Sydney Harbour

Projects Projects

Goobarragandra Invasive Willow Control Program

This project was initially a black willow monitoring project to follow up on an earlier control project. But the project expanded to treat crack willows on 15 properties where we had landowner consent to improve river health and protect the habitat of the endangered Booroolong Frog and Tumut Grevillea. As there is no funding or local agency support to remove the large woody debris the project focuses on removing the smaller crack willows and any black willow or crack willow hybrid seedlings we find.In 2010 & 2011 the catchment had two large flood events and then in 2012 a 1 in 100 yesr flood event occurred which remove a lot of the riparian vegetaion including the remaining crack willows and widened the river in several places

Read more: Goobarragandra Invasive Willow Control Program

Murrumbidgee River Upper Catchment Willow Control

Willow Warriors are involved in two linked projects on the Upper Murrumbidgee River.

1) A regional willow mapping project run by the Upper Murrumbidgee Catchment Coordinating Committee (UMCCC) for which Willow Warriors are providing willow mapping data along the sections of river we can paddle. To date we have provided willow data by taxa in 200meter transects along the Murrumbidgee river from Cooma pumping station to McLeods Road, Hall. This data will be consolidated with other data sources from the smaller waterways and wetlands, which is to be used to review the results of Willows Management in the upper catchment.

2) A black willow control project run by the Upper Murrumbidgee Landcare Committee specifically targeting Black willlows. Willow Warriors provided the mapping data and are treating the black willows where we have landowner consent.

View Murrumbidgee Willow Mapping Project in a larger map

Wingecarribee Cecil Hoskins Project

The Cecil Hoskins Nature Reserve is located in the Southern Highlands of NSW on the banks of the Wingecarribee River.  It is located in the upper third of the Wingecaribbee River sub catchment.

Almost half the area of the reserve is comprised of a lagoon formed by the backed up waters of the Bong Bong Weir. Consequently the reserve is an important habitat for native bird species and in particular wetland birds.The Nature Reserve is managed by the NSW National Parks and Wildlife Service through the Cecil Hoskins Nature Reserve Plan of Management.



Read more: Wingecarribee Cecil Hoskins Project

Wingecarribee River - Crack Willow Project

Willow Warriors are assisting local stakeholders the Wingecarribee Shire Council, Office of Water, South East Local Land Services, National Parks and Wildlife Service and Crown Lands to control invasive willows, including Crack Willows and Grey Sallow Willows, and Acer Negundo along the Wingecarribee River. The control of these two types of willows have been split into two projects as the issues, control techniques and future monitoring processes are substantially different. We have also been connected with activities down to the Wollondilly Junction and where we have doen work downstream to the stored water and so now connected as one project covering 114 km of river. There are a few crack willows left where we could not get landowner consent and some where we have not yet asked and one 9km section of inaccessable gorge country between MacArthurs Crossing and Long Flat. There is also a large infestation of Acers (Maples) near Berrima which needs to be treated before it becomes a major investment to control

View Wingecarribee Crack Willow Control in a larger map


Here are photos taken on the Wingecarribee Crack Willow Control activities

Read more: Wingecarribee River - Crack Willow Project

Wollondilly River - Lower Invasive Willow Control

The Lower Wollondilly invasive willow control project is mapping and, where we have consent, treating invasive willows including Black Willows, Grey Sallow Willows and Crack Willows) and other Woody weeds like Acers and Tree of Heaven. Between 2009 and 2011 the project focused on the section of the Wollondilly between the Wingecarribee Junction and Goodmans Ford. In January 2015 we helped National Parks with a weed mapping project between Goodmans Ford and Burnt flat so that Contracators could quote and run a project treating Crack Willows on NPWS estate, crown river bed and private land, where the owners gave consent, downstream of Tomat Creek. In October 2016 we did a second trip this time mapping willows and other woody weeds down to the stored water of Lake Burragorang and in April 2017 we dida trip to start the treatment of the Tree of Heaven sites found downstream of Goodmans Ford and also to monitoring the control work downstream of Tomat Creek.

Crack Willows have been included in the project as there were only a small number of crack willows in this section of river and most were small or medium size and so treating them now would prevent future spread and keep the amount of debris low. There are a few properties that did not give consent and so there are about a dozen willows upstream of Goodmans Ford. this also allowed us to consolidate the work done by us and the Wingecarribee Council and Bushcare community to extend from Berima Weir down to the Wollondilly and then down to the stored water of Lake Burragorang

If consent can be obtained this protect will continue the treatment downstream of Goodmans Ford to the stpred water.

View Wollondilly Willow Mapping Project in a larger map

Willows out of Our Rivers

The Willows out of Our Rivers (WOR) project does not have the goal of removing all willows from Australia. The project has two linked overriding objectives. The first is to map willows by taxa and also look for galleries of seedlings, to determine where the varieties of willows that spread by seed are located, and then work with the community to treat the seedlings and the taxa or trees producing the seed. The reason we have selected whitewater rivers is not just because we enjoy whitewater paddling, but it is because these rivers flow through or adjacent to land managed not for agricultural production but for it's conserrvation values. Our second over riding objective is to assist public and private landowners, who manage their land for it's conservation values, to control willows on their land. The link betwen the two arises because managing the spread of willows vegetatively along a river from agricultural land is not all that difficult it just requires a biannual monitoring program at the upstreaam end of a property where willows have been removed. But monitoring the spread of willows by wind blown seed across or between catchments is very difficlut and requires planning and broad scale managment.

