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Environmental watering in Broken Creek 2011-13

Photo: Broken Creek at Numurkah ©Mattinbgn, Flickr

Status

July 2013: This action has been completed.

March 2013 - Upper Broken Creek

51 ML of Commonwealth environmental water was used during February-March 2013 in the upper Broken Creek to contribute to:

  • providing more natural flow variability
  • providing a wet dry zone at the channel edge
  • maintaining habitats during periods of cease to flow consistent with patterns from storms
  • promoting successional change in plant and animal community composition through disturbance and habitat diversity.

This action was managed in partnership with the Victorian Environmental Water Holder, Goulburn-Murray Water and the Goulburn Broken Catchment Management Authority.

Gum trees line Broken Creek ©MDBA Photographer: David Kleinert

July 2012 – Lower Broken Creek

41,230 ML of Commonwealth environmental water was used in the lower Broken Creek to contribute to enhancing the baseflows in the lower Broken Creek from September 2012 and May 2013. The enhancement of these flows aimed to:

  • facilitate fish movement through the fishway at Rices Weir
  • maintain native fish habitat, particularly during fish migration and breeding seasons (by maintaining optimal levels of dissolved oxygen and restricting excessive aquatic plant growth)
  • increase flows to the lower River Murray channel, Lower Lakes and Coorong for the purpose of maintaining aquatic habitat, supporting targeted lake levels, barrage releases and flows through the barrage fishways.

This watering action was managed in cooperation with the Victorian Environmental Water Holder, Goulburn-Murray Water, Goulburn Broken Catchment Management Authority and the South Australian Department of Environment, Water and Natural Resources.

December 2011 – Lower Broken Creek

10,366 ML of Commonwealth environmental water was used in the lower Broken Creek to contribute to enhancing the baseflows in the lower Broken Creek from December 2011 to May 2012 (action suspended late February-early May 2012). The enhancement of these flows aimed to support native fish habitat, particularly for large-bodied species such as the nationally vulnerable Murray cod, by:

  • maintaining water quality and dissolved oxygen levels
  • providing flows for fish passage through fishways
  • providing connectivity for fish passage between the lower Broken Creek and the Murray River.

This watering action was managed in cooperation with the Victorian Environmental Water Holder, Goulburn-Murray Water and the Goulburn Broken Catchment Management Authority.