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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 June at 104% of the Long Term Average (LTA)). However, over the last three months (April to June inclusive), our Southeast region has received below average rainfall (65% of the LTA) and below average effective precipitation (34% of the LTA). Soil dryness (SMD) 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 June due to below average rainfall and effective precipitation the last three months and are now below average levels. Groundwater levels however are likely to track the LTA line over the next six months if rainfall is equal or greater than 100% of the LTA. A drier summer could result in levels hitting Environmental Stress in late summer.
Please refer to our Drought Plan for what this means for us and our customers.