What’s happening at Manly Dam
UPCOMING EVENTS
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The Save Manly Dam Catchment Committee in conjunction with Manly Lagoon Friends is organising a walk from Mermaid Pools - following Manly Creek to Manly Lagoon on Sunday August 16th.
This will take us via David Thomas and Millers Reserves through Warringah Golf Course and then to Passmore and Nolans Reserves and on to Manly Lagoon. We will look at some neglected stretches as well as viewing some of the inspiring rehabilitation work (while receiving wise words from local experts on the way). We’ll also take bags to collect rubbish as we go. It will be a great way to build connections with other community groups.
It promises to be an intriguing and informative look at this important waterway (including several hidden sections) with the promise of a coffee at the end. Numbers are being capped at 20. If you’re interested please email here. Bushcare and other environmental volunteers will have priority. -
The next Bushcare Session is on Saturday, 29th August, 2026. If you are a first time volunteer you will need to register with the Northern Beaches Council here, this is required for ensuring you are covered by the council insurance.
We will continue to remove invasive weeds and rubbish and focus on maintaining the native species which were planted. One of the environmental weeds that we target is "Mother of Millions". (Note- we hand remove this weed and don't use toxic chemicals).
During our break we will have the lovely Mel Zeppel organise a speaker. Watch this space for details on that.
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University of Sydney researchers are inviting northern Sydney residents to take part in a short survey exploring views on Urban Rewilding. Residents of Balgowlah, North Balgowlah, Manly Vale, and Allambie Heights may also be invited to an optional follow-up interview about their experiences living near Manly Dam Reserve. Complete the survey here: (~20 minutes), complete by 26th August.
For more on the project, visit the Sydney Rewilding Initiative website
Backyard Biodiversity with Juan
Backyard Biodiversity is an invitation to join the good folks at Manly Dam and learn more about the biodiversity that call it home.
A prehistoric fish in Manly Dam
The search for the pre-hstoric fish, the Climbing Galaxias continues in a Citizen Science effort to ensure it still inhabits the Manly Dam after many sediment pollutions events of last year.
Backyard Biodiversity
Backyard Biodiversity: Explore Manly Dam with us; Learn about the species that call it home and help Protect them
2025: What we achieved together
Thank you for a wonderful and action packed 2025. This post covers the highlights of 2025 and outlines all the key achievements from gaining momentum in iNaturalist to winning several awards and of course an update on the Mermaid Pool bush care site.
Grant Win for Manly Dam!
Great News! We are a recipient of the Northern Beaches Council Environment Grant.
Who’s splashing in Mermaid Pools?
Understanding the aquatic life of Mermaid Pools, Manly Dam using Baited Remote Underwater Videos and water quality testing.
PAST EVENTS
27 Jul, 2026: Marco Bordieri speak about his app - VIZ - http://app.viz.net.au/ Do give it a try!
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Backyard Biodiversity' walks are an invitation to explore and learn about the biodiversity of the Manly Dam Catchment with Wildife Expert, Juan Forero. In this Day walk edition Juan, accompanied 12 participants to see about 26 different species of birds. Mr. GrandWildlife Photography did a fantastic job of capturing some of the most interesting moments in this post here. They have done a great job of capturing the beauty of Manly Dam!
Bushcare continued as per usual around Mermaid pool and here are som fun pics from that session.
We also had Marco Bordieri, Principal Solutions Engineer and Marine advocate and community manager. He is the creator of VIZ (https://app.viz.net.au/) A fantastic app which tells you the most favourable conditions of cabbage tree bay and the best time to go check out some cool marine creatures there.
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'Backyard Biodiversity' Sensory walk edition with Wildife Expert, Juan Forero accompanied the Northern Beaches Vision Impaired local community group and guided their experience of the flora and fauna at Manly Dam.
This series was the last part of an Environment Grant by the Northern Beaches Council.
This sensory walk focused on listening rather than seeing. This walk was designed for people who are visually impaired or have low vision, with the idea of helping them connect with and learn about nature through sound. Together we listened to birds, learned to distinguish different species by their calls, and explored the meaning and purpose behind those sounds.It was heartening to hear participants tell Juan how much they enjoyed the experience, making it all worthwhile.
Bushcare at Mermaid Pools happened on the 27th Jun, one of the weed targeted this session was “Mother of Millions”. At the break, the speaker was Melissa Cristina Márquez, a marine biologist, award-winning author and science communicator.
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May 23rd: Twenty family groups came to Mermaid Pools, and planted native species. This was to celebrate the 40th birthdays of Allambie Heights residents Will and Selene. Mermaid Pools Bushcare volunteers were amazing as they guided the various families during the planting process.
