
   • Five winter/spring freshes 1b
• Five winter/spring freshes reach 2
• Summer/autumn low flow reach 3
   Victorian Environmental Water Holder | Seasonal Watering Plan 2020–21 | 151
 






























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