Photographer and environmentalist Silke Stuckenbrock took out this year's Manly Environment Centre Eco Award for her internet-based ‘clean up’ movement - the Two Hands Project.

An Earth Day Celebration

Saturday 24th April

‘A Day at the Bay’ - Earth Day Celebrations focus on Manly’s Cabbage Tree Bay Aquatic Reserve

The North Head Sanctuary Foundation was formed in 2002 with the vision of a Sanctuary to celebrate the natural and cultural heritage of our ancient land.

Last modified on Wednesday, 19 June 2013 09:42

The North Head Sewage Treatment Plant is surrounded by National Park and the largest area of bushland in Sydney Harbour, a large area of Threatened Eastern Suburbs Banksia Scrub borders the plant and a Threatened Population of Long-nosed Bandicoots is found in the grounds.

Last modified on Wednesday, 19 June 2013 09:42

The indigenous vegetation communities originally associated with Manly lagoon and its tributaries have been heavily altered by urban development. There has been widespread introduction of ornamental exotic species such as Coral Trees which seasonally contribute very substantial amounts of leaf matter into the tributaries and the lagoon to the detriment of water quality. Weed infestations are common throughout the area, particularly where maintenance is less intensive, detracting from the water quality, habitat value and recreational amenity of the waterways.

Last modified on Wednesday, 19 June 2013 09:39

There is little habitat for aquatic life because:

  • The natural vegetation of the lagoon has been greatly modified by urban development and the spread of introduced plant species.
  • There are no saltmarshes or mangroves and only very small amounts of seagrass which fringe the shoreline in the lower reaches of the lagoon.
Last modified on Wednesday, 19 June 2013 09:39


  • on Manly Creek to water Warringah Golf Course
  • on Burnt Bridge Creek to water Balgowlah Golf Course

Bore: to water Manly Golf Course

Manly Dam: to water Wakehurst Golf Course

Last modified on Wednesday, 19 June 2013 09:40

Reversing the Dead-End Trend ....
The Manly Lagoon Estuary Management Study (1995) states that:

  • The water of the Lagoon is EUTROPHIC and sensitive to further increases in nutrient inputs.
  • Manly Lagoon sediment is CONTAMINATED with HEAVY METALS and, compared with Sydney Harbour and Curl Curl Lagoon, has the highest average levels of copper and lead. The concentrations of heavy metals in the muddy surface sediments of the lagoon appear to have increased significantly over the period l985 to l993. On the available data, concentrations of lead, mercury and zinc exceed overseas sediment standards (Washington, USA) over much of the lagoon.
  • There are 29 Sydney Water sewer overflows in the catchment.
Last modified on Wednesday, 19 June 2013 09:40

Development within the Manly area became rapid following completion of the Sydney Harbour Bridge in l932. All suitable residential areas were quickly taken up and market gardens sprang up along the creeks, which fed into the lagoon in North Manly and Brookvale.

Last modified on Wednesday, 19 June 2013 09:40

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