Page 123 - VEWH Seasonal Watering Plan 2020-21
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Table 3.6.2 Potential environmental watering for the Moorabool River under a range of planning scenarios
1 The expected availability of water for the environment is the estimated volume of water that may be held in the VEWH’s share of storage capacity in Lal Lal Reservoir during 2020–21 under drought, dry, average and wet scenarios. The Moorabool River Environmental Entitlement 2010 entitles the VEWH to up to 7,500 ML of water from the VEWH’s share of storage capacity in any consecutive three-year period including the current year, so the volume of water available to be delivered may be less than the total expected water availability.
2 Environmental water requirements for tier 2 actions are additional to tier 1 requirements.
3.6 Moorabool system
 Planning scenario
   Drought
   Dry
   Average
   Wet
   Expected river conditions
 • Regular periods of no flow in some reaches
 • Periods of no flow or very low flow in some reaches
 • Continuous flow with low flow over summer and high peaks in winter months
 • Continuous flow year-round
• Bankfull flows persistent throughout winter
• Overbank conditions in some parts during spring/autumn
 Expected availability of water for the environment1
   • 3,900 ML
   • 4,700 ML
   • 5,700 ML
   • 7,700 ML
   Potential environmental watering – tier 1a (high priorities)
 • Summer/autumn fresh (trigger based)
• Summer/autumn low flows
• Winter/spring low flows
• Autumn fresh
 • Summer/autumn fresh (trigger based)
• Summer/autumn low flows
• Winter/spring low flows
• Autumn fresh
• Summer fresh
 • Summer/autumn low flows
• Winter/spring low flows
• Autumn fresh
• Summer fresh
• Spring fresh
 • Summer/autumn low flows
• Winter/spring low flows
• Autumn fresh
• Summer fresh
• Spring fresh
• Winter fresh
• Spring fresh
• Summer fresh
 Potential environmental watering – tier 1b (high priorities with shortfall)
  • Summer fresh
• Spring fresh
• Winter fresh
• Spring fresh
• Summer fresh
  • Spring fresh
• Winter fresh
• Spring fresh
• Summer fresh
  • Winter fresh
• Spring fresh
• Summer fresh
   Potential environmental watering – tier 2 (additional priorities)
  • As per tier 1, but at higher peak flows
  • As per tier 1, but at higher peak flows
  • As per tier 1, but at higher peak flows
  • As per tier 1, but at higher peak flows
 Possible volume of environmental water required to achieve objectives2
  • 2,318 ML (tier 1a)
• 4,860 ML (tier 1b)
• 6,600 (tier 2)
   • 2,508 ML (tier 1a)
• 4,433 ML (tier 1b)
• 6,600 (tier 2)
   • 2,461 ML (tier 1a)
• 3,735 ML (tier 1b)
• 6,600 (tier 2)
   • 1,682 ML (tier 1a)
• 6,600 (tier 2)
  Priority carryover requirements
  • Up to 1,000 ML
     Victorian Environmental Water Holder | Seasonal Watering Plan 2020–21 | 121
 





















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