AWMA are contributing to a growing number of environmental projects, including new regulators to provide multiple control options for environmental flow management and water savings along the Murray.
Consistent with the Murray-Darling Basin Ministerial Council’s Living Murray Initiative, this project aims to recover cost-effective permanent water to achieve the environmental objectives at a number of nationally recognised, significant ecological assets. This project focused on wetlands within the floodplain of the Murray River that are directly connected to the river and will result in the construction of permanent regulators on the connecting channels that link wetlands to the main river channel, and managing the flows to reduce transmission evaporative losses within the Murray River.
This project concentrates on two selected wetlands at Quat Quatta Lagoon and Snake Island Lagoon where new regulators have been installed. A third site at Croppers Lagoon was an existing structure that received an upgrade involving the removal of drop boards and installation of new gates and walkways.
The wetlands are all situated on the northern side of the Murray River within NSW, between Howlong and Corowa.
Although the primary aim is water savings, the installation of regulators at the wetlands also offers an opportunity for the return to a more natural wetting and drying regime, an important step in creating conditions conducive to wetland ecological rehabilitation.
In partnership with Terry Plant Hire Pty Ltd, J.C. Butko Engineering and the Department of Environment, Climate Change and Water, AWMA custom designed, manufactured and installed all nine water control gates for these sites. Seven of the gates were undershot penstocks, the remaining two, Head and Discharge Gates. All gates will be manually operated with Rotork gear boxes and a portable actuator.