The report Groundwater as an Adaptation Option to Current Water Resources Management, by Gonzalez et al., analyses groundwater level trends and the sustainability of alluvial aquifers in the Murray–Darling Basin (MDB). Although groundwater usage within the MDB is limited, its use does rise during periods of reduced surface water availability and 75% of all groundwater usage is concentrated in eight major alluvial aquifers. Thus, a greater understanding is important for resource management. 

Utilising machine learning, the study links groundwater trends to factors like rainfall and extraction bores, highlighting flooding as a key driver of recharge. This finding supports the potential for managed aquifer recharge (MAR) and integrated water management strategies to enhance climate resilience and water security.  

Additionally, the report offers a conceptualisation using the Lower Namoi River, which proposes the use of surplus surface water to recharge groundwater, creating a secure and tradable water entitlement system that could benefit local use, facilitate water trading, and boost economic outcomes. 

Find the full report here.