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Stormwater Management & Drainage Design

Stormwater design solutions: solving tomorrow’s problems, today

 From implementing bio-retention basins in major subdivisions to and site-specific on-site detention for developments valued in the hundreds of millions, HDB provides innovative, sustainable, and cost-effective stormwater solutions.

Stormwater Management & Drainage Design Services

  • On-Site Stormwater Detention Systems (OSD Systems)
  • Water Sensitive Urban Design (WSUD)
  • End-of-pipe stormwater solutions
  • Stormwater management investigations & reporting
  • Works as executed plans (WAE)


Cost-effective stormwater solutions

Stormwater & drainage design mandate the careful balancing of a complex, and oftentimes competing, factors. As a multi-skilled consultancy, HDB provides developers, governments, and all relevant stakeholders with innovative solutions.

By leveraging our extensive industry experience and cutting-edge technologies, you get elegant, cost-effective solutions that perform today – and into the future.

Our unique service model affords us the flexibility to provide cost-effective and compliant stormwater management solutions that include:

  • Safety
  • Maintenance planning
  • Future repair cost
  • Community amenity
  • Space
  • Environment & topography
  • Aesthetics
  • Sustainability
  • Suitability
  • Yield


Stormwater designs by HDB address all relevant technical, policy, and day-to-day management issues.

Environmental Stormwater Management

Communities have never been more conscious of the impact their choices have on the environment. Implementing sustainable solutions to urban flooding and stormwater management is environmentally and socially responsible. With proper planning and design, these sustainable solutions are cost-effective.

HDB provide environmental and sustainable water management designs that mitigate the effects of development on the surrounding water, while also contemplating all relevant statutory, economic, and social factors.

Collaborative Stormwater Solutions

Private firms, like HDB, make up just one part of the ecosystem of responsibility for urban stormwater solutions. We collaborate with local and state governments, developers, community members, and other relevant stakeholders to design solutions that