Port Arthur Monitoring Program

​​The EPA has conducted water quality monitoring in the Port Arthur area since December 2019. The monitoring aim​​s to increase the understanding of water quality within the Port Arthur area. 

Water Quality M​onitoring Progr​​am 

The purpose of the program is to provide water ​​quality information to 

  • increase the understanding of water quality in the Port Arthur area and in particular Long Bay 
  • collect data on key indicators for comparison against Default Guideline Values (DGVs) for aquatic ecosystems developed for the Port Arthur area 
  • investigate if any departures from background conditions (DGVs) are attributable to anthropogenic of natural sources and if possible show attribution 
  • provide a summer snapshot for the extent of epiphytic growth on seagrass habitat 
  • provide water quality information to assist nutrient dispersion modelling and biogeochemical model development and validation 
  • independently validate the water quality information collected by (or on behalf of) Tassal under the terms of Environmental Licence 9959/2 

December 20​​​​19 

The monitoring undertaken in December 2019 aimed to determine point in time water ​​quality across the Port Arthur area, appraise the condition of sea grass habitat and assess opportunistic algal growth levels. ​​ 

 Port Arthur Water Quality Observations December 2019 (PDF 2Mb)

 Port Arthur Dec 2019 AST Lab Report (PDF 174Kb)

October 2020 to Ma​rch 2021 

The monitoring undertaken from October 2020 to March 2021 aimed to compare data for key water quality indicators / parameters against Default Guideline Values (DGVs) for aquatic ecosystems developed specifically for the Port Arthur Area. Any departures from the DGVs were investigated to determine if attributable to anthropogenic or natural sources and if possible show attribution. 

A snapshot of the extent of epiphytic growth on seagrass habitat was also undertaken with the findings compared to other seagrass habitats across the South East of Tasmania. 

 Port Arthur Monitoring Results October 2020 to March 2021 (PDF 3Mb)

 DGVs for Aquatic Ecosystems - OSRA Segment 79 (PDF 393Kb)