Green Square Stormwater Drain Project


Sydney Water and the City of Sydney are pleased to advise that work to build a 2 kilometre underground stormwater drain from Epsom Road, Zetland to the existing stormwater system at Alexandra Canal is progressing well.

Green Square is one of the fastest growing areas in Sydney and includes the suburbs of Beaconsfield and Zetland, and parts of Rosebery, Alexandria and Waterloo. The area sits on a floodplain known as the Waterloo Swamp. The new drain is essential to reduce hazardous flooding in and around the new Green Square Town Centre and enable further development. Construction of the drain is due to be finished by mid 2018.

A better Green Square
The Green Square stormwater drain is the first major infrastructure project in Green Square. It is a key element of Sydney Water and the City of Sydney’s commitment to sustainable urban renewal and liveable cities.

We have formed an Alliance with UGL Engineering, Seymour Whyte Constructions, Parsons Brinckerhoff Australia and RPS Manidis Roberts to deliver this project.

A better stormwater system
The new stormwater drain will
  • significantly reduce flooding in the Green Square area, particularly at Joynton Avenue and on Botany Road, Zetland; and
  • allow the development of the Green Square Town Centre – a major new residential, retail and cultural hub.
Where will it go?
We considered several routes for the underground drain when preparing the Review of Environmental Factors (REF). The route, from Link Road to Alexandra Canal, was chosen to minimise impact on residents, businesses and the environment. Most of this route runs through or under property owned by the City of Sydney and along Sydney Water’s Alexandra Canal easement.



Sydney Water and the City of Sydney are pleased to advise that work to build a 2 kilometre underground stormwater drain from Epsom Road, Zetland to the existing stormwater system at Alexandra Canal is progressing well.

Green Square is one of the fastest growing areas in Sydney and includes the suburbs of Beaconsfield and Zetland, and parts of Rosebery, Alexandria and Waterloo. The area sits on a floodplain known as the Waterloo Swamp. The new drain is essential to reduce hazardous flooding in and around the new Green Square Town Centre and enable further development. Construction of the drain is due to be finished by mid 2018.

A better Green Square
The Green Square stormwater drain is the first major infrastructure project in Green Square. It is a key element of Sydney Water and the City of Sydney’s commitment to sustainable urban renewal and liveable cities.

We have formed an Alliance with UGL Engineering, Seymour Whyte Constructions, Parsons Brinckerhoff Australia and RPS Manidis Roberts to deliver this project.

A better stormwater system
The new stormwater drain will
  • significantly reduce flooding in the Green Square area, particularly at Joynton Avenue and on Botany Road, Zetland; and
  • allow the development of the Green Square Town Centre – a major new residential, retail and cultural hub.
Where will it go?
We considered several routes for the underground drain when preparing the Review of Environmental Factors (REF). The route, from Link Road to Alexandra Canal, was chosen to minimise impact on residents, businesses and the environment. Most of this route runs through or under property owned by the City of Sydney and along Sydney Water’s Alexandra Canal easement.


  • Work completed at 15 O'Riordan Street

    about 1 month ago

    The DG Alliance has finished installing 3 lines of stormwater pipes. We have completed the work at 15 O'Riordan Street and have now handed this site back to Ausgrid. To contact Ausgrid about this property, please call 13 13 65.

    Thank you for your understanding while we completed these important works.

    The DG Alliance has finished installing 3 lines of stormwater pipes. We have completed the work at 15 O'Riordan Street and have now handed this site back to Ausgrid. To contact Ausgrid about this property, please call 13 13 65.

    Thank you for your understanding while we completed these important works.

  • Community Update - March 2017

    4 months ago

    The latest Green Square Stormwater Drain community update gives you information on traffic arrangements at Huntley Street Bridge.

    The latest Green Square Stormwater Drain community update gives you information on traffic arrangements at Huntley Street Bridge.

  • Huntley Street bridge gas work - update

    6 months ago

    As part of our work to build the new stormwater drain between Maddox Street and Alexandra Canal, we need to relocate the gas service beneath Huntley Street bridge. For more information, you can check the updated notification in our document library.


    As part of our work to build the new stormwater drain between Maddox Street and Alexandra Canal, we need to relocate the gas service beneath Huntley Street bridge. For more information, you can check the updated notification in our document library.


