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          • How to activate infrastructure stimulus through accelerated assessment
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          • GHD Advisory Delivers Landmark Rehabilitation Plan for Port Terminal
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          • A Flexible Approach to Using eDNA
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          • Fostering resilient workplace productivity
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        • Adani Carmichael Coal Mine Project
        • Changing the world in Toronto
        • David Kinniburgh named Regional General Manager - UAE
        • Designing a net-zero energy plan with the Australian Academy of Science
        • GHD Advisory supports BP Australia’s sustainable hydrogen feasibility study
        • GHD appointed to design new Navy facilities in Western Australia
        • GHD joins Australian Hydrogen Council
        • GHD Provides Social Distancing Solution to NHS Children’s Hospital
        • GHD to implement Digital Train Control for Cross River Rail
        • GHD is leading the way in Waste Management across Australia
        • GHD is taking the lead in the competition for future talent
        • Growing our natural resources expertise with addition of Niblett Environmental Associates team
        • Landmark UAE park named Education Project of the Year
        • Preparing Australian electricity systems for large-scale hydrogen production
        • Poll shows employees are uncomfortable returning to work without social distancing measures
        • Reinventing engineering for a rapidly changing world
        • Qatar field hospital designed from scratch in less than two weeks
        • Our industrial hygiene team keeps employees safe as they return to work
        • Transforming transport in regional South Australia
        • A balancing act: Getting to grips with biodiversity offsetting and mitigation banking
        • A message from Water for Women on International Women’s Day
        • AquaLAB Connect helps shape the digital future of water
        • Auckland’s Lightpath cycleway takes the lead with prestigious award
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        • Advising on one of Australia’s largest infrastructure transactions
        • Celebrating Australia’s top projects
        • Arizona water reclamation facility helps conserve groundwater
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        • Strength in North America highlights our ability to serve clients and communities in uncertain times
        • GHD Advisory named Australasia’s #1 technical advisor for transactions
        • GHD’s new NZ leader focuses on high performance
        • Demonstrating our market leadership in Canada
        • GHD appoints Sheila Mistry as People Leader for UK
        • GHD Advisory strengthens UAE team
        • Developing a first-of-its-kind mangrove park for UAE
        • Global merger delivers integrated data-led consulting
        • New operations lead will help drive growth in the northeast United States
        • GHD helps Middle East clients address energy challenges
        • GHD’s Global Digital Leader moves to North America
        • GHD helps students to embrace Indo-Pacific opportunities
        • Collaboration to provide innovative new wireless stormwater monitoring solution
        • GHD welcomes National Strategy to support a thriving hydrogen industry
        • New beginnings: How Nivine re-started her career in Australia
        • GHD Digital’s Jacyl Shaw named ‘Microsoft Executive Leader of the Year’
        • GHD reinforces strategic focus in North America
        • New operations lead will help drive growth in the northeast United States
        • GHD partners with Galliford Try on Yorkshire Water Civils Framework
        • GHD celebrates 10 years in Papua New Guinea
        • Creating a single source of truth for digital data
        • Top honors for water engineer
        • Welcome Jim Giannopoulos as our new Executive General Manager, Canada
        • Engineering a new future for Melbourne’s iconic 1920s Capitol Theatre
        • GHD at the centre of Australia's hydrogen industry development
        • GHD at WEFTEC 2019
        • Rising to meet the challenges of an evolving environmental market
        • GHD rises higher in global design rankings
        • GHD transforms Queensland’s Daydream Island resort
        • Saskya Hunter named as one of Australia’s Most Innovative Engineers 2019
        • How hybrid energy will unlock the potential of Northern Australia
        • More than 100 GHD global technical leaders connect with government and business leaders in Cairns
        • GHD helps young professionals navigate their careers in the digital age
        • GHD and Australia’s gas import industry set milestone
        • GHD Advisory appoints leader for UAE
        • GHD provides remediation services to Clydebridge Chemicals
        • Showcasing Pacific development projects and partnerships
        • GHD and FCG combine to enhance client services in Northern Australia
        • GHD helps Sydney Metro Northwest project arrive on time
        • GHD internship cements passion for development work
        • GHD wins NCE100 Impact in Energy award
        • GHD ranks among top design companies in North America
        • Industry leader, Kurt Beil, joins GHD as Market Leader, Environment
        • GHD a winner in the 2019 RoSPA Awards
        • GHD Young Professional recognised by Institution of Chemical Engineers
        • GHD appoints new Operations Manager, Qatar
        • GHD Digital launches AquaLAB to transform how the water industry operates in the digital age
        • Demonstrating the value of inclusion and making it happen
