targeting native fish outcomes requirements) type may be considered in most years, if High account balance allows Maintain inundation of key Volumes and flow rates to be Whenever viable native fish or waterbird habitat determined based on specific opportunities arise CRITICAL Critical following unregulated events at event conditions Undertaken Opportunistic. key times where opportunities and Protect An appropriate use of water in Critical sufficient water 2016-17 should sufficient account balance opportunities arise. Critical allows Willandra creek Small fresh event (up to 18 GL 1-2 in 10 years @ Homestead Weir) targeting (unknown) wetland vegetation Very Low VERY LOW Very Low N/A Low potential for watering Very Low Carryover Level of carryover will A low to moderate potential Moderate proportion of available depend on proportion of available allocations expected to be carried environmental allocations may be into 2016-17 demands and carried over to 2017–18 resource availability. Trade potential Potential for purchases to augment water for the environment in a number of catchments in the northern Murray-Darling Basin to meet high environmental water demands (particularly in the Macquarie Marshes, Lower Balonne/Narran Lakes and Border Rivers). Further information will be provided to the market ahead of any trade of Commonwealth environmental water. Table 3c: Environmental demands, priority for watering in 2016–17 and outlook for coming years in the Lachlan – HIGH-VERY HIGH WATER RESOURCE AVAILABILITY IN 2016-17 Environmental Indicative demand Watering history 2016–17 Implications for future demands assets (for all sources of water in the system) (from all sources of water) Predominant urgency of Purpose Potential Commonwealth Likely urgency of demand in 2018–19 Met in environmental demand for under environmental water 2017–18 if watering occurred Range Flow/volume Required 2014–15 2015–16 water high contribution? as planned in 2016–17 of likely frequency resource demand (maximum dry (drying) (drying) (moderate) Not met in availability interval) 2017–18 Great Moderate Small fresh event (17-18 GL @ Cumbung Demand may be met through Booligal Weir) targeting 5 in 10 years N/A Moderate Swamp (Clear MODERATE inflows wetlands vegetation and (unknown) High Lake, Lignum waterbird habitat Lake, Reed beds) Medium scale event (50-60 3 in 10 years N/A Very Low Very Low VERY LOW Demand may be met through GL @ Booligal Weir) (unknown)
targeting native fish outcomes requirements) type may be considered in most years, if account balance allows High Maintain inundation of key native fish or waterbird habitat following unregulated events at key times Volumes and flow rates to be determined based on specific event conditions Whenever viable opportunities arise CRITICAL Undertaken where opportunities and sufficient water account balance allows Protect Opportunistic. An appropriate use of water in 2016-17 should sufficient opportunities arise. Critical Critical Critical Willandra creek Small fresh event (up to 18 GL @ Homestead Weir) targeting wetland vegetation 1-2 in 10 years (unknown) VERY LOW N/A Low potential for watering Very Low Very Low Very Low Carryover potential Moderate proportion of available allocations expected to be carried into 2016-17 A low to moderate proportion of available allocations may be carried over to 2017–18 Level of carryover will depend on environmental demands and resource availability. Trade potential Potential for purchases to augment water for the environment in a number of catchments in the northern Murray-Darling Basin to meet high environmental water demands (particularly in the Macquarie Marshes, Lower Balonne/Narran Lakes and Border Rivers). Further information will be provided to the market ahead of any trade of Commonwealth environmental water. Table 3c: Environmental demands, priority for watering in 2016–17 and outlook for coming years in the Lachlan – HIGH-VERY HIGH WATER RESOURCE AVAILABILITY IN 2016-17 Environmental assets Indicative demand (for all sources of water in the system) Watering history (from all sources of water) 2016–17 Implications for future demands Predominant urgency of environmental demand for water Purpose under high resource availability Potential Commonwealth environmental water contribution? Likely urgency of demand in 2017–18 if watering occurred as planned in 2016–17 2018–19 Range of likely demand Met in Flow/volume Required frequency (maximum dry interval) 2014–15 2015–16 (drying) (drying) (moderate) Not met in 2017–18 Great Cumbung Swamp (Clear Lake, Lignum Lake, Reed beds) Small fresh event (17-18 GL @ Booligal Weir) targeting wetlands vegetation and waterbird habitat 5 in 10 years (unknown) MODERATE N/A Demand may be met through inflows Moderate Moderate High Medium scale event (50-60 GL @ Booligal Weir) 3 in 10 years (unknown) VERY LOW N/A Demand may be met through Very Low Very Low
portfolio-mgt-plan-lachlan-2016-17.docx