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Lachlan Swamp Boardwalk Restoration

Greater Sydney Parklands is committed to maintaining and enhancing natural areas in Centennial Parklands.

Project: Lachlan Swamp Boardwalk Restoration
Location: Lachlan Swamp, Centennial Parklands (off Dickens Drive)
Project Delivery: 9 May to late-June
Project Owner: Greater Sydney Parklands, utilising the Centennial Park and Moore Park Trust (CPMPT) Strategic Asset Maintenance Program (SAMP) Stimulus Funding. 

Lachlan Swamp history and importance

Lachlan Swamp served as Sydney’s main water supply from 1837 to 1859. Grazing and garbage dumping gradually polluted Lachlan Swamp and ended it as a drinking water source. In 1874, a series of dams were built in the wake of large-scale flooding, however, this only led to increased pollution. Local residents lobbied the then Woollahra and Paddington Councils to turn this Water Reserve into a public park which led to the creation of Centennial Parklands, through legislation in 1887 and its opening on 26 January 1888.
Lachlan Swamp remains one of Sydney’s most important wetlands, providing habitat for the smallest insects to the flying foxes that call the highest tree branches their home. It is also used extensively in educational programs, so visitors and students can explore ecosystem dynamics in an urban wetland and learn more about flying fox colonies.  
Lachlan Swamp is home to one of Sydney’s largest grey-headed flying fox colonies. Regular tree assessment and environmental monitoring is carried out in this area to ensure the ongoing health and sustainability of the ecosystem as bat numbers fluctuate with the seasons.
The main tree species in the wetland is the Broad-Leaved Paperbark. These were planted about 30 years ago and grow in ideal conditions.
For a bird’s eye view, check out our video of the Lachlan Swamp in Centennial Park.

Project Purpose

The purpose of the project is to improve:

  • Visitor experience,

  • Wetland management through new plantings,

  • Understanding of natural, cultural and heritage values of the Swamp, and

  • Expand educational opportunities.

Project description

The Lachlan Swamp Nature Trail opened in 1999 for community education and engagement purposes. The current timber walk has now reached the end of its life and needs to be replaced to ensure continued and safe access for visitors to the Swamp.  
$360,000 has been allocated to establish a new nature trail, in line with the educational and environmental objectives of the Centennial Parklands Master Plan.
Works will be delivered in several stages:

  • Construction of a new gravel path before the start of the boardwalk.
  • Demolition and removal of existing timber boardwalk and construction of a new composite walkway.
  • Restoration of the key entry points with native plantings.
  • Installation of new Indigenous interpretative signage, and
  • Improvement and ongoing maintenance of the Nature Trail through our Volunteer Program.


Map of the Lachlan Swamp Boardwalk Restoration

Current boardwalk

Current state of the Lachlan Swamp Boardwalk

Impacts of works

Greater Sydney Parklands will work closely with contractors undertaking the works to mitigate impacts on visitors and the environment.
The area will be completely fenced off while works are underway. Visitors in this area of the Parklands may experience noise from machinery.

Constructions hours

Construction operational hours will be restricted to 7:00am to 5.30pm Monday – Friday with no work on weekends or public holidays.

Any work outside these hours will require approval and will be notified via signage on site, parkland notices and this project page. 

Project updates - June 2022

The old timber boardwalk removal work is now complete.

Frequently Asked Questions
The swamp will be completely closed during the works to ensure a safe working environment and allow the qualified ecologist to better monitor the work.
The new Boardwalk will be made from Fibreglass Reinforced Plastic (FRP) and hot-dipped galvanised steel structures. These materials are better suited for the swamp environment and for its location beneath the flying fox colony as can better cope with bat droppings. The position and length will also be changed to ensure better protection, management and monitoring of the flying fox colony.
Measures will be taken to help mitigate the risks to bats, including timing of works for when bats are least likely to be disturbed (i.e. avoiding critical life cycle stages such as pregnant females or young that cannot fly) and appointing a suitably experienced ecologist to monitor the flying-foxes.
Yes, the new Boardwalk have has been designed so that visitors can still view the flying fox colony yet not impact on their habitat.
Grey-headed Flying-foxes are a threatened species. It is important that we protect their habitat and minimise disturbance. The re-alignment of the boardwalk will help us to better manage bat welfare and address new threats that are emerging, e.g. extreme heat events.
Works will take approximately 10 weeks, with the new boardwalk to be open by the end of June (weather permitting).