Place your logo here Making every drop count

Place your logo here Making every drop count Optimising outcomes through coordination BRISBANE, AUSTRALIA | 18 - 20 SEPTEMBER 2017 MANAGED BY Outline Environmental water in the context of a regulated river Making every drop count Coordinated releases Return flows Consumptive water en route

Coordination is key Bringing it all together Gunbower Forest bird monitoring, North Central CMA 2 Lower Broken Creek Hattah Lakes South Australia Murray River

Mulcra Island Goulburn River Gunbower Creek Gunbower Forest Campaspe River A typical northern Victorian river Unregulated flows

Natural flow (pre-regulation) System operating water Consumptive water Environmental water Making every drop count Highly connected and regulated One release of water can contribute to or achieve several environmental targets in different

locations Achieved through: use of consumptive water en route coordination with consumptive releases use of return flows Hattah Lakes, Kerry Whitelegg 5 Coordination is key Scientists & Community

Consumptive water en route Storage managers release water for consumptive demands downstream sometimes its possible to divert this water on the way or deliver in a way that meets environmental needs Environmental water is used to account for losses Gunbower Forest outfall, North Central CMA Mulcra Island, Mallee CMA 7 Coordinated releases Combining environmental and consumptive releases,

and unregulated flows, to achieve greater results Piggy-backing Campaspe River at Runnymede, North Central CMA Goulburn River at Mooroopna, Goulburn Broken CMA 8 Return flows Water is used in one system, then re-credited and used again further downstream Lower Lakes, Coorong and Murray Mouth Goulburn River at Hurricane Bend,

Photo: Keith Ward Hattah Lakes, Photo Mallee CMA 9 284 GL South Australia 17 GL Hattah Lakes Inundated 6,100 ha floodplain 76 GL environmental use

29 GL 39 GL 20 GL return flows 24 GL 39 GL return flow recredit Lower Broken Creek 34 GL environmental use/loss 29 GL return flow recredit River Murray 24 GL environmental use 24 GL return flow recredit

Mulcra Island Inundated ~440 ha floodplain 6.3 GL environmental use (losses) 1 GL return flows 0.4 GL return flows Goulburn River 309 GL of environmental use Gunbower Creek 0.8 GL environmental use (losses) 304 GL return flow recredit 0.2 GL return flows (losses) <0.1 GL return flows (losses)

Gunbower Forest Inundated over 3,750 ha floodplain forest and wetlands 96 GL consumptive water delivered 37 GL environmental use (losses) Campaspe River 30 GL environmental use 18 GL return flow recredit Summary Coordination at a Basin-scale to make every drop count Able to provide multiple environmental outcomes from the same bucket Increasing sophistication over time work ongoing to improve coordination and effectiveness

12 Place your logo here Thank you Contact: [email protected] BRISBANE, AUSTRALIA | 18 - 20 SEPTEMBER 2017 MANAGED BY

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