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The resource availability scenario (RAS) is an important consideration when developing potential environmental water priorities, plans and watering actions over the year ahead. The assessment of the RAS occurs leading up to and throughout the water year. The assessment is based climate conditions over the previous year (rainfall, runoff and soil moisture) and surface water […]
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Many changes to the condition of the Lachlan River have contributed to the degradation of native fish habitat. River regulation has changed the flow conditions upon which many native fish depend. Changed flow patterns and degraded riparian zones increase bank erosion and turbidity and sedimentation within channels, filling pools and smothering habitats, including macrophytes, woody […]

Largest Pelican Breeding Event in Decades
The largest Australian pelican (Pelecanus conspicillatus) breeding event in over 30 years at Lake Brewster has been ongoing since October 2021. Over 15,000 nests were estimated from drone monitoring in January 2022, and thousands of large chicks and juveniles were still on the breeding mounds in May 2022. This is the largest known breeding event […]

Murrumbidgil Swamp, Lake Tarwong and Lake Bullogal in-field condition assessments to be completed late October
Murrumbidgil Swamp is a wetland of national significant and lies on Merrimajeel Creek, which is one of several distributaries from the lower Lachlan River on the Lachlan alluvial fan. Research starting in the mid-late 1970s established how River Red Gums drive the ecology of Murrumbidgil Swamp,and the Office of Environment and Heritage has recenlt commissioned […]

July 2013 Newsletter
Commonwealth Environmental Water Holder (CEWH) and recent former Manager RiverBank at NSW Office of Environment and Heritage (OEH) speak with the LRWG

Regionally Significant Wetlands
In the Lachlan Catchment there are also nine regionally significant wetlands, four in the mid-Lachlan between Forbes and Lake Cargelligo (including Lake Cargelligo itself) and five below Lake Cargelligo. Regionally significant wetlands are recognised in part on the basis of their meeting one of the five criteria below, which was developed for identifying a key […]

What is environmental water & how is it managed?
In simple terms, environmental water is a share of water which is specifically and purposefully managed by humans to benefit the environment by either reserving water or releasing volumes into rivers, creeks and wetlands. The Lachlan Environmental Water Management Group (EWAG) acts in an advisory capacity to manage environmental water in the Lachlan, assisting with the implementation of the Lachlan Environmental Watering Management Portal (LEWMP) and Lachlan Annual Environmental Water Plan.

Lachlan Riverine Environmental Water Management Portal
The LEWMP assists in the delivery of environmental water through setting priorities based on important ecological, cultural and social values. The wetlands selected as priority for delivery of environmental water include those recognised as nationally and regionally important, providing good examples of wetland types associated with lowland rivers. In managing significant wetlands, consideration is given to how environmental water can also benefit key riverine assets, functions and values.
Where we work
Discover the unique and iconic places in the Lachlan Valley
The Lachlan Environmental Water Management Portal
This website describes the Lachlan Environmental Water Management Portal and the role of the Lachlan Environmental Water Advisory Group (EWAG) in the cooperative management, and efficient and effective delivery of environmental water in the Lachlan Valley.
Learn moreOur Achievements
Awards
NSW Green Globe Winner 2012 Finalist in national Banksia Environmental Awards 2012
Learn moreLachlan Riverine Working Group
The LRWG has been formed to coordinate the appropriate distribution of Environmental Flows. The LRWG provides regular updates on environmental watering in the Lachlan through its newsletters.
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