Managing flood risk and stormwater is critical for developments in coastal regions like Terrigal, NSW. Without careful planning, projects can face costly delays, compliance issues, and environmental risks.
At Apex Civil Engineers, we deliver innovative, practical, and compliant engineering solutions. For example, our Terrigal project shows how expert flood modelling and stormwater management can help developments navigate complex regulations and achieve approvals successfully.
The Terrigal project involved a proposed re-zoning requiring detailed flood modelling and stormwater studies. Specifically, the main objectives were to:
● Assess flood risk and predict potential inundation
● Design effective stormwater management solutions
● Support the Development Application (DA) with clear technical documentation
Because the site’s coastal location demanded precision in hydraulic modelling to ensure compliance and long-term sustainability.
We used industry-standard modelling practices and data aligned with the NSW Flood Risk Management Manual. This approach helped us assess floodplain behaviour and therefore guide risk-based decisions.
By simulating water flow and flood levels, we identified high-risk areas. Consequently, this informed the design of measures to protect people and assets.
We followed NSW planning guidance so that the assessments met DA requirements. Using advanced hydraulic and hydrological modelling tools, we simulated potential flood events and predicted:
● Inundation areas
● Flow paths
● Flood hazard levels
This allowed us to pinpoint high-risk zones and design mitigation strategies to safeguard the site and surrounding community.
We created a stormwater strategy that:
● Controls surface runoff
● Reduces flood risk to land and infrastructure
● Meets local council engineering standards
Additionally, guidelines from councils, like the City of Parramatta, shaped our stormwater solution. Our approach therefore balanced performance, cost, and compliance for long-term success.
Clients partner with us because we:
● Deliver end-to-end engineering solutions, from investigation to certification
● Ensure compliance with Australian engineering standards
● Translate complex data into practical, buildable solutions
● Streamline approvals and therefore project delivery
In fact, the Terrigal project shows how Apex blends technical expertise with strategic management for successful outcomes.
Clients partner with us because we:
● Deliver end-to-end engineering solutions, from investigation to certification
● Ensure compliance with Australian engineering standards
● Translate complex data into practical, buildable solutions
● Streamline approvals and project delivery
The Terrigal project shows how Apex blends technical expertise with strategic management for successful outcomes how Apex combines technical expertise with strategic project management to ensure successful outcomes.
Flood modelling and stormwater management are essential for safe, sustainable developments, especially in coastal NSW. Apex Civil Engineers delivers trusted solutions that not only protect your development but also simplify approvals and provide long-term value.
Contact Apex Civil Engineers today to discuss expert flood modelling, stormwater management, and civil engineering support for your next project.
Professional engineering services supporting a wide range of projects across Australia. From design and documentation to construction support and project delivery, we help ensure outcomes are compliant, efficient, and well-planned.