        • The future of the UK water sector - interview with Stewart Tennant
        • From Iraq to Australia – Marvin’s career journey
        • GHD acheives prestigious safety certification in Ontario
        • GHD announces the appointment of new Regional Principal to lead the northeast United States
        • New GHD Advisory leader sets pathway for future growth
        • GHD doubles down on growth
        • GHD technical award recognizes groundbreaking project
        • Harnessing hydropower potential in the Philippines
        • Grantley Hall – Blending the old with the new
        • GHD strengthens its rail capability
        • GHD helps to improve connectivity and boost sustainable travel
        • GHD honored by the Greater Kitchener Waterloo Chamber of Commerce for employee engagement
        • Infrastructure event connects with European clients
        • GHD recruits transmission expert to inspire innovation in energy sector
        • GHD app design wins at inaugural NSW Roads and Maritime Services Innovation Network Initiative
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          • GHD Digital’s expansion into North America focuses on Digital Disruption and the Fourth Industrial Revolution
        • GHD Digital’s expansion into North America focuses on Digital Disruption and the Fourth Industrial Revolution
        • GHD wins Asia Pacific award for pesticide container management project in the Pacific
        • GHD expands its air and noise modelling capability
        • Looking back on the 2018 GHD Challenge
        • GHD appoints Simon Light as new General Manager for Europe and Middle East
        • Looking back on the 2018 GHD Challenge
        • GHD appoints Simon Light as new General Manager for Europe and Middle East
        • Special moments for GHD’s Spatial team
        • GHD wins place on YORConsult2 framework
        • GHD sponsors global interns as part of Australia’s New Colombo Plan
        • GHD recognized as one of Waterloo Area’s Top Employers for 2019
        • GHD receives industry accreditation for its commitment to developing young engineers
        • Advising on one of Australia’s largest infrastructure transactions
        • GHD announces new Transportation Market Leader for Australia
        • GHD appoints new Indigenous Services Leader
        • Our year in review
        • How to thrive on your career journey
        • GHD celebrates opening of Lake Jackson, Texas office
        • What happens when majestic wind turbines come to town
        • GHD sets benchmark for environmental assessments in the Philippines
        • GHD recognised as a carer-friendly employer
        • GHD engineers new neuroscience department at Monash University
        • GHD extends its global tunnelling experience
        • Wednesday is “Poppy Day”
        • GHD helps improve management of pesticide containers in the Pacific
        • GHD Digital and Orange Business Services deliver instant intelligent insights to Australasian enterprises
        • GHD helps return Blacktown Native Institution to Indigenous custodians
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          • Reducing Air Pollution - Guiding clients through the complexities of the Medium Combustion Plant Directive
        • GHD grows UAE team to help take client projects from masterplanning to reality
        • GHD to deliver Australian Sports Partnership Program to build healthy, inclusive communities through sport.
        • GHD and Olsson Fire & Risk join forces in New Zealand and Australia
        • GHD wins Bronze at International Water Association Project Innovation Awards
        • GHD appoints new Market Leader – Water in Australia
        • GHD achieves Silver Corporate Partnership status with Institution of Chemical Engineers
        • GHD partners with Jacobs for longest section of Australia’s Inland Rail program
        • Omni-Means officially adopts GHD name and brand following merger completion
        • GHD expands Intelligent Transport Systems capabilities
        • Part-time geologist, full-time dad
        • GHD Digital and Mindtree create platform-based services to cater for digital transformation
        • GHD wins Engineers Australia award for Brisbane Airport runway resurfacing
        • GHD grows in the global environmental market
        • Massive roof replacement project recognised for engineering excellence
        • GHD is responding to the ‘fourth industrial revolution’ and client demand
        • Championing diversity in the workplace
        • Global leader helps GHD transform client service
        • Global survey charts GHD’s growth trajectory
        • GHD appoints new Technical Director in UK
        • Five ways to celebrate Indigenous peoples and culture
        • Water for Women announces the first round of research award recipients
        • Tasmanian renewable energy leaders share vision for collaborative future
        • GHD’s suite of services helps a new mine to proceed
        • GHD Advisory’s Infrastructure Investment and Economics (IIE) services go global
        • GHD and Water for Women Fund celebrate World Environment Day
        • GHD provides continuity of service to Wannon Water
        • Water for Women Fund celebrates Menstrual Hygiene Day
        • GHD is bringing Paris to Doha
        • GHD wins NCE100 Excellence in Water award
        • New approach to defend infrastructure from cyberattacks
        • GHD boosts operational performance in UK transport sector
        • Proud to be LGBTI, proud to be GHD
        • Ten tips for returning to work after parental leave
        • Prestigious appointment for GHD’s chief counsel in the United States
        • GHD announces new Operations Director in Manchester, UK
        • GHD a winner in the 2018 RoSPA Awards
