Flood Engineering Services

Comprehensive Flood Risk Assessment, Modelling & Mitigation Solutions Across NSW, VIC, QLD & WA

Expert Stormwater Engineering Solutions

At Apex Civil Engineers, we deliver expert flood engineering and floodplain management services tailored to residential, commercial, and infrastructure projects across New South Wales, Western Australia, Queensland and Victoria. Our team combines advanced modelling tools with deep local regulatory knowledge to assess flood risk, support council approvals, and design mitigation strategies that protect lives, assets, and communities.

Why Choose Our Flood Engineering Services

Poorly managed stormwater can cause significant risks to developments, including flooding, erosion, and compliance issues. Our stormwater engineering services help clients understand, quantify, and control these risks early in the planning process, enabling safer, compliant, and more resilient outcomes for every project.

Our Stormwater Engineering Services

We offer a complete range of flood engineering and management services to meet the specific needs of your project.

Flood Risk Assessment

We provide detailed flood risk assessments for residential, commercial, and infrastructure projects, identifying potential hazards and quantifying flood impacts. Our assessments guide design decisions, support regulatory approvals, and reduce risk to properties and communities.

Flood Modelling & Mapping

Using advanced hydraulic and hydrological modelling tools, we accurately simulate flood behaviour to predict inundation, flow paths, and hazard levels. These models inform mitigation strategies, council approvals, and resilient infrastructure design.

Flood Mitigation Design

Our team designs tailored flood mitigation solutions including levees, bunds, and retention basins to reduce peak flows and protect assets. These designs integrate with stormwater infrastructure to ensure long-term safety and compliance with planning regulations.

Stormwater Management

We provide comprehensive stormwater management solutions to control runoff, prevent erosion, and improve water quality. Our services include on-site detention systems, retention basins, and compliant drainage designs that reduce flood risk and enhance site performance.

Council & Regulatory Approvals

We assist developers with flood engineering documentation required for local council and state approvals. Our reports and designs ensure compliance with planning policies, expedite approval processes, and reduce liability for flood-prone developments.

Flood-Resilient Infrastructure Planning

We integrate flood risk considerations into civil project planning, including roads, drainage, and public spaces. This approach ensures developments are safe, functional, and resilient to extreme rainfall and riverine or coastal flooding.

Our Focus Areas

Our team specialises in flood engineering, flood risk assessment, and mitigation solutions, delivering safe, compliant, and resilient outcomes for residential, commercial, and infrastructure projects across NSW, VIC, QLD, and WA. We combine advanced modelling tools, regulatory knowledge, and practical design expertise to protect properties, infrastructure, and communities from flooding hazards.

Flood Risk Assessment & Site Investigations

Accurate flood risk assessment and site investigation is the foundation of safe and compliant flood mitigation. We conduct thorough assessments for residential, commercial, and civil projects, providing the data needed to inform flood modelling, mitigation design, and development approvals.

Our flood risk and site investigation services include:

Hydrological and hydraulic analysis – assessing catchment flows, river levels, and rainfall impacts to quantify flood risk.
Site-specific flood hazard evaluation – determining flood extents, depths, and velocities to guide mitigation strategies.
Detailed reporting – fully compliant with local and state planning regulations, providing clear guidance for council approvals and construction planning.

These investigations help reduce flood risk, support regulatory compliance, and improve project approval outcomes.

Flood Mitigation Design & Analysis

Our engineers provide tailored flood mitigation solutions to ensure developments are safe, resilient, and cost-effective.

Services include:

Levee, bund, and retention basin design – engineered to manage peak flows and reduce downstream impacts.
Integration with stormwater management – ensuring effective drainage and runoff control for residential, commercial, and public infrastructure.
Optimised design for compliance and performance – reducing flood damage risk and supporting long-term site resilience.

By combining flood risk analysis with practical mitigation design, we deliver reliable, regulatory-compliant solutions that protect communities and assets.

Frequently Asked Questions (FAQs)

What is flood engineering and why is it important?

Flood engineering involves assessing flood risks, designing mitigation strategies, and managing stormwater to protect properties and infrastructure. Effective flood engineering helps reduce damage, ensure safety, and comply with council and state regulations.

When do I need a flood risk assessment for my property?

A flood risk assessment is essential for properties in flood-prone areas, near rivers, or within development catchments. It identifies hazards, guides design decisions, and supports planning approvals to minimise potential flood damage.

What services are included in flood engineering?

Flood engineering services include flood modelling, floodplain management, mitigation strategy design, stormwater management, and council approval support. These services help residential, commercial, and infrastructure projects remain safe, compliant, and resilient.

How can flood mitigation protect my property?

Flood mitigation solutions, such as levees, bunds, retention basins, and stormwater management systems, reduce the impact of flooding on buildings and infrastructure. They help safeguard assets, minimise repair costs, and protect communities from flood hazards.

Do I need flood engineering for development approvals?

Yes, most residential, commercial, and infrastructure developments in flood-prone areas require flood studies to satisfy local councils and state authorities. Professional flood engineering ensures your project meets regulatory requirements and receives timely approvals.

How does Apex Civil Engineers approach flood risk management?

SOur team combines hydrological and hydraulic modelling, local regulatory knowledge, and practical design solutions to assess and manage flood risk. We provide tailored recommendations that support safer developments, protect communities, and reduce liability for clients.

What Our Clients Say

Our reputation is built on successful project delivery and long-term partnerships. Here’s what clients say about working with Apex Civil Engineers:

Samir was of really great service with a professional approach and can do attitude. I was impressed with APEX CE’s prompt service and quick delivery time. Look forward to our next business opportunity in the near future.

I recently used the APEX CE group for some of my Construction Certificate documents (Stormwater, Parking and Erosion/Sediments Plans). They were professional and easy to deal with, had a quick and timely turnaround and was very competitive in the quoting stage. I will definitely recommend Samir and his team for future projects.

I needed to install a detention pit as part of a Stormwater condition of my DA application but Samir proposed two rainwater tanks as a more feasible and cost effective alternative. I found Samir to be extremely reliable, knowledgeable and efficient. He promptly inspected my home, then drew the OSR Plans which were immediately approved by Ryde City Council. I would recommend Samir’s service to anyone.

I found Samir apart from having a professional approach to the building work to be a like able person to deal with Thanks again Samir Martin.

Stay Ahead of Rising Waters

Get expert support with flood risk assessment, detailed flood modelling, and tailored mitigation design. Our flood engineering team ensures your project is safe, compliant, and resilient in the face of flooding challenges.