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Environmental watering in the Edward-Wakool River System 2011-13


30 June 2013: These actions have been completed.

Environmental watering 2011-12

About the watering

Commonwealth environmental water was delivered between October 2012 and April 2013 and was expected to contribute to the following outcomes:

  • support the movement, breeding and recruitment of native fish (such as Murray cod, and golden and silver perch)
  • support the habitat requirements of native fish and other native species including frogs, turtles and invertebrates
  • support ecosystem functions that relate to the connectivity of habitats along the watercourse.

The use of Commonwealth environmental water will help build on the outcomes of environmental water provided to the Edward-Wakool River System in previous years.

Environmental watering 2011-12

Fish refuge habitat flows – Autumn 2012

In March 2012, 59.6 GL of Commonwealth environmental water was made available for use in the Edward-Wakool River System, New South Wales. In total 39.4 GL of Commonwealth environmental water was delivered to the Edward River, Wakool River and Yallakool Creek in conjunction with 0.3 GL of water provided by the New South Wales Government.

The water was used to provide and maintain important refuge habitat for remnant fish populations, particularly Murray cod, from hypoxic blackwater (water containing low levels of oxygen) that can severely impact fish.

Commonwealth environmental water was delivered using Murray Irrigation Limited infrastructure, and continued from water delivered by the Murray-Darling Basin Authority.

This watering action also contributed to the outcomes of environmental watering in the mid-Murray River system (refuge habitat and replenishment flows).

The watering action was managed in cooperation with the New South Wales Office of Environment and Heritage, Murray-Darling Basin Authority, Murray Catchment Management Authority, New South Wales Office of Water, State Water Corporation, and Murray Irrigation Limited.