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Southeast 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.
*Drought zone 1 is the LTA in Southeast region.
Rainfall in our Southeast region was above average in July at 144% of the Long Term Average (LTA)). However, over the last three months (May to July inclusive), our Southeast region has received slightly below average rainfall (95% of the LTA) and below average effective precipitation (79% of the LTA). Soil dryness (Soil Moisture Deficit) remains above average levels for the time of year, meaning that any forthcoming rainfall is unlikely to contribute to groundwater recharge.
Groundwater levels continued to decline through July due to below average rainfall and effective precipitation through 2025 to date and are now below average levels. Groundwater levels however are likely to track the LTA line over the next six months with close to average rainfall. Drier conditions could result in groundwater levels reaching our Environmental Stress trigger in August.
Please refer to our Drought Plan for what this means for us and our customers.