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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 well below average in March at 14% of the Long Term Average (LTA)). Over the last three months (January to March inclusive), our Southeast region has received below average rainfall (83% of the LTA) and below average effective precipitation (90% of the LTA). Soil wetness (SMD) is now well above average levels for the time of year, meaning that any forthcoming rainfall is unlikely to contribute to groundwater recharge.
Groundwater levels started to decrease the last week of March due to below rainfall and effective precipitation in February and March. Groundwater levels however are likely to remain above average over the next six months if rainfall is equal or greater than 80% of the LTA. A drier summer could result in levels hitting Environmental Stress in early autumn.
Please refer to our Drought Plan for what this means for us and our customers.