Page 204 - VEWH Seasonal Watering Plan 2020-21
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 5.2 Victorian Murray system
Table 5.2.2 Potential environmental watering for the Barmah Forest under a range of planning scenarios
 Planning scenario
  Drought
    Dry
  Average
  Wet
  Expected river conditions
 • Unregulated flow periods unlikely
• Flows in the Murray River will remain within channel all year
   • Some small unregulated flow in late winter/spring
• Low chance of overbank flows in late winter/spring
 • Likely chance of small-to-medium unregulated flow in winter/spring
• Likely chance of overbank flows in winter/spring
   • High probability of moderate-to-large unregulated flow in winter/spring
• Expected large overbank flows
   Potential environmental watering – tier 1 (high priorities)1
• Winter/spring low flow
• Spring/summer freshes
• Spring/summer/ autumn freshes to Gulf and Boals creeks
  • Winter/spring low flow
• Spring/summer freshes
• Spring/summer/ autumn low flow
• Fill or top up
Boals Deadwood, Harbours Lake, Reedy Lagoon and Top Island wetlands
• Winter/spring low flow
• Spring/summer freshes
• Spring/summer/ autumn low flow
• Fill or top up
Boals Deadwood, Harbours Lake, Reedy Lagoon and Top Island wetlands
• Spring wetting of floodplain marshes
• Autumn/winter low flow
  • Winter/spring low flow
• Spring/summer freshes
• Fill or top up
Boals Deadwood, Harbours Lake, Reedy Lagoon and Top Island wetlands
• Spring wetting of floodplain marshes
• Autumn/winter low flow
 Potential environmental watering – tier 2 (additional priorities)
  • Spring wetting of floodplain marshes
  • Spring wetting of floodplain marshes
       Possible volume of environmental water required to achieve objectives2
 • 8,500 ML (tier 1)
   • 51,500 ML (tier 1)
 • 566,000 ML (tier 1)
   • 570,000 ML (tier 1)
  1 Tier 1 potential environmental watering at Barmah Forest is not classified as tier 1a or 1b because the water available for use is shared across various systems, and it is not possible to reliably determine the supply specifically available for Barmah Forest.
2 The possible volumes of water for the environment required in Barmah Forest are estimates and highly variable, depending on factors such as seasonal conditions and the contributions of operational and/or unregulated flows. Much of the environmental water delivered to Barmah Forest is returned to the River Murray — around 80 percent in the dry to wet scenarios — and can be re-used at downstream environmental watering sites.
              202 | Victorian Environmental Water Holder | Seasonal Watering Plan 2020–21
 

















































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