Flows in the River Murray System for August 2023

Flows in the River Murray System vary widely depending on a range of factors, including rainfall, inflows, evaporation, and demands for water from all users.

Published: 14 September 2023

At any given time, water flowing through the river is destined for various uses, including irrigation, industry, communities, the environment, and meeting South Australia’s flow entitlement.

The exact mix of these flow components is determined by a number of factors including demand and water availability.

Each month we provide an update showing flows in the River Murray System including the total volume of water flowing for consumptive use and to care for the environment. The update also outlines the intended environmental outcomes.

Flows in the River Murray System

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Infographic showing river flow rates and percentages of environmental water and other flows.
Information in the figure above is for the month of August 2023 and may not include recent rainfall or delivery of water for the environment in the River Murray system. Information in this figure is an average estimate over the past month and formal accounts from Basin state governments may vary. Water for the environment in the figure above represents water that is held by environmental water holders, through entitlements. Other water that flows through the river can also achieve environmental outcomes.

River flow information 

The August flow to South Australia included unregulated flows, water for South Australia’s entitlement, traded volumes and water for the environment. Water for the environment at the South Australian border comes primarily from return flows from upstream environmental water use.

For the latest information on water for the environment see the River Murray weekly report.

Intended environmental outcomes 

Water for the environment takes time to move through the system. Water from past watering events is still moving through the River Murray as return flows. Environmental water holders can also use water for the environment by extracting allocations directly from the river. These allocations are often used for small-scale watering events rather than having water delivered from a storage.

Location Return flows used at site Intended environmental outcomes
Edward/Kolety-Wakool River system No
  • Maintain and improve large-bodied native fish populations (such as Murray cod).
Lower Broken Creek No
  • Provide native fish passage through fish ladders.
  • Reduce stagnation in weir pools.
  • Provide habitat for platypus, fish and turtles.
Goulburn River n/a
  • Provide habitat for native fish, waterbugs, platypus and turtles.
Gunbower Forest No
  • Fill of key wetlands and surrounding forest, supporting the growth and recruitment of wetland and river red gums vegetation. 
  • Increase water depth and quality to support native small-bodied fish, turtles and frogs.
Gunbower Creek No
  • Maintain habitat and food resources for native fish and support breeding and larval survival.
Great Darling Anabranch n/a
  • Maintain native fish populations, with particular focus on the dispersal of golden perch from Lake Cawndilla to the Murray.
Lower Darling-Baaka River n/a
  • Improve dissolved oxygen levels and water quality.
  • Improve habitat for native fish including stable flows to support Murray cod nesting.
Lower Lakes, Coorong and Murray Mouth Yes
  • Provide cues for movement and recruitment of diadromous fishes, such as lamprey and congolli.
  • Salt export via the Murray Mouth.
  • Improve water quality in the Coorong to support native fish, plants, invertebrates and waterbirds.

Contact the MDBA media office at media@mdba.gov.au or 02 6279 0141.