Our Services
Specialist flood and stormwater engineering services delivered with senior-level expertise on every project.

ARR19 Hydrology & Hydraulic Modelling
Flood Studies
We conduct comprehensive flood studies combining ARR19 hydrology with detailed hydraulic modelling to support planning approvals, infrastructure design and floodplain risk management. Our studies are technically rigorous, defensible and tailored to the specific catchment and regulatory context.
- Flood Impact Assessments (FIA)
- Flood Frequency Analysis
- TUFLOW / HEC-RAS modelling
- 1D/2D linked hydraulic models
- Floodplain mapping & flood extents

Drainage Design & WSUD
Stormwater Management
We develop effective stormwater management plans and drainage designs that adhere to local regulations, Melbourne Water requirements and environmental standards. Our WSUD designs integrate water sensitive urban design principles to improve water quality and reduce runoff.
- Stormwater Management Plans (SMP)
- WSUD design & assessment
- Drainage design & sizing
- Melbourne Water approval support
- Integrated Water Management (IWM)

Advanced Numerical Modelling
Hydraulic Modelling
Our advanced hydraulic modelling services provide accurate predictions of flood behaviour for complex waterway systems. We use industry-leading software to simulate flood scenarios, assess infrastructure performance and evaluate mitigation options.
- TUFLOW 1D/2D/GPU modelling
- HEC-RAS steady & unsteady flow
- DRAINS urban drainage modelling
- Sensitivity & uncertainty analysis
- Model peer review & audit

Risk Management & Planning
Floodplain Management
We provide expert floodplain risk management advice for planning approvals, infrastructure projects and policy development. Our team has deep experience navigating Victorian planning overlay requirements and Melbourne Water approval processes.
- Land Zone & Overlay assessments
- Flood Overlay (LSIO/SBO/FO) advice
- Planning permit support
- Flood risk reporting for legal matters
- Floodplain management strategies

Independent Technical Review
Peer Review & Expert Reports
Floodplan provides independent peer review of flood and stormwater engineering reports, hydraulic models and drainage designs. We also prepare expert witness reports for VCAT, planning panels and legal proceedings.
- Independent peer review
- Expert witness reports
- VCAT & planning panel submissions
- Technical due diligence
- Quality assurance audits
Get Started
Discuss Your Project with Alice
Alice personally handles all enquiries and responds within one business day.
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