Oct 2019 - TUCKEAN SWAMP Project Update
Project update provided to land owners and stakeholders. Latest on Water Quality - Water quality leaving the system over 2018 was largely dependent on the timing, frequency and magnitude of rainfall events. Acid discharge increases when low-lying areas dry out and gradients between groundwater and drains are greatest. During June and July pH of water leaving the system dropped down to below 4. Mid-year samples by the UNSW Water Research Lab team recorded a field pH of 2.08, one of the lowest readings they have ever recorded in NSW. Once groundwater levels recede below drain level, tidal flushing improves water quality again in the lower reaches of the Swamp.