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The mystery of Thirlmere Lakes

The mystery of Thirlmere Lakes

22 May 2020

During the past decade, water levels in the Thirlmere Lakes have varied from full in 2016 to completely dry between October 2018 and February 2020. These variations have raised concerns with the local community and left them wondering; "Where has all the water gone in Thirlmere Lakes?"

Thirlmere Lakes National Park, located south-west of Sydney in an ancient river meander, contains five lakes – Lake Gandangarra, Lake Werri Berri, Lake Couridjah, Lake Baraba, and Lake Nerrigorang. 

Two WRL research teams (EcoEng and Connected Waters) have investigated the water balance budget and surface-groundwater interaction in Thirlmere Lakes. These investigations were supported by coordinated research projects with ANSTOUniversity of Wollongong, and the NSW Department of Planning, Industry and the Environment (DPIE). In collaboration with these groups, WRL engineers undertook extensive fieldwork between 2017 and 2020 to monitor the site, including remote sensing bathymetry surveys, deploying micro-meteorological stations for measuring evapotranspiration, and installing a piezometer network for groundwater investigations.

Read more about the research findings here.  


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Subsidies drive Murray-Darling Basin extractions as environment loses

Subsidies drive Murray-Darling Basin extractions as environment loses

21 May 2020

Subsidised irrigators extracted up to 28 per cent more water than those who received no funds under a national Murray-Darling Basin irrigation efficiency program, a new study has found.

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Groundwater resources in Africa resilient to climate change

Groundwater resources in Africa resilient to climate change

8 August 2019

Groundwater – a vital source of water for drinking and irrigation across sub-Saharan Africa – is resilient to climate variability and change, according to a new study.

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 Low cost way to explore groundwater resources could be game changer

Low cost way to explore groundwater resources could be game changer

10 May 2019

UNSW Sydney water engineers have revealed that investigating and managing groundwater resources more sustainably can be achieved at lower cost by using existing Earth and atmospheric tidal data.

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CWI Director addressed National Ground Water Monitoring issues in ABC News

CWI Director addressed National Ground Water Monitoring issues in ABC News

5 March 2019

The Director of CWI was recently quoted on the ABC story: ‘ Who's watching the water? Experts sound warning on deteriorating groundwater monitoring’

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