Blue Mountains City Council

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Swamps and Swampcare     Current Works     Blue Mountains Water Skink     Streamcare and Water Quality     Macroinvertebrate Surveys     Recreational Water Quality     Glenbrook Lagoon Restoration     Biodiversity     Contact Us     Upcoming Events     Living Streams

Glenbrook Lagoon Restoration Project

Glenbrook lagoon is a 7 hectare wetland that is one of only 3 of its kind in the entire Hawkesbury-Nepean catchment.

The lagoon provides habitat for flora and fauna that is otherwise unusual in the area.

Over many decades urbanisation has severely degraded water quality and ecosystem functioning at the lagoon – the most visible consequence being infestation by noxious aquatic weeds Salvinia molesta and Cabomba caroliniana.

In 2006 and 2007 Council secured a total of $95,000 from the Local Government Advisory Group of the Hawkesbury-Nepean Catchment Management Authority to undertake project works at Glenbrook Lagoon. The overall aim is to restore the ecological values of Glenbrook Lagoon, with immediate objectives to remove noxious aquatic weeds and reduce nutrient levels.

Project works include:

  • Mechanical harvesting of 200 tonne of Salvinia in 2006
  • 685 hours of hand picking and spot spraying of Salvinia remnants in 2007
  • Regular dosing with denitrifying bacteria to help reduce nutrient levels in the water column
  • Restoration of the 'beach' area
  • Installation of interpretative signage about the natural and cultural values of the lagoon
  • Improvements to stormwater basins at inlets to the lagoon
  • Terrestrial bush regeneration
  • Establishment of a Bushcare group at the site
  • Community information days

For more information about Glenbrook Lagoon, download one of the documents at right.