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 below average in November at 73% of the Long Term Average (LTA)). Over the last three months (September to November inclusive), our Southeast region has received almost average rainfall (97% of the LTA) and below average effective precipitation (60% of the LTA). Soil wetness (SMD) is currently below average levels for the time of year, meaning that any forthcoming rainfall is likely to contribute less to groundwater recharge.
Groundwater levels started to increase through November at a slower rate than the LTA but remain above average due to the above average rainfall last recharge period. Groundwater levels are likely to remain above average over the next six months if rainfall is equal or higher than 100% of the LTA. Groundwater levels are currently higher than the above average conditions experienced in 2001 and 2021 but lower that 2014 at the end of November.
Please refer to our Drought Plan for what this means for us and our customers.