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Central Region
*The long term average (LTA) has been calculated statistically, using the long term data record for this hydrograph. The respective drought zones are used as operational triggers and have been derived using the LTA.
Rainfall in our Central region was just below average in July at 96% of the Long Term Average (LTA). Over the last three months (May to July inclusive), our Central region has received below average rainfall (66% of the LTA) and below average effective precipitation (50% of the LTA). Soil Moisture Deficit (SMD) (soil dryness) remains above average levels for the time of year, meaning any forthcoming rainfall is unlikely to contribute significantly to groundwater recharge. Note that summer effective precipitation levels (the amount of rainfall which reaches groundwater) are usually low.
Groundwater levels continued to decline through July due to below average rainfall and effective precipitation in 2025 to date. Groundwater levels however are likely to remain above average over the next six months if rainfall is greater than 60% of the LTA, due to starting the recession period well above average in March 2025.
Please refer to our Drought Plan for further information about droughts and how we manage them.