WHAT WE DO

GRC Hydro is a hydrology and water engineering firm based in Sydney, Australia.

We offer specialist knowledge and expertise in the fields of hydrology, hydraulics and floodplain management.

We work with government and private clients to fully understand their flooding issues and help them to plan, mitigate and manage them effectively.

Our technical services consist primarily of floodplain management studies and flood impact assessments, while also including stormwater drainage and on-site detention design, hydrological studies for infrastructure, and post-event data collection.
SYDNEY METRO CITY & SOUTHWEST - STORMWATER DESIGN


Marrickville stormwater (GRC Hydro)

GRC Hydro are excited to be assisting in the detailed design of the Sydney Metro City and Southwest project in Marrickville. Sydney Metro is Australia's biggest public transport project and is being carried out by Transport for New South Wales, through Sydney Metro. GRC Hydro are applying best practice modelling procedures to ensure flooding and stormwater design requirements are achieved.
BARANGAROO PROJECT BEGINS REFERENCE DESIGN STAGE


Barangaroo (Wpcpey)

GRC Hydro have been engaged to carry out a flood study including assessment of stormwater drainage and flood risk as part of the development of Hickson Road at Barangaroo. The project is part of the landmark Barangaroo development that will include a new metro station, new public parks and residential, office and recreational spaces.
GRC HYDRO PROJECT WITH THE HOUSING CONNECTION



GRC Hydro have recently undertaken a flood assessment of the disabled housing redevelopment in Willoughby Council LGA on behalf of the Housing Connection. The proposal is for the addition of a second storey to an existing dwelling, to provide additional accommodation for people with disabilities. GRC Hydro are proud to be able to assist the Housing Connection in completing the flood study on a pro bono basis to accompany the development application in compliance with council’s LEP and DCP requirements for flooding.
OUR SERVICES

FLOOD
STUDIES

Flood Studies are undertaken to understand an area's local flooding regime through the modelling of historical and design flood events.

These studies establish an area's design flood behaviour and are the first stage in managing an area's flood risk

GRC Hydro is currently undertaking a number of flood studies around the state.
URBAN FLOOD MANAGEMENT
AND CONCEPT DESIGN

Urban flooding issues pose great risks to people and the built environment.

GRC Hydro works with local governments and developers to improve an urban area's capacity to manage and mitigate flooding issues.

Design solutions often involve stormwater drainage, on-site detention and minimum floor levels for buildings.
FLOODPLAIN RISK MANAGEMENT
STUDIES AND PLANS

The NSW Government assists Councils that contain flood-liable areas to undertake Floodplain Risk Management Studies and Plans.

These studies seek to fully understand the area's flood risk, and build on the area's Flood Study.

They describe the full range of effects of flooding in detail and develop a plan of floodplain risk mitigation measures to be carried out.

DA REPORTS
FOR COUNCIL

Development that is proposed in a flood-liable area is required to be designed and constructed in a way that does not adversely impact the local flooding regime.

GRC Hydro is able to undertake a localised flood study to determine your development's impact and devise ways to lessen the impact on design flood events, as part of the development application process

We also provide flood certificates describing a location's flood risk in relation to local legislation.
LAND AND ENVIRONMENT COURT
FLOOD EXPERTS

GRC Hydro is able to provide expert witnesses for flooding related Land and Environment Court proceedings.

GRC Hydro personnel have extensive experience in this space and are able to offer their professional understanding and modelling capabilities to both public and private clients.

CLIMATE CHANGE
MITIGATION

Australia's climate is becoming more volatile and unpredictable. This is a trend that is not abating.

Increased irregularities in climate have affected the frequency and intensity of flooding in recent years.

GRC Hydro assists governments and developers to understand the potential risks that this trend poses to people, development and infrastructure and helps them plan for these risks.
OUR PROJECTS

RECENT WORK FROM GRC HYDRO

Yarralumla Creek (ACT Government)
YARRALUMLA CREEK FLOOD STUDY REVIEW AND MITIGATION WORKS
CLIENT: ACT GOVERNMENT/SMEC

The project consisted of updating the Yarralumla Creek Flood Study to incorporate ARR2016 methods, as well as assessing mitigation options. As part of the review of this study it was noted that significant revision of the original study was required. A WBNM/TUFLOW hydrologic/hydraulic modelling system was built, calibrated to three historic events and validated to Flood Frequency Analysis. Design flood modelling was undertaken using ARR2016 methods. Various flood mitigation works were analysed and progressed to concept design stage.
Michelago (GRC Hydro)
FLOOD STUDY AND FLOODPLAIN RISK MANAGEMENT STUDY FOR COOMA, BREDBO, MICHELAGO AND BERRIDALE
CLIENT: SNOWY MONARO REGIONAL COUNCIL

GRC Hydro is undertaking a series of flood studies and floodplain risk management studies for key towns in the Snowy Monaro Regional Council LGA, considering multiple sources of flooding. A suite of hydrologic and hydraulic models is being developed, calibrated using a mix of flood frequency analysis, historical flood data and joint calibration techniques. The studies are focussing on key development areas in each town, as well as investigating measures for existing flood risk. Each study will have community consultation sessions tailored to the local issues and history of flooding.
Canberra Light Rail Concept (Canberra Times)
CANBERRA LIGHT RAIL PROJECT
CLIENT: ACT GOVERNMENT/CAPITAL METRO/SMEC

The project involves flood modelling as part of the detailed design stage of the proposed Canberra Light Rail. Hydrologic and hydraulic analysis using a WBNM/TUFLOW modelling system was undertaken in order to assess criteria including depth over rail and flood impacts in design flood events. The modelling system provides high detail flood information over a large area.
Barangaroo (GRC Hydro)
HICKSON ROAD, BARANGAROO, FLOOD MODELLING AND DRAINAGE DESIGN
CLIENT: BARANGAROO DELIVERY AUTHORITY, WARREN SMITH AND PARTNERS

GRC Hydro is currently undertaking a hydraulic investigation for Hickson Road, inclusive of a proposed subterranean train station at Barangaroo. This is being executed by using a TUFLOW rainfall on grid model. The study’s main outcome will be the design of a trunk stormwater drainage system considering various constraints.
CONTACT US

Zac Richards
[email protected]
+61 432 477 036


Level 20, 66 Goulburn Street
Sydney NSW 2000
GRC Hydro Pty Ltd
Level 20, 66 Goulburn St,
Sydney, NSW 2000, Australia
ABN: 71 617 368 331