Catfish Billabong Environmental Structure

Project Overview

Catfish Billabong is a 65-hectare wetland. It’s situated within the Merbein Common Flagship Waterway Site and is identified by the Mallee Waterway Management Strategy (MWMS) as a priority for management particularly for the high environmen­tal, social, and cultural heritage values it supports.

When river flow peaks are available in winter and spring, it will be possible to retain water in the Billabong and therefore, provide reliable seasonal flooding. This process replicates a more natural state giving local flora and fauna opportunities to benefit. The Billabong supports 29 fauna and 12 flora species which are listed under international agreements.

Additionally, the works will also increase opportunities for the wider community to engage in recreational activities such as fishing, canoeing, camping, bird watching, and hiking. The Billabong provides an important refuge for bird and fish species and supports important cultural values, creating opportunities for Traditional Owners to share their cultural knowledge with the Aboriginal community.

Projects – Mallee CMA

Fast Facts

  • ClientMallee Catchment Management Authority (MCMA)
  • LocationMerbein, VIC
  • Year of Completion 2022

Scope of works

The design and construct scope includes:

  • A 190m long sheet piled retaining wall and cast in-situ concrete regulating structure, including a combination undershot/ overshot gate
  • Localised earthworks include erosion protection of the retaining wall and regulating structure
  • A formed access track
  • A 3m wide crossing on the environmental structure inlet/outlet channel, connecting the billabong to the River Murray. This construction work involves extending the existing concrete floor/walls as well as constructing a suspended concrete bridge deck to protect two significant large native River Red Gum trees. The crossing will provide pedestrian and vehicular access along the River Murray foreshore, especially, reducing response timeframes for emergency services.

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