UPDATE: The Northern Territory Government has just confirmed the stability of the Cambrian Limestone Aquifer (CLA) amidst rising concerns sparked by a controversial study from Griffith University. A recent media release dated December 11, 2025, emphasizes that the CLA remains a vital and sustainable water source for the region.
According to Nerida Beard, Acting Executive Director of Water Resources, the claims made by Griffith University’s study are misleading and unfounded. The study suggests that the CLA is significantly drying, raising unnecessary alarm over groundwater extraction. Beard asserts that the analysis selectively uses data from NASA’s GRACE satellite missions, focusing on the period from 2011 to 2022, which included an exceptionally wet phase followed by several dry seasons.
“It is crucial to understand that the study fails to account for the significant rebound in water levels post-2022,” Beard stated. “Groundwater levels naturally fluctuate due to climatic variations, and the CLA has shown resilience in responding to these changes.”
The Griffith University study estimates annual losses of 6-8 cubic kilometers in terrestrial water storage, with nearly 4 cubic kilometers attributed to groundwater. Despite these figures sounding alarming, Beard clarifies that when viewed over the entire aquifer, the loss equates to a mere 1 to 1.5 centimeters per year—an insignificant depth when compared to actual water extraction practices.
The Northern Territory Government draws on nearly 70 years of hydrogeological science to guide its water management policies. Comprehensive data from over 550 monitoring bores and 150 surface water monitoring stations provide local insights into the Territory’s water resources. Beard emphasizes the government’s commitment to a conservative approach to water management, combining multiple lines of scientific evidence.
“This includes local and regional monitoring data, resource assessments, and integrated groundwater models,” Beard explained. “We take pride in our rigorous, science-based monitoring to ensure the sustainable management of our water resources.”
The NT Government’s data indicates that the Cambrian Limestone Aquifer is stable and healthy, with recharge and extraction levels consistently within sustainable limits. Monitoring has shown that water levels in key observation bores have either remained steady or recovered following dry periods, highlighting the aquifer’s resilience.
As concerns about water resources grow, the Northern Territory Government will continue to apply stringent scientific monitoring and planning strategies. “It’s imperative to rely on long-term data rather than selective timeframes to understand our water systems comprehensively,” Beard concluded.
For ongoing updates and further details, visit the Northern Territory Government website at https://nt.gov.au/environment/water. This developing story will continue to unfold as authorities strive to ensure the sustainability of this crucial resource.
