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Groundwater levels

SouthEast Region


SouthEast region water levels hydrograph

*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 above average in June, at 214% of the LTA. This is the second consecutive month with above average rainfall, however groundwater levels have continued to decrease, in line with the fact that we are currently in the seasonal recession period. Despite this, levels are still above average for the time of year. Groundwater levels are likely to continue declining until this autumn. Predictions indicate that if we receive at least 80% rainfall over the coming months, levels are likely to remain above the LTA curve through the summer this year. Drier conditions, such as a 60 % rainfall scenario, could see levels dip below the LTA curve into drought zone 1 in late summer, before tracking the LTA curve through the early parts of the seasonal recharge period.

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