Afterwards we were treated to a fascinating talk by Manly resident and Polar biologist Rebecca Duncan. Who knew that plankton could be so crucial to our environment ?May 9th: 'Backyard Biodiversity' is an invitation to explore and learn about the night time biodiversity of the Manly Dam Catchment with Wildife Expert, Juan Forero. In this After Dark edition we spotted various Manly Dam residents - Ring-tailed possums, Brush-tailed possum, Swamp Wallabies, numerous Grey headed flying foxes, Sleepy Kookaburras, Sulphur Crested Cockatoos, Brush Turkey, Orb Weaver Spider, Leaf Curling Spider, Huntsman and more. Juan talked about the habitat and it’s little creatures to offer a better understanding of Manly Dam’s biodiversity.
This series is part of an Environment Grant by the Northern Beaches Council.
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'Backyard Biodiversity' is an invitation to explore and learn about the night time biodiversity of the Manly Dam Catchment with Wildife Expert, Juan Forero in this After Dark edition on 11th Apr. Various Manly Dam residents were spotted on the walk - Moths, Spiders, water dragons and geckos, Possums, Fishes, Frogs and more. Juan talked about the habitat and it’s little creatures to offer a better understanding of Manly Dam bush and understand their habitat.
This series is part of an Environment Grant by the Northern Beaches Council.
Our usual Bushcare session happened on Apr 18th with a very interesting talk by Dr. Melanie Zeppel. on Conservation Biology aspects of Manly Dam, Mermaid Pool, Tree Physiological carbon and water relations.
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Frog guru Jodi Rowley led a small group of volunteers on a Manly Dam frog expedition on the evening of Thursday March 19th.
The March bush care session was held on the 28th. We continued to remove invasive weeds from around the Mermaid Pools site in line with the work we started in January.
If you’re planning to join and it is your first time - please register with Northern Beaches Council on this link.
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We had our second bushcare session of 2026 on the 28th of Feb and continued to remove invasive weeds from around the Mermaid Pools site in line with the work we started in January.
We also had Lisa Hodgson sharing fun shark facts. Lisa has a BSc in Marine Biology, is a PADI Divemaster and works at the Australian Museum and has a real passion for conservation. We love her enthusiasm.
This is the first in a series of 2026 break time talks at Mermaid Pools being organised by another of our volunteers, Mel Zeppel who herself is a recognised "superstar of STEM".
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We had our very first session of 2026 on Jan 31st. We continued our work from last year to remove invasive weeds from around the Mermaid Pools site.
If you’re planning to join and it is your first time - please register with Northern Beaches Council on this link.
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This is the Northern Beaches Council annual Christmas Party for Bushcare volunteers. Please refer to the email from the council for details. If you are a volunteer and don’t have the email invite please let us know on this email (Manlydamwebsite@gmail.com).
The council also holds the annual Photo Competition with 3 specific categories:
Flora and Fungi
Fauna
People and Places
Please lodge photos taken from the Northern Beaches area and keep it to a maximum of 2 photos per category.
Winners will be picked by popular vote from volunteers at the party, with winners announced on the night. Looking forward to celebrate hard work and dedication of Bushcare volunteers.
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We will have a shorter than usual Bushcare session as we we continue to remove invasive weeds from around the Mermaid Pools site.
This will be followed by a ‘pot-luck’ style Christmas Gathering.
If you’re planning to join and it is your first time - please register with Northern Beaches Council on this link.
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Talking nature: from Bush to Beach an event by Northern Beaches Envirolink
Date: 5th Nov, 2025 | Time: 5:30pm | Venue: Tramshed - Lakeview Hall, 1395A Pittwater Rd, Narrabeen NSW 2101 (Location on Map)
We welcome you to an event focusing on local environmental challenges as well as an update on the Lizard Rock Rezoning, a part of which borders Manly Dam.
5.30pm: Light Supper & non alcoholic drinks, mix, mingle and connect
5:50pm: Welcome to Country by Neil Evans
6:00pm: Sonja Elwood, Senior Invasive Species Officer at NBCspeaking on “Priority Weed Management to protect Biodiversity on Sydney's Northern Beaches”
6:45pm: Phil Colman, Marine Biologist with expertise in intertidal zones will speak on ‘The east coast current’. A limited number of Phil's recently published book -Exploring tidal waters on Australia's temperate coast, will be available
7:10pm: Councillor Kristyn Glanville, solicitor practising in environment and planning law will be providing an update on the ‘Lizard Rock’ rezoning and development
7:20pm - 8:00pm - Community Brainstorming with more food and drinks.
If you’re keen to attend please RSVP.
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Plenty happening this October!
At this bushcare session we will continue to remove invasive weeds from around the Mermaid Pools site. We will tackle some Mother of millions (Bryophyllum species) at the top of the waterfall and Yellow Iris (Iris pseudacorus) at the base of the pool.
It also coincides with the UNSW Open Day and we will be running the Sausage Sizzle there.
Members from the Coexist Sydneygroup will be joining for bushcare and a walk as well.
If you’re planning to join and it is your first time - please register with Northern Beaches Council on this link.
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We’re hosting a social gathering for all our volunteers, past, present and intending. The plan is to meet at 12 noon for drinks, lunch and gelato after. Then who knows … possibly another cocktail?
Please RSVP here if you’re planning to attend or would like to join our fabulous volunteering crew.