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East 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 East region was below average in February at 75% of the Long Term Average (LTA). Over the last three months (December to February inclusive), our East region has received below average rainfall (83% of the LTA) and below average effective precipitation (72% of the LTA). Soils wetness (SMD) however remains well below average, meaning any forthcoming rainfall is likely to contribute more than average to groundwater recharge than average.
Groundwater levels started to increase through September and remain just above average due to the above average rainfall over the last recharge period. Levels have now started to decline due to below average rainfall in February and the last three months. Groundwater levels are likely to remain above average over the next six months if rainfall is equal or higher than 100% of the LTA.
Please refer to our Drought Plan for what this means for us and our customers.