Stormwater Engineering Solutions That Work

Efficient, compliant and sustainable drainage designs for residential and commercial developments.

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At NB Consulting Engineers, our stormwater engineering team delivers practical and compliant drainage solutions across residential, multi-residential and commercial projects. We work closely with architects, builders, developers and property owners to develop stormwater designs that are efficient, sustainable and aligned with regulatory requirements.

Our experience covers a wide range of projects, from stormwater management plans for new homes and subdivisions through to alterations and additions. We develop tailored drainage strategies that respond to site constraints, integrate with existing infrastructure and ensure appropriate stormwater discharge and flood protection.

For larger developments, we incorporate On-site Stormwater Detention (OSD), rainwater harvesting systems and Water Sensitive Urban Design (WSUD) principles to manage runoff and support sustainable outcomes. Our team also undertakes hydrologic and hydraulic analysis to assess the performance and capacity of existing and proposed systems.

In addition to design, we provide reporting and advisory services, including flood analysis and risk management reports to support development applications and approvals.

Our focus is on delivering practical, buildable stormwater solutions that perform effectively in the long term.

Core Services

Our stormwater engineering services support projects of all scales, delivering coordinated and compliant drainage solutions from concept through to approval and construction.

 

Stormwater Management Plans

We prepare stormwater management plans for residential, multi-residential and commercial developments, ensuring effective drainage and compliance with local authority requirements.

Key features & benefits:

  • Stormwater design for new developments and subdivisions

  • Solutions for alterations and additions

  • Integration with site conditions and constraints

  • Compliance with council and authority requirements

  • Clear documentation for approvals and construction

On-site Stormwater Detention (OSD)

We design OSD systems to control peak discharge rates and minimise downstream impacts, ensuring developments meet regulatory requirements.

Key features & benefits:

  • Design of compliant OSD systems

  • Flow control and discharge management

  • Integration with site layout and infrastructure

  • Support for council approvals

  • Improved flood and runoff management

Water Sensitive Urban Design (WSUD)

Our team incorporates WSUD principles into stormwater design to promote sustainable water management and environmental outcomes.

Key features & benefits:

  • Rainwater harvesting system design

  • Reduction of stormwater runoff impacts

  • Improved water quality outcomes

  • Sustainable and environmentally responsive design

  • Integration with landscape and site planning

 

Hydrologic and Hydraulic Analysis

We undertake detailed modelling and analysis of stormwater systems to assess performance, capacity and compliance.

Key features & benefits:

  • Assessment of existing and proposed drainage systems

  • Flow modelling and capacity analysis

  • Identification of flooding risks and constraints

  • Data-driven design recommendations

  • Compliance with relevant standards and guidelines

Flood Analysis and Risk Management

We provide flood assessments and risk management strategies to support planning approvals and ensure developments are resilient to flooding.

Key features & benefits:

  • Flood impact assessments

  • Risk identification and mitigation strategies

  • Support for development applications

  • Compliance with local and state requirements

  • Improved long-term site resilience

Integrated Stormwater Design Coordination

We work closely with other disciplines to ensure stormwater solutions are fully coordinated with the overall project design.

Key features & benefits:

  • Coordination with civil, structural and architectural teams

  • Integration with site grading and infrastructure design

  • Early identification of design conflicts

  • Streamlined project delivery

  • Consistent and accurate documentation

 
Let’s discuss how we can support your next project

Locations

We provide stormwater engineering services across key regions, supporting developments with local knowledge and practical design solutions.

Sydney

 

Stormwater design and flood analysis services for residential, multi-residential and commercial projects across metropolitan Sydney.

Gold Coast

 

Tailored drainage and stormwater solutions designed to suit local conditions and regulatory requirements.

Need a stormwater solution for your project?

Contact NB Consulting Engineers to discuss your requirements.

 
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 FAQs

 

  • We work on residential, multi-residential and commercial developments, including new builds, subdivisions and alterations.

  • Yes, we design compliant On-site Stormwater Detention systems to manage discharge and meet council requirements.

  • We provide flood assessments and risk management reports to support planning and approvals.

  • Yes, we apply WSUD principles and rainwater harvesting solutions where appropriate.

  • We work closely with architects, civil engineers and other disciplines to ensure a coordinated and effective design.