        • GHD helps improve transport infrastructure in Papua New Guinea
        • Trailblazer to lead GHD’s Canberra and Southern NSW business
        • GHD in New Zealand diversifies its business with the launch of GHD Digital.
        • Five technologies that will drive your freight forward faster
        • GHD expands in the UAE with new Dubai office
        • GHD stars shine at Engineering Excellence Awards
        • LNAPL clean-up guidance released
        • GHD recognised as top engineering company
        • Four inspiring pieces of advice from Jamila Rizvi
        • Groundwater discharges may become subject to the Clean Water Act
        • Engineering innovation secures civil engineering excellence award
        • GHD and the Regional Municipality of York receive OPWA award for technical innovation
        • PFAS New fact sheets provide guidance on emerging contaminants
        • When a talented photographer becomes a bridge inspector
        • World Health Day
        • Confirming our commitment to Waterloo Region
        • Global insight for Australia’s electricity networks:
        • GHD in New Zealand boosts its business to support growth
        • GHD grows security offering in Sydney
        • GHD recognised for supporting Defence reservists
        • Global industry leader in power substation design joins GHD
        • GHD to deliver concept design for raising Warragamba Dam in Sydney
        • GHD Advisory expands to North America to support asset owners
        • Top five ingredients for Badgerys Creek Aerotropolis to rise
        • A message from Water for Women on International Women’s Day
        • Six ways to position yourself for success
        • What SaaS tells you about MaaS
        • New Colombo intern discovers a new side to engineering at GHD
        • GHD expands to Guildford, UK
        • Client service helps realise world-leading energy projects
        • Shaping the Western Sydney Aerotropolis
        • Young design pioneer recognised at BIM Awards
        • Client award highlights GHD’s safety focus
        • GHD announces new Manager for Sydney
        • GHD is recognised as employer of choice for gender equality for fourth year in a row
        • GHD strengthens digital leadership
        • GHD appoints new Legal Counsel, Europe and Middle East
        • Smart Seeds grows fresh ideas for future infrastructure
        • GHD enhances services for Chinese investors
        • GHD partners with Sydney Water for drought relief
        • GHD says “Bula” to New Colombo intern in Fiji
        • Pushing the boundaries of BIM
        • GHD is part of the growth trend in the trenchless market
        • GHD boosts capabilities to support social sustainability
        • GHD strengthens hydropower capability
        • Water for Women Fund Commences - Request for Proposals for WASH Research Awards
        • GHD helps deliver Water for Women Fund
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          • Tech Sprint generates game changing solution to construction productivity problem
        • GHD strengthens Board diversity
        • GHD outlines the future of project management
        • GHD contributes to UK’s Northern Energy Task Force
        • Continuing to invest in future leadership
        • I-TAP NQ turns to fresh ideas for North Queensland’s infrastructure challenges
        • Force main replacement work wins ACEC award in Arizona
        • GHD announces Market Development Director for Europe and Middle East
        • GHD announces record performance
        • Insights from the Infrastructure Investors Forum Australia
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          • GHD’s laptop donation supports women’s health services in Wagga Wagga
        • GHD expands to Tauranga
        • Infrastructure and logistics expert joins GHD Advisory
        • Ecological restoration earns landscape architecture award
        • GHD recognised as a leader in the global environmental market
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          • GHD tops technical advisor league table
        • GHD recognised globally as a design leader
        • New facility preserves Australian history for the future
        • GHD expands contaminated land capabilities in Queensland
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          • Energy storage project opens new horizons for remote microgrid
        • GHD highlights smart solutions for the mining sector
        • GHD storms to the top at RICS Yorkshire and Humber Awards
        • Global role highlights how sport changes lives
        • GHD expands contaminated land capabilities in Queensland
        • Energy storage project opens new horizons for remote microgrid
        • GHD highlights smart solutions for the mining sector
        • GHD storms to the top at RICS Yorkshire and Humber Awards
        • Global role highlights how sport changes lives
        • GHD leadership appointments capitalise on New Zealand infrastructure trends
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          • GHD helps revitalise open channel with new parkland
        • Wastewater rehabilitation work wins project of the year in Arizona
        • GHD announces new Chairman and executive directors
        • GHD ranks among top designers in North America
        • GHD announces new UK leader
        • GHDWoodhead and Creative Spaces launch new brand in New Zealand
        • GHD enhances energy security in the Kimberley
        • GHD continues streak of outstanding waste management achievements
        • From dump to park: GHD helps turn environmental issue into Saipan’s new landmark
        • GHD expands asset management team in Auckland
        • GHD improves road safety on Pokeno to Mangatarata corridor in New Zealand
        • Digital transformation and growth expert joins GHD Advisory
