Overland Corner

• Location: River Chainage Markers 431 to 423 km (below Lock 3)
• Land Tenure: Crown Record 
• Wetland Size: 450 hectares (Ha)
• Normal Pool Level: 6.2 mAHD (downstream of Lock 3) and 7.0 maHD (upstream inlet)

Overland Corner wetland complex complements other wetlands nearby, providing a network of temporary and permanent aquatic habitat and was therefore given a moderate to high ecological value[1,2]. Overland corner consists of a number of temporary wetlands which get inundated during River Murray flood events[3 ].

The dominant wetland vegetation types on the floodplain include river red gum (Eucalyptus camaldulensis) and black box (Eucalyptus largiflorens) woodland, lignum and samphire shrubland, and sedgelands, see references for further details of species composition at site[3,4 ]

Seven frog species have been recorded at Overland Corner among them the vulnerable southern bell frog (Litoria raniformis). The diversity of frog species at Overland Corner is considered to be high compared to other wetlands in the Riverland[3,4]. The wetland also supports important habitat for wetland birds, migratory bird species and the vulnerable regent parrot (Polytelis anthopeplus monarchoides). 

• Berri Barmera Council
• Berri Barmera Landcare
• Central Irrigation Trust (CIT)
• Commonwealth Environmental Water Office (CEWO)
• Murraylands and Riverland Landscape Board
• National Parks and Wildlife SA
• National Trust of SA
• Private Landholders
• River Murray and Mallee Aboriginal Corporation (RMMAC)
• Regent Parrot Recovery Team
• SA Water
• Murray Darling Basin Authority (MDBA)

1. Jensen A, South Australia, Department of Environment and Natural Resources, South Australian River Murray Wetlands Management Committee. Wetlands atlas of the South Australian Murray Valley: a summary of current knowledge of Murray Valley wetlands as a basis for integrated catchment management. Adelaide: Dept. of Environment and Natural Resources; 1996.
2. Thompson MB. River Murray Wetlands - Their Characteristics, Significance and Management. Adelaide: University of Adelaide for the Department of Environment and Planning and the Nature Conservation Society of South Australia; 1986.
3. Robertson H. Overland Corner Wetland Mangement Plan- February 2007. Prepared for the Overland Corner Wetland Group, National Trust of South Australia and the Berri Barmera Local Action Planning Commitee; 2006.
4. SKM. River Murray Wetlands Baseline Survey – 2005. South Australian Murray Darling Basin Natural Resources Management Board.; 2006.
5. Grealish G, Shand P, Grocke S, Baker A, Fitzpatrick R, Hicks W. Assessment of Acid Sulfate Soil Materials in the Lock 1 to Lock 5 Region of the Murray-Darling Basin. CSIRO: Water for a Healthy Country National Research Flagship.; 2010.

Click   here   to download the Lock 3 Reach Master Plan

Development of the master plan began in July 2019 as an initiative of the South Australian Government’s South Australian Floodplains Integrated Infrastructure Program (SARFIIP) a $155 million investment program funded by the Australian Government through the Murray Darling Basin Authority and implemented by the South Australian Government to improve the watering and management of River Murray floodplains in South Australia’s Riverland.

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