There is more detail on the Project and it's proposed outcomes and objectives below.

Read more: Willows out of Our Rivers

Maintaining Our Hawkesbury Restroation

Maintaining Our Hawkesbury River Restoration is a project where Willow Warriors in partnership with the Hawkesbury Youth Landcare Group and the Hawkesbury Rainforest Network visit sites to monitor and maintain the sites that have been restored by landcare and buchcare groups and private landwoners along the Hawkesbury River and its tributaries. The project will start in February 2010.





Read more: Maintaining Our Hawkesbury Restroation

Hawkesbury Source to Sea

The Hawkesbury Landcare Source to Sea paddle was first run in September 2009. The event was funded by the Hawkesbury Nepean Catchment Managements and was run to showcase the work done by landcare and bushcare volunteers, private landowners and public landmangers with funding received from funding bodies like the Hawkesbury Nepean Catchment Management Authority and the NSW Environamntal Trust, Envirofund or the new Caring for Our Country program or Department of Lands or the Sydney Catchment Authority.

A group of paddlers kayaked from the Warragamba river junction on the Nepean to Pittwater over five days stopping of at sites restored by  landowners contractors and landcare amd bushcare volunteers.

To read more

 IM-13909-Nepean River and Nepean Gorge areaIMG_0046-600x450.jpg

Hawkesbury Nepean Black Willow


Conservation Objective:

To protect rivers, creeks & swamps in the Greater Blue Mountains World Heritage Area (GBMWHA) and wetlands in the Hawkesbury floodplains by removing the remaining black willow trees from along the Hawkesbury Nepean River.

Black willows are a Weed of National Significance They spread by windblown seed up to 60km & a single large tree can produce tens of thousands of seed that spread along rivers & creeks & into wetlands, Black Willows form monocultures, shading out Casuarinas, Bottle Brush, Tea Trees, Sandpaper figs, Lilly Pilli, Phragmities reeds and other native, seed bearing, plants that are the food source of many native birds.

What we do:

Willow Warriors organise a kayak paddles along the Nepean River to poison Black Willows using bioactive glyphosate which is approved for use along waterways by volunteers . Volunteers & parks staff have already removed Black Willows from the Colo & Grose River sub-catchments that flow through the Greater Blue Mountains World Heritage Area . Hawkesbury River County Council, Willow Warriors, Wetlandcare Australia and Hawkesbury Nepean Catchment Management Authority are partners in a two year program to remove Black willows from the catchment.


View Black Willows Treated in 2011-13 in a larger map



Read more: Hawkesbury Nepean Black Willow

Snowy River Monitoring

The Snowy River willow  monitoring project is part of the Willows out of Our Rivers project that is mapping willows by taxa across South East NSW to update the data available of willow distribution. At the same time where resources are available Black Willows and Grey Sallow Willows are being treated where we have landowner consent. If we find evidence that other willows are seeding we will also be helping landowners with managing these willows where resource are available.


Over the last few years an intensive riparian restoration project inclduing willows control has been taking pllace along the snowy in preparation for the increased flows to be released from the Jindabyne dam. As such this catchment is a low priority for Willows Warriors although we do see a roll for recreation paddlers in monitoring the river in the future.

View Snowy River NSW in a larger map

Greater Sydney Bushcare Kayaking


Conservation Objective:

Remove environmental weeds from Goat Island in Sydney Harbour, which is managed by the National Parks and Wildlife Service. Then maintain the site to remove new seedlings to prevent weeds maturing and producing seed locally.

Remove weeds, soil and other material from rock surfaces and cultural assets and assist parks staff with removing weeds from gardens and other areas as directed.


Read more: Greater Sydney Bushcare Kayaking

Middle Harbour - Garigal National Park


Conservation Objective:

Bush regeneration volunteers for Garigal National Park have been working in Middle Harbour since 1992. Removing environmental weeds and rubbish along the creek lines to provide much needed riparian habitat. It is a large area with many sites requiring assistance. There is a great variety of weeds ranging from Lantana, Ground Asparagus to woody weeds. Some areas have heavy weed infestations and in others it is a matter of getting in there before it takes over. In Garigal NP there are Endangered Ecological Communities (EEC’s) and populations of rare and threatened plant species. Giving the native plants a chance to reclaim space around the river banks and creeks that are heavily impacted by urban life means we won’t lose it all to weeds and we can enjoy the beauty of the Sydney water ways.


Read more: Middle Harbour - Garigal National Park

Shoalhaven Gorge Weed control Program

This project was started by a group of bushwalkers from Springwood Bushwalking Club in partnership with Willow Warriors with some joint members. initially the trips were to map and treat weeds like crack willows and tree of heaven but the group also found black willows on the second trip.


View Shoalhaven River in a larger map

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