        • Beaton Client Choice Awards
        • GHD earns recognition for innovative projects in York Region, Ontario
        • GHD and Omni-Means merge to expand transportation services
        • GHD helps realise landmark footbridge in time for Australian Open
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          • GHD Challenge brings together construction industry to support charities
        • GHD announces its largest office in North America
        • GHD celebrates 50 years of contributions to Canberra and beyond
        • Push to change flexibility culture for both men and women earns GHD gender equality recognition
        • GHD demonstrates inspirational consulting leadership
        • GHD celebrates outstanding public works achievements
        • GHD Advisory supports asset owners in a transforming world
        • GHD wins global award for Guam landfill closure
        • Engaging stakeholders for irrigation success in Australia’s food bowl
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          • GHD celebrates outstanding achievements in South Australia
        • GHD channels multidisciplinary skills for landmark irrigation upgrade
        • GHD switches on the tap for new water technologies
        • GHD recognized globally for Guam landfill closure
        • GHD delivers transformational engineering projects for WA
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          • GHD’s Power team boosts capacity in Newcastle
        • GHD helps realise outstanding project management achievements
        • GHD shines at New Zealand consulting engineering awards
        • GHD unites UK operations under single brand
        • GHD engineers named Australia’s innovation leaders
        • GHD continues global growth trajectory
        • GHD adds momentum to Sydney transport team
        • GHD and SMEC joint venture appointed as Independent Verifier for Gold Coast Light Rail Stage 2
        • GHD sustains performance in global environmental market
        • GHD helps realise a new health research hub for UAE
        • Auckland’s Lightpath cycleway takes the lead with prestigious award
        • GHD announces new leaders in Australia
        • Disrupting Auckland – new urban ideas take centre stage at Smart Seeds Showcase
        • GHD hits refresh on governance structure
        • GHD’s rail business gathers momentum with new appointment
        • GHD recognises client service at its best
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          • Auckland’s Lightpath shines at NZ planning awards
        • Creating a new gateway to Western Australia
        • GHD recognized among top design companies in USA and Canada
        • Leadership transition builds on GHD’s model of success
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          • GHD leaders pledge for parity for International Women’s Day
        • High five for GHD’s waste management team
        • GHD supports Arriva’s success as it retains London Overground concession
        • GHD names new Europe and Middle East leader
        • GHD’s water leader acknowledged for global contributions
        • GHD supports Arriva's success as it begins the Northern Powerhouse transformation
        • GHD Woodhead steps up in global rankings
        • GHD’s Defence business grows in Australia
        • Extended water partnership builds on a record of success
        • GHD acknowledged by Consult Australia for industry leadership
        • GHD strengthens focus on Defence project delivery
        • GHD recognised for digital leadership
        • Working together to help mitigate climate change in Ontario
        • GHD strides forward with gender equality
        • GHD engineer achieves unique certification in Guam
        • Toowoomba infrastructure project wins big
        • GHD people help reimagine Western Sydney
        • GHD helps realise artistic visions in Christchurch
        • GHD's young professionals support kids in care
        • GHD appoints transportation leader in North Queensland
        • CRA Europe adopts GHD name
        • GHD celebrates 10 years in Nowra
        • Engineers Australia commends GHD’s gender diversity focus
        • GHD steps up in global rankings
        • GHD boosts New Zealand business with high-profile appointments
        • GHD appoints Defence Leader
        • GHD’s CEO among engineering leaders
        • GHD and CRA complete integration
        • GHD improves human and environmental wellbeing
        • GHD and GHA Livigunn grow together in the UK
        • GHD helps deliver first shared street in South Australia
        • Sydney ideas bloom at Smart Seeds
        • GHD ranks highly in North America
        • Video showcases bridge replacement work
        • GHD presents water innovations in Adelaide
        • GHD enhances services for health and aged care clients
        • Graduates join consulting ranks at GHD
        • GHD celebrates 10 years in Toowoomba
        • GHD helps achieve tunnelling milestones at Grosvenor Mine
        • GHD helps realize award-winning Levi’s Stadium in California
        • Infrastructure innovation blooms with Smart Seeds
        • CRA celebrates 10 years as one of Canada’s Best Managed Companies
        • GHD leads the waste sector four years in a row
        • Environmental accolade for GHD-CRA merger
        • Strategic appointment expands GHD’s Federal business
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          • GHD ranks highly for defence services
        • GHD enhances market presence in property and buildings sector
        • GHD supports Indigenous professionals of the future
        • GHD signs contract to transform Perth’s most congested roads
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banner-catastrophic-water

