supply measure projects south australia · project. south east flows. chowilla floodplain....
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Supply Measure ProjectsSouth Australia
Diane FavierMurray-Darling Basin Policy and Strategy
Department for Environment and Water
June 2018
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Supply Measures
• Proponent for five projects• Co-proponent for seven projects
– The Living Murray projects– Enhanced Environmental Water Delivery
project
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South East Flows
Chowilla Floodplain
Riverland Floodplain
SARFIIP
Riverine Recovery Project
Flows for the Future
SA River Murray
Constraints
Six projects located in SA
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Chowilla Floodplain TLM• Regulating structure and other works on
Chowilla Creek and wetlands (Ramsar site)• Water up to 4,000 ha at flows of 10,000 ML/day • Objectives
– maintain high-value wetlands – maintain the current area of river red gum forest (largest remaining in the Lower
Murray region)– maintain at least 20 per cent of the original area of black box vegetation
• Completed in 2014 and being operated• Community and Indigenous groups input to
management
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SLIDES FROM RC Main regulator – Chowilla Creek
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Chowilla The Living Murray projectBefore operation
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Chowilla The Living Murray projectAfter operation
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BEFORE
AFTER
Chowilla Floodplain
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Riverine Recovery Project (RRP)• Regulating structures, fishways and operational
changes to return wetlands to more natural wetting and drying
• Water savings transferred to CEWH• Will be completed by end June 2019 • Objectives
– improved management of weir pools, anabranches, floodplains & wetlands– more diverse habitats and productive and diverse plants and animals– reduced impacts of carp
• Landholders, community and Indigenous groups engaged in design and management
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Sample of wetland sites
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South Australian Riverland Floodplains Integrated Infrastructure Program (SARFIIP)
• Regulating structures, levee banks, and saline groundwater management schemes
• Water at low flows of 10,000-15,000 ML/day• Objectives
– Improve health of the diverse range of terrestrial and aquatic habitats, including Black Box, River Red Gum, Lignum communities and wetlands
• Construction began in 2016 (end date of 2020)• Community and Indigenous groups input to
design and implementation
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Pike – Margaret Dowling Regulator
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Pike floodplain inundation map
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Flows for the Future (F4F)• Supply and install low flow devices on dams
and watercourse diversions in Eastern Mount Lofty Ranges
• Objectives– Reinstate more natural flow patterns– Increase flow to Lower Lakes and Coorong
• Commenced in 2017 (end date of 30 June 2022)• Initial consultation in 2011• Ongoing direct engagement with landholders
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Example low flow device
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South East Flows Restoration Project
• Extension of the South East drainage system to supply water to South East wetlands and the Coorong South Lagoon
• Objectives– assist salinity management in Coorong South Lagoon,– enhance wetlands in the Upper South East – reduce drainage outflow at Kingston beach
• Construction began in 2017 (end date of 2018)• Community and Indigenous groups input to
design and implementation
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Taratap drain before Taratap drain after
Blackford diversion site before Blackford diversion site after
Reference location for before and after
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SA River Murray Constraints• Works & measures to enable managed higher
flow events – up to 80,000 ML/day– e.g. crossings, flood proofing assets, easements– 80,000 ML/day at the border inundates 116,117 ha
• Links with NSW and Victorian projects• Objectives
– improve wetland and floodplain health with more frequent over-bank flows between 40,000 to 80,000 ML/day
– reduce inundation risks on low lying areas from natural and managed flows
• Continue to work with private landholders, councils and public land managers
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Enhanced Environmental Water Delivery Project (EEWD)• SA, Victoria and NSW • Step-change in forecasting, planning and
coordination of environmental water use• Objective
– optimise benefits from available environmental water– coordinate managed flows and natural inflows & optimise watering with
constraints addressed
• Business case approved• Engage with water holders and managers as well
as communities and Indigenous groups
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Enhanced Environmental Water Delivery method
Jun Nov
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Jul Aug Sept Oct
Regulated flow boundary (constraint)
River operator
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Targeted trigger
Flow trigger
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Websites for more information• www.mdba.gov.au/basin-plan-roll-out/managing-
constraints• https://www.environment.sa.gov.au/topics/river-
murray/basin-plan/adjustment-to-the-sustainable-diversion-limit
• https://www.mdba.gov.au/basin-plan-roll-out/sustainable-diversion-limits/sdl-adjustment-proposals-state-projects
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