  • Maddox Street to Alexandra Canal shared path

    5 months ago
    15008 v 001 alexandra canal web use
    As part of the Green Square stormwater drain project, we’re building a 350 metre long shared path. The path will be open to the public for use by both pedestrians and bike riders.

    The path will be located along the eastern side of the Sheas Creek stormwater channel, between Maddox Street and the start of Alexandra Canal, to the south of Huntley Street.The Maddox Street to Alexandra Canal shared path is part of a long-term commitment by both state and local governments to create the Alexandra Canal Path, which will eventually run along the entire length of the canal.

    Future... Continue reading

    As part of the Green Square stormwater drain project, we’re building a 350 metre long shared path. The path will be open to the public for use by both pedestrians and bike riders.

    The path will be located along the eastern side of the Sheas Creek stormwater channel, between Maddox Street and the start of Alexandra Canal, to the south of Huntley Street.The Maddox Street to Alexandra Canal shared path is part of a long-term commitment by both state and local governments to create the Alexandra Canal Path, which will eventually run along the entire length of the canal.

    Future stages of the Alexandra Canal Path will link to the Cooks River cycleway and cycleway network further south. This includes connecting with the new cycleway and pedestrian bridge proposed by WestConnex over the Alexandra Canal at Campbell Road, Alexandria.

    Planning for this section of the path began in late February 2015.

    We’ll release a newsletter with the shared path design soon. In the meantime, the Review of Environmental Factors addendum provides information and is the planning and approval document for this part of the project.

    The shared path is being built by the DG Alliance, the team delivering the Green Square Stormwater Drain Project for Sydney Water and the City of Sydney.

    If you have any questions about the work, please feel free to call us on 1300 883 648 or email us at stormwater@dgalliance.com.au


  • Community Update - December 2016

    6 months ago

    Keep up to date with the latest news on the Green Square Stormwater project. Check out what is happening in the Zetland area, including Link Road, Portman Street and Joynton Avenue.

    We have a separate update for the Alexandria area, including Huntley Street, Shea's Creek shared path, and Maddox Street.

    If you have any questions about the Green Square Stormwater Drain project, please contact the Community Relations Team on 1300 883 648 or stormwater@dgalliance.com.au

    Keep up to date with the latest news on the Green Square Stormwater project. Check out what is happening in the Zetland area, including Link Road, Portman Street and Joynton Avenue.

    We have a separate update for the Alexandria area, including Huntley Street, Shea's Creek shared path, and Maddox Street.

    If you have any questions about the Green Square Stormwater Drain project, please contact the Community Relations Team on 1300 883 648 or stormwater@dgalliance.com.au

  • Community Update - July 2016

    about 1 year ago

    Keep up to date with the latest news on the Green Square Stormwater Drain project - including information on works at at Perry Park and traffic changes to Huntley Street.

    Keep up to date with the latest news on the Green Square Stormwater Drain project - including information on works at at Perry Park and traffic changes to Huntley Street.

  • Tree removal in Perry Park – July 2016

    about 1 year ago

    Work to build the section of the stormwater drain passing under Perry Park is ongoing, but progress has been slower than expected because one of our microtunneling machines is stuck in the ground on the Bourke Road side of the park.

    We’ll soon start work to dig the machine out. Unfortunately, we’ll need to remove eleven trees in the park to do this, including Two Hill’s Weeping Figs.

    More information about where the work will be happening, what it will involve and the trees impacted can be found in the community notification letter.

    Work to build the section of the stormwater drain passing under Perry Park is ongoing, but progress has been slower than expected because one of our microtunneling machines is stuck in the ground on the Bourke Road side of the park.

    We’ll soon start work to dig the machine out. Unfortunately, we’ll need to remove eleven trees in the park to do this, including Two Hill’s Weeping Figs.

    More information about where the work will be happening, what it will involve and the trees impacted can be found in the community notification letter.
  • Stormwater drain project off to a strong start for 2016

    over 1 year ago

    The Green Square Stormwater Drain project continues to progress well with work continuing over our sites. Keep up with what's happening on and around O'Riordan Street, including 24 hour microtunnelling and the proposed road closures at the Alexandra Canal on Huntley Street and stay tuned to SydneyYourSay throughout 2016 for more updates.

    All notifications are listed in our document library.

    The Green Square Stormwater Drain project continues to progress well with work continuing over our sites. Keep up with what's happening on and around O'Riordan Street, including 24 hour microtunnelling and the proposed road closures at the Alexandra Canal on Huntley Street and stay tuned to SydneyYourSay throughout 2016 for more updates.

    All notifications are listed in our document library.

  • Construction update – December 2015

    over 1 year ago

    Work to build the Green Square stormwater drain is progressing well. As we head into the festive season, here’s a brief update on what we’ve been up to and what’s coming up in the New Year.

    Alexandra Canal

    We are getting ready to start installing the western-most section of the drain, from Maddox Street to the Alexandra Canal in Alexandria.

    Over the last 6 months, we have done extensive site investigations in the area that have led to a change in how we will build the drain. We found a more complex network of utility services running under Huntley Street... Continue reading

    Work to build the Green Square stormwater drain is progressing well. As we head into the festive season, here’s a brief update on what we’ve been up to and what’s coming up in the New Year.

    Alexandra Canal

    We are getting ready to start installing the western-most section of the drain, from Maddox Street to the Alexandra Canal in Alexandria.

    Over the last 6 months, we have done extensive site investigations in the area that have led to a change in how we will build the drain. We found a more complex network of utility services running under Huntley Street than was previously thought. This means we can no longer install a box culvert under the road. Instead, we will widen the existing open channel between Maddox Street and the canal.

    We expect this work to start in late January and continue for about 12 months. We will be working within Sydney Water’s easement, but also on and under Huntley Street. During this time, there will be temporary changes to traffic and parking arrangements. We are meeting with businesses in the area to discuss these and explain how we will manage impacts.

    We will post more detailed information about the work on this page before construction starts.

    In and around Green Square

    We have been microtunnelling in and around the Green Square area for almost five months. We have tunnelled more than 1 kilometre between Joynton Avenue in Zetland and O’Riordan Street in Alexandria and installed over 490 pipes.

    We expect to start installing the drain under O’Riordan Street in mid-January. We will launch the tunnelling machine from our work site at 15 O’Riordan Street and retrieve it from a pit on the opposite side of the road, at 20 O’Riordan Street. The machine will dig a path under the road, into which we install the pipes.

    We will be working at the 15 O’Riordan Street site 24 hours, seven days a week for about three months. This is because we have identified hard rock in the area and the tunnelling machine must operate continuously until it reaches the retrieval pit, for safety and operational reasons.

    We are working closely with businesses and residents in the O’Riordan Street area to keep them informed of our activities.

    Link Road to Joynton Avenue

    We have almost finished the detailed design for the eastern-most section of the drain, from Link Road to Joynton Avenue in Zetland, and expect to start work in January. The first thing we will do is relocate some existing underground services so we do not damage them during construction. We will do this work on land owned by the City and private property.

    We expect to start installing the drain in the next few months. We will provide more detailed information soon about what this will involve.

    Christmas shutdown

    The project will close for the festive season on Wednesday 23 December and will reopen on Monday 4 December. No construction work will be happening during this time.

    Sydney Water, the City of Sydney and the DG Alliance would like to thank you for your ongoing patience during this important work, and wish you a happy and safe holiday season.


  • Green Square Stormwater Drain Project – have your say

    over 1 year ago

    We are conducting a survey to understand your experience during the initial construction of the Green Square Stormwater Drain Project which will help reduce hazardous flooding in your area.

    Have your say on the Green Square Stormwater Drain Project.

    This is your opportunity to tell us what you think of the work we are doing, how we are doing it and how it’s affecting you. Your feedback will help us understand what’s important to you and how we can improve the way we plan, manage and deliver future projects in your area.

    We have engaged an independent research company, Taverner... Continue reading

    We are conducting a survey to understand your experience during the initial construction of the Green Square Stormwater Drain Project which will help reduce hazardous flooding in your area.

    Have your say on the Green Square Stormwater Drain Project.

    This is your opportunity to tell us what you think of the work we are doing, how we are doing it and how it’s affecting you. Your feedback will help us understand what’s important to you and how we can improve the way we plan, manage and deliver future projects in your area.

    We have engaged an independent research company, Taverner Research, to conduct the survey and will keep your responses confidential and will not identify you in any data or reports.

    Your feedback is important to us and will help us properly understand the impacts of the project.