We have extensive experience in all aspects of flood hydrology and hydraulics.
We routinely develop hydrologic and hydraulic models of catchment systems, from a small urban catchment to a major river system. We understand the complexities of large catchment flood studies, including the importance of spatial variability in rainfall and hydrologic parameters, as well as the need to verifying rating curves. We routinely use a wide range of hydrologic and hydraulic models, including two-dimensional hydraulic models.
In addition to our core technical skills in flood modelling, some of our senior staff have been working in floodplain management for more than 3 decades. We have undertaken a large number of floodplain management studies to assess and manage existing flood risks, likely future flood risk and residual flood risk. We also have extensive experience in dam break flooding, flood damage and flood forecasting and warning investigations. We have had input to key policy documents, such as the New South Wales Floodplain Management Manual and Floodplain Management in Australia, Best Practice Principles and Guidelines.
Case studies

Tennant Creek Stormwater Investigation
Drainage characteristics in Tennant Creek are complex, particularly during large flow events
The key challenge was to develop an understanding of the drainage behaviour and limitations of the Tennant Creek network

Kilgariff Flood and Stormwater Management Plan
The site is affected by regional flooding from the Todd River
The key challenge was to define a drainage strategy that was sympathetic to the local environment

Katherine Flood and Flood Mitigation Studies
The key challenge for this project was to identify cost-effective flood risk management measures
The flood modelling showed that it is possible to significantly reduce flooding of properties in Katherine during smaller more frequent floods

Kalkarindji and Daguragu Floodplain Mapping Study
Kalkarindji is a growing major remote township
The NT Government wanted to identify flood-free land within the Kalkarindji township and environs

Borroloola Floodplain Mapping Study
Borroloola has a long history of flooding from the McArthur River
The study results assisted the NT Government to develop safer and more resilient communities

Adelaide River Town Flood Study
A comprehensive flood study and impact assessment of the Mackenzie River
The flood model results were used to identify the existing flood risk and flood hazards throughout the Adelaide River town

Mackenzie River Flood Study
A comprehensive flood study and impact assessment of the Mackenzie River
The results of the modelling studies were used in detailed design of the proposed levee

Mackay Ring Road
A major infrastructure planning study for the Mackay Ring Road
The completed report considered all potential impacts including flooding and community concerns

Pioneer River
Estimation of design flood discharges and flood levels along the Pioneer River
A comprehensive set of flood depth and hazard maps was developed for a range of design events

Maules Creek Coal Project
EIS Surface Water Impact Assessment and Water Management Plan
Assessment of site drainage, site water balance, flood impacts and water monitoring program

Fitzgibbon
A comprehensive flood and stormwater management strategy for the Fitzgibbon Urban Development Area
The strategy maximised developable area while ensuring no adverse impact downstream

Wivenhoe Dam Spillway Upgrade Alliance
Hydrologic and hydraulic modelling
Design of spillway upgrade to reduce flood risk to communities below Wivenhoe Dam

McArthur River Mine
Site water balance and flood risk assessment to support EIS for mine expansion
Ongoing advice on operations and management of risks

Bakers One
Trunk drainage assessment to support development opportunities
Developed an integrated suite of water quality and drainage infrastructure for the Bakers One catchment to facilitate future development

Springfield Development
Flood and stormwater management for one of Australia’s largest urban developments
The adopted strategy maximised the developable area of the site

Redbank Motorway Estate
Stormwater management plan for the proposed Redbank Motorway Estate
MIKE11 and TUFLOW modelling of the Brisbane River

Ipswich Motorway Upgrade
Expert opinion and detailed modelling following damage to abutments
Modelling allowed accurate assessment of hydraulic designs and flood impacts
Other projects
Wandoan Coal Project EIS Surface Water Studies
Wandoan, Queensland
Independent expert peer review of the hydrologic and hydraulic modelling, creek diversion and surface water management studies undertaken to determine the flood and surface water impacts of the proposed Wandoan Coal Project.
Xstrata Coal
Traveston (Mary River) Dam Flood Study Review
Gympie, Queensland
Independent expert peer review of the hydrologic (URBS/RORB) and hydraulic (MIKE 11) modelling of the Mary River undertaken for the proposed Traveston (Mary River) Dam.
Sunwater/Queensland Water Initiative
Hunter Valley Operations Carrington Pit Extension
Singleton, New South Wales
- Hunter River Flood and Erosion Assessment
- Stream Diversion Design
- Environmental assessment.
Isaac Plains Coal Mine
Moranbah, Queensland
- Isaac River Flood and Erosion Assessment
- Stream Diversion Design
- Environmental assessment
- Environmental Compliance
- Water Management Plan.
Middlemount Coal Mine
MIddlemount, Queensland
- Roper Creek Flood Study
- Environmental Compliance
- Water Balance.
Alice Springs Farms Area Flood Mapping Study
Two dimensional flood modelling of the Todd River downstream of Alice Springs to determine design flood levels including the impact of sediment transport.
Flood mapping for land use planning and emergency management.
Department of Planning and Infrastructure
Tallow Creek Flood Study
Two-dimensional flood modelling of Tallow Creek and its floodplain to assess the impact of various developments on flooding.
Byron Shire Council and various developers