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Lower Lakes, Coorong and Murray Mouth

Environmental water through the barrages at the Murray Mouth is critical for migratory native fish and helps to improve salinity levels
Environmental water through the barrages at the Murray Mout(Photographer: Adrienne Frears, SA Department of Environment, Water and Natural Resources)

The Lower Lakes, Coorong and Murray Mouth icon site — where the River Murray meets the Southern Ocean — is in South Australia. Covering over 140,000 ha, it includes 23 different wetland types that range from very fresh water to saltier than the sea.

As a complex estuarine environment, this site is one of 10 major Australian havens for large concentrations of wading birds and is recognised internationally as a breeding ground for many species of waterbirds and native fish.

Our vision for the Lower Lakes, Coorong and Murray Mouth icon site is to promote a healthier Lower Lakes and Coorong estuarine environment.

More information about the ecological objectives for the Lower Lakes, Coorong and Murray Mouth

Environmental delivery

Murray Mouth, where the River Murray joins the Southern Ocean
Murray Mouth, where the River Murray joins the Southern Ocean(Photographer: MDBA staff)

Environmental watering helps deliver flows over the barrages at the Lower Lakes. This keeps the Murray Mouth open, maintaining the connection between the Murray and its estuary. This is critical for migratory native fish movement and helps improve salinity levels in the Coorong.

Environmental water management plan

A revised environmental water management plan has been developed, which documents the icon site's environmental water requirements and how to broadly achieve them with a combination of environmental water and barrage operation.

TLM environmental works and measures

Cape Barren geese, the Coorong
Cape Barren geese, the Coorong

No environmental works and measures are planned for the Lower Lakes, Coorong and Murray Mouth.

TLM environmental monitoring

We monitor the environmental health of the Lower Lakes, Coorong and Murray Mouth icon site to assess whether we are meeting its needs under The Living Murray objectives.

Looking for more information?

Back to Environmental sites in the Basin

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