Stormwater Drainage in Brisbane

  • 70+ Years of Combined Experience
  • End-to-End Project Delivery
  • 700+ Successful Job Completions

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A Pipe is Being Installed in a Hole in the Ground — CWD Group in Brisbane, QLD

Brisbane Stormwater Drainage

CWD Group is proud to support developers, project managers and local government clients across Brisbane with expert stormwater drainage solutions. Our team of civil engineers and flood engineers deliver tailored, site-specific designs that comply with Brisbane City Council and state regulatory standards.


From stormwater management plans and on-site detention systems to MUSIC modelling and drainage certification, we provide complete services to manage runoff and reduce flood risk. We also carry out drainage inspections, overland flow assessments and water-sensitive urban design to ensure your development is resilient, sustainable and future-proof.


With a deep understanding of local conditions and council requirements, our flood engineer team works closely with you to deliver effective, compliant outcomes on time and with minimal disruption. To find out more, call us today on (07) 3472 5918.

Supporting Projects From Concept to Completion

When it comes to stormwater drainage, flood assessments and civil infrastructure, CWD Group brings experience, accuracy and trust to every project. With a team of qualified flood engineers, civil designers and RPEQ-certified professionals, we’re committed to delivering high-quality outcomes that meet regulatory requirements.


We’ve successfully supported over 700 projects across residential, commercial and industrial sectors, working closely with developers, builders and local councils to provide reliable engineering support. Our tailored approach ensures each design aligns with your site conditions, development goals and compliance needs.


From stormwater design and flood modelling to water supply and wastewater connections, we offer end-to-end engineering services that simplify approvals and reduce project risk.


Backed by decades of experience and a proactive, solutions-driven team, CWD Group is your trusted partner for clear, practical civil design from concept to construction.
Let us help your project flow smoothly.

A Man is Fixing a Manhole Cover — CWD Group in Brisbane, QLD

Frequently Asked Questions

  • What is involved in a stormwater drainage design?

    A stormwater drainage design includes assessing site topography, rainfall data and runoff patterns to create an effective system that may include pipes, pits, swales, detention tanks and more. It also ensures compliance with local planning codes and integrates with surrounding infrastructure to prevent overflow or environmental harm.

  • What is On-site Stormwater Detention (OSD)?

    On-site Stormwater Detention (OSD) involves capturing and temporarily storing stormwater runoff to reduce the flow rate into public drains. It helps prevent downstream flooding and is often required for new developments. OSD systems are typically designed by civil engineers and certified as part of the stormwater management approval process.

  • What is a stormwater management plan?

    A stormwater management plan outlines how a development will manage runoff through appropriate infrastructure and environmental controls. It includes system design, detention requirements, erosion controls and maintenance strategies. Councils require these plans to ensure developments do not increase flood risk or degrade water quality in surrounding areas.

  • What approvals are needed for a stormwater system?

    Most local councils require engineering drawings, calculations and certifications for stormwater systems, particularly for subdivisions, new homes or commercial builds. These may need RPEQ certification in Queensland. Additional approvals may also apply if systems connect to public infrastructure or affect downstream flow paths.