Preventing catastrophic water main failure

When water main networks fail it’s often big news as the flow on effects to communities can be significant, including water supply interruptions, traffic delays, damage to infrastructure and flooding of property.

By understanding the likely cause of failures and pinpointing risks across assets, utilities can be more proactive in preventing failures, more targeted in asset renewal, and reduce the impacts to their communities.

A recent project with Hunter Water Corporation in the Hunter Region, New South Wales, Australia demonstrates what can be achieved through innovative approaches to flood modelling.

Pipeline infrastructure

Hunter Water Corporation (HWC) has more than 5000 km of pressure mains in its water supply network. Like all water utilities, occasionally significant water mains breaks and leaks occur that attract community concern and media attention.

For the last three years HWC has aggressively targeted leakage as an area to improve, and investigated where major main breaks could occur that can put individuals at risk in their homes and on roadways.

 

HWC recognised that with sufficient information, they could proactively intervene to reduce the potential for failure of the highest risk assets. They could also delay scheduled renewal of low risk assets to focus on high risk assets.

In late 2018 HWC approached GHD to consider a solution.

Developing an ideal solution

While the leading industry solution would be to predict the flow direction using topography, and overlay this with road and property data to approximate the effects, this wouldn’t adequately meet HWC’s needs.

Nicholas Deeks, Technical Director – Hydrology, GHD, explains, “The ideal solution was to build two-dimensional flood models that account for the unique properties of each failure location.”

With this in mind, Nicholas tested that the proposed modelling approach could replicate historic events.

“We did this at three sites, and got a good match so we progressed by filtering the data down to assets that are likely to have the highest failure risk. We chose mains over 375 mm in diameter at five metre spacing, which resulted in 57,000 models.”

The project engaged our specialised spatial scientists in Perth and Brisbane, hydraulic modellers in Perth and Manila, and civil engineers in Newcastle. Ultimately, a database of consequences for each water main segment was produced so that HWC could target the high consequence mains for monitoring, renewal or replacement.

“Traditional manual methods used to build each flood model aren’t possible for 57,000 models. So we needed GIS tools and processes to automate the build; topography and model inflows were relatively easy, but hydraulic roughness was more challenging.”

The team developed new methods for estimating hydraulic roughness using a combination of machine learning algorithms, normalised difference vegetation index thresholds, road centerline buffers and classified Lidar data. A similar approach was adopted to derive building outlines.

“GIS processes made the whole solution possible; we created 57,000 model envelopes for each break point, and used these envelopes to ‘cookie cutter’ each of the model variables required to build 57,000 unique flood models. We used TUFLOW software to simulate the flood behavior, and by utilising new, heavily parallel computing methods and six graphics cards we cut the model run time from four years to six weeks.”

An innovative approach

While building and running flood models is ‘business as usual’ for GHD, the method for automating 57,000 flood models is unique and innovative. The approach allowed our client to understand a wide range of consequences and to take preventative action, saving money and addressing community concerns. GHD also benefits from efficiencies inherent to the new methods and automation.

By automating the flood modelling process, including the build, simulation and processing of results, the project is scalable: if a client has 100km of pipelines or 100,000km of pipelines, the method is the same.

The approach can predict consequences to cultural and environmental assets that could be damaged by large flows. This methodology can also be used to predict environmental consequences of oil pipeline failures, or chemical spills occurring on linear infrastructure.

By reducing failures, the community benefits from reduced traffic disruption, reduced water supply discontinuities, reduced damage costs and increased safety.


For more information, connect with our hydrology professional:

Nicholas DeeksNicholas Deeks

Technical Director – Hydrology, GHD
+61 8 6222 8956
Email Nicholas Deeks

 


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About GHD

GHD has a powerful global network of water skills and experience that we can apply to local scenarios. We offer a broad range of services covering feasibility studies, planning, design, project management, construction and asset management services as well as operational optimisation. Our people use selective research, perform pilot trials, fine-tune existing systems and transfer technologies from other industries to improve quality and manage asset costs. www.ghd.com/en/expertise/water

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