Western Sydney Airport Drainage Network @ Zoom
Mar 3 @ 12:00 pm – 1:00 pm

Register here

One of Australia’s most significant infrastructure projects in decades, the Western Sydney Airport (WSA) will be an international and domestic airport with two runways, a terminal and airport facilities at the ultimate development stage. The WSA site has a total catchment area of 1400ha and is situated in the upstream reaches of Badgerys Creek. The proposed WSA trunk drainage network consists of approximately 48km of underground pipe network, 56km of open channels, 8 detention and 10 bioretention basins. Adding to the design complexity, the detailed design of the drainage network considered four milestone development stages concurrently.

This presentation outlines the stormwater management strategy of the WSA site and the design challenges to meet the specific airport operational requirements. Due to the significant change of the catchment characteristics throughout the 4 development stages, stormwater quality and quantity control requirements were a key target for the design. Other critical criteria for the design included maximum ponding duration and no supercritical flow conditions within the open channels. These were addressed through detailed DRAINS software modelling of storm events from the 4EY to the 1% AEP. The modelling challenges and learnings experienced in applying the ensemble of ARR 2019 temporal patterns are discussed. This includes the approaches used to resolve model instabilities associated with DRAINS modelling of the complex network of open channels, storages, headwalls, underground pipe network, diversion weirs and detention basins with associated inlet/outlet structures. The other modelling challenges were the building of large MUSIC models and incorporating the complex drainage network in the model.



2022 @ Dockside Darling Harbour
Mar 28 @ 9:00 am – Mar 30 @ 5:00 pm
Operations and Maintenance Manual Training @ Canada Bay Club, 4 William St, Five Dock NSW 2046
May 24 all-day

Workshop Overview


This workshop is aimed at Maintenance Managers and Cleaning Contractors, as well as Council staff involved in the sizing, siting and approval of stormwater treatment measures.  This is a new course developed by Stormwater NSW.

This workshop focuses on the new Operations and Maintenance Guidelines, produced by Stormwater NSW, that have become the industry standard and reference document for the maintenance of stormwater assets.

Topics to be covered include:

  • An introduction to the types of treatments, their classifications and purposes
  • An introduction to the types of GPTs and their functionality (if you understand how they work, then you’ll understand how this impacts cleaning)
  • The reality of monitoring, regular cleaning, and annual/comprehensive cleaning
  • Quick coverage of 90% of proprietary devices
  • A more detailed focus on the 4 devices that have 90% of the market
  • Cleaning specifications for these – to include in tenders, and be used on the ground
  • Secondary treatment/Green treatments – in summary only
  • Dewatering – a problem for every site
  • Field validation of performance, cleaning results
  • GPT auditing and WSUD auditing
  • Costing – how much should cleaning cost
  • Budgeting and bean counters – how to get the money to do it right
  • Results, reports and record keeping – why
  • Tips for improving device performance – get better bang for your buck

A copy of the Guidelines must be purchased for all attendees. Organisations registering multiple delegates are only required to purchase a single copy of the manual. 

Spaces are limited. Should you have any questions please contact GEMS Event Management Australia on +61 2 9744 5252 or email

Awards of Excellence Webinar @ Webinar - Zoom
Aug 23 @ 12:00 pm – 1:30 pm
Awards of Excellence Webinar @ Webinar - Zoom

Awards of Excellence Webinar – Showcasing the winners from 2021

This may give you the inspiration to submit a project in this years Awards of Excellence round.

This webinar showcases the work of our leading practitioners who are the winners of 2021 Stormwater NSW Excellence Awards. The attendees will have the opportunity to listen to presentations on these cutting-edge projects. This will inspire you either to start a smart contemporary project or start to think about preparing your submission for the 2022 awards that will be opening shortly.

The presentations will include:

• Johnstons Creek Naturalisation, the 2021 winner of Excellence in Asset Management by Sydney Water, Diona & Thompson Berrill Landscape Design, presented by Jordan Mulhearn.

• Blacktown’s Community Stormwater Education Program, the 2021 winner of Excellence in Policy or Education by Blacktown City Council, presented by Andrew Bridle and Julie Redhi.

• Manly – Safe and Beautiful once again, the 2021 winner of Excellence in Infrastructure by Northern Beaches Council & Optimal Stormwater, presented by Emerald Cuthbertson.

• Gannons Park Water Quality Improvement and Stormwater Harvesting Scheme, the 2021 winner of Excellence in Integrated Stormwater Design by Georges River Council, NSW Government, Australian Government, Alluvium & Civil Constructions, presented by Lucie Bright.

• BOM the Builder: A Free Online Meteorological Template Generator, the 2021 winner of Excellence in Research & Innovation by Cleanstormwater, presented by Mircea Stancu.

• Integrating Recycled Water and Stormwater in the Mamre Road Precinct: A Template for Australia’s Largest Water Sensitive City, the 2021 winner of Excellence in Strategic or Master Planning by Sydney Water, presented by Phil Birtles.

AR&R Workshop @ Canada Bay Club
Oct 17 @ 9:00 am – 1:30 pm
AR&R Workshop @ Canada Bay Club | Five Dock | New South Wales | Australia

Registration is open

Presenters: Mark Babister & Monique Retallick

Overview of ARR 

  • Rainfall Design Input

Attendees will increase their knowledge of the different rainfall-related design inputs in Australian Rainfall and Runoff, including Intensity Frequency Duration (IFD), temporal patterns, spatial patterns, and tips and tricks for their application.

  • Hydrologic modelling applications

This covers the different types of hydrologic models used to represent the runoff generation and runoff routing phases of the flood formation process.

  • Urban Approaches

Overview of the natural hydrologic cycle resulting from urbanisation and how these changes impact design flood estimation in urban environments. Covers urban flood modeling with examples of brownfields and Greenfields focusing drainage designs.


Note: The participants have to bring their own laptops.



franc.2023 @ Novotel Brighton Beach
Mar 28 – Mar 29 all-day
franc.2023 @ Novotel Brighton Beach | Brighton-Le-Sands | New South Wales | Australia


It has been confirmed, franc.2023 is happening!

Mark your calendars for Tuesday 28th and Wednesday, 29th March 2023 at Novotel Brighton Beach.

Call for Presentations will be opening soon, followed by registration – stay tuned!

Stormwater certification webinar @ on-line via zoom
Jun 26 @ 1:00 pm – 2:00 pm

This session will be an open platform for discussion to capture some of the main issues across the industry, around the perceived issues associated with the certification of stormwater infrastructure in private developments and for assets that will be handed over to Councils, covering both stormwater treatment and On-site Stormwater Detention.

In this webinar there will be 3 brief presentations from Councils, including April McKay from Mid Coast Council, Rob Barbuto from Northern Beaches Council, and Sugule Mohamed from Camden Council, about their experiences with certifiers.

This session will be an open platform for discussion to capture some of the main issues across the industry. There will be a second session on 25 July to discuss potential solutions to the issues raised in the first session and ways we can move forward as an industry. Stormwater NSW intends to approach the NSW Building Commissioner to discuss the issues raised and proposed solutions.

This session will be chaired by Ruby Ardren who has extensive experience with private development through her time at Northern Beaches Council and in doing research relating to the Governance of private stormwater assets.


Please forward this to others who you feel would have benefit from participating in this discussion. However, to join these webinars you (or your organisation) needs to be a member of Stormwater NSW. You can join Stormwater NSW via this link.

Financially Sustainable Options for Stormwater Management Funding in NSW
Sep 20 @ 9:30 am – 1:00 pm


We are excited to announce that registration is now available for the upcoming Sustainable Funding Options half-day Workshop on Wednesday, 20 September at Campsie Customer Service Centre l Canterbury Bankstown Council, Campsie. This workshop will be presented by Craig Bush, Dr Andrew Thomas, Craig Naughton, Neil Keraunos & Alexa McAuley.

What you gain from this Workshop:

To ensure stormwater management projects, programs and assets achieve their desired goals a sustainable source of funding is required throughout the whole lifecycle. Current funding models, especially the Stormwater service charge, are not a sustainable option due to significant increases in costs relating to waste disposal, wages, and inflation (construction costs in particular) and no mechanism for review. However, due to the effects of urban expansion and climate change impacts, the need for well-designed and properly maintained stormwater management systems is only becoming more critical.

This forum will provide information as to how Councils are resourcing stormwater management in different ways and to discuss the benefits and or limitations of each option. Come to hear from representatives from Ku-ring-ai, Canterbury Bankstown, Blacktown, and Hornsby, and industry experts in this field. After the presentation, there will be an open forum for discussion regarding the options and opportunities to ask questions to the presenters and others.


  • Member – $125
  • Non-Member – $225

Payment online at the time of registration by credit card only.


  • Wednesday, 20 September 2023
  • 9:30 am to 1:00 pm
  • Campsie Customer Service Centre, Canterbury-Bankstown Council
  • Registration includes morning tea catering

Please note that it is a requirement that all participants bring their own laptop to the workshop.

Spaces are limited, so be sure to secure your attendance early! Please click here to register.


Meet your Presenters

Andrew Thomas – Cooks River Alliance/Stormwater NSW

Over the past 30 years, Andrew has gained experience in industries as diverse as heavy industry, environmental management, and asset management across the government, consulting, research, and not-for-profit sectors. Andrew is currently the Executive Officer for the Cooks River Alliance and Acting President of Stormwater NSW (peak body representing the urban water management industry in NSW, Australia).  


 Craig Bush – Blacktown City Council/Sydney Water 

Craig has over 13 years’ experience in working with Blacktown City Council, the largest council by population in NSW, as the catchment projects officer and since 2021 as the Waterways Coordinator. He has a key focus on WSUD and integrated water management to ensure the best outcome for the environment and community.

Craig will start a new role in September 2023 as a Senior Stormwater Planner for Sydney Water.



Craig Naughton – Ku-rin-gai Council

Craig is a passionate environmentalist who wants to see all the great aspirational ideas that occur in the industry become sustainable long-term programs. By solving problems and working with people, Craig makes environmental solutions practical and achievable.

Craig is currently the Water and Catchment Program Leader at Ku-ring-gai Council.



Alexa McAuley – Civille

Alexa has more than 20 years’ experience in green and blue infrastructure policy, planning and design. Alexa has substantial experience consulting to local government and has helped many local government clients shift water-sensitive urban design from a niche practice to a mainstream activity. In 2021 Alexa reviewed the state of stormwater management in 20 councils across the Greater Sydney Harbour catchment, including a review of financial arrangements.



Neil Keraunos

Neil has been involved in catchment remediation for over twenty years in his role at Hornsby Shire Council. He has been responsible and has contributed to hundreds of projects in relation to treating stormwater pollution and has actively supported the principles of Water Sensitive Urban Design of remediating water pollution in urbanized catchments in regards to the catchment remediation rate program. Neil was awarded a Master of Science (Research) (UTS) in 2008 in water cycle management.


Site Tour – Bioretention Monitoring Project in Blacktown City Council @ The Ponds Community Hub
Oct 19 all-day

Come and join Blacktown City Council as they share with the industry, information about a large scale bioretention system validation and optimising project they are undertaking. This is a collaborative project involving Blacktown Council, the NSW Government through the Accelerated Infrastructure grant, Ocean Protect and ALS Global. With a view to forming a collaborative partnership, we are in discussions with Western Sydney University to explore the significant multidisciplinary research opportunities created by the project and Western Sydney University.

This monitoring project is possibly the largest of its kind in Australia and will provide an unprecedented level of rigour to the monitoring of various aspects of a bioretention system over a 5-year period including the water quality performance of:

  • 6 different filter media types,
  • 3 different inlet types,
  • grass vs vegetated systems.

The monitoring project will also monitor other components including:

  • performance (water quality and waste removal) of 2 gross pollution traps
  • effectiveness of saturation zones
  • vegetation condition and maintenance requirements
  • benefits of these systems to combat urban heat.

Who would benefit from attending:

  • Practitioners from Local & State Government
  • Consultancy involved in design of bioretention systems and setting policy standards

This session will include a mix of presentations about the project from Blacktown City Council and Ocean Protect. The event will include a visit to the monitoring site where you will be able to see it in action. We have organised for transport to / from Blacktown train station and Tallawong metro stations for those who register they need it.

To register for this event please complete this registration form.  If you have any troubles registering please call Kristy Good on 02 9839 6907 or email

End of Year Networking Drinks @ Forrester's
Nov 16 @ 5:30 pm – 7:30 pm

Stormwater NSW is excited to announce our End of Year Drinks for 2023. This is a great opportunity to get all the stormies together, and the committee is looking forward to catching up with you all.

We would love to hear your thoughts on the year that’s been and ideas for the year ahead.

Date: Thursday, 16th November

Time: 5.30 pm – 7.30 pm

Location: Forrester’s, Surry Hills

336 Riley St, Surry Hills NSW 2010

Cost: Members: Free, Non-Members $35.00.

Registration includes one complimentary drink and nibbles.

Final day to RSVP: Monday, 13th November 2023

To register, please click here