Page 266 - VEWH Seasonal Watering Plan 2020-21
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 5.5 Broken system
Table 5.5.2 Potential environmental watering for the upper Broken Creek and Broken River under a range of planning scenarios
 Planning scenario
   Drought
   Dry
   Average
   Wet
  Expected river conditions
 • No unregulated winter/spring flow in Broken River
• No natural flow in upper Broken Creek
• Low and cease-to- flow events possible throughout the year in all reaches
• No back trade opportunities
 • Low natural flow and odd freshes in Broken River
• No natural flow in upper Broken Creek
• Low and cease-to- flow events possible throughout the year in all reaches
• No back trade opportunities
 • High winter/spring flow in the Broken River
• Some unregulated winter/spring flow in upper Broken Creek
• Up to 1,500 ML back trade opportunity
in Broken River in summer/autumn
 • Winter/spring floods in the Broken River
• Winter/spring freshes in upper Broken Creek
• Up to 1,500
ML back trade opportunity available in Broken River in summer/autumn
 Expected availability of water for the environment
   • 0 ML
   • 0 ML
   • 647 ML
   • 647 ML
   Upper Broken Creek
   Potential environmental watering – tier 1a (high priorities)
   • N/A
   • N/A
   • One summer/autumn fresh
(partial, if required)
   • One summer/autumn fresh
(partial, if required)
   Potential environmental watering – tier 1b (high priorities with shortfall)
 • One summer/autumn fresh
• Summer/autumn low flow
• Winter/spring low flow
 • One summer/autumn fresh
• Summer/autumn low flow
• Winter/spring low flow
 • One summer/autumn fresh (remaining volume)
• Summer/autumn low flow (remaining volume)
• Winter/spring low flow
 • One summer/autumn fresh (remaining volume)
 Potential environmental watering – tier 2 (additional priorities)
   • N/A
   • N/A
   • N/A
   • N/A
   Broken River
   Potential environmental watering – tier 1a (high priorities)
   • N/A
   • N/A
   • N/A
   • N/A
   Potential environmental watering – tier 1b (high priorities with shortfall)
 • Year-round low flow
 • Year-round low flow
 • N/A
 • N/A
 Potential environmental watering – tier 2 (additional priorities)
  • N/A
  • Summer/autumn fresh
  • Summer/autumn fresh
  • N/A
 Possible volume of environmental water required to achieve objectives1
   • 0 ML (tier 1a)
• 5,510 ML (tier 1b)
   • 0 ML (tier 1a)
• 3,550 ML (tier 1b)
• 5,800 ML (tier 2)
   • 1,000 ML (tier 1a)
• 2,010 ML (tier 1b)
• 5,800 ML (tier 2)
   • 1,000 ML (tier 1a)
   1 Environmental water requirements for tier 2 actions are additional to tier 1 requirements.
    264 | Victorian Environmental Water Holder | Seasonal Watering Plan 2020–21
 

















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