What is the acidification water level trigger?
This is the level at which acidity being formed in the lake sediments can no longer be neutralized by the alkalinity of the sediments and lake waters. Any water levels below these will expose large areas of acid sulphate soils and any subsequent refilling (including future freshwater inflows or the introduction of seawater) will likely result in the acidification of the water body. The current modelled critical acidification threshold water levels are minus 1.5m AHD for Lake Alexandrina and minus 1.0m AHD for Lake Albert.
