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Penrhyn Estuary Rehabilitation

Port Authority of New South Wales has spent about $8 million to rehabilitate and expand Penrhyn Estuary to provide habitat for migratory birds protected by State and Federal legislation. 

Habitat Enhancement Plan detailing the works and long term management and monitoring was prepared and approved by the Department of Planning and Commonwealth Department of Environment, Heritage and the Arts.

Key features of the works included:

  • weed and mangrove removal
  • creation of 2.4 hectares of planted saltmarsh habitat to achieve a total area of 3.5 hectares
  • expansion, from eight to 14 hectares, of intertidal sand/mud flats for shorebird feeding
  • creation of 6.5 hectares of seagrass habitat
  • construction of a public lookout and bird hide
  • long term maintenance.

Port Authority of New South Wales has been monitoring the success of the enhancement works since 2012 through a long term five year program. 

Cardno consultants have been engaged to measure and report on water quality within the estuary, migratory shorebird numbers, seagrass colonisation, benthic invertebrate concentrations in the estuary substrate and the area and quality of the saltmarsh habitat. An offset package is required to be implemented should works not  be successful.

Summary reports on the progress of the monitoring program are available on the monitoring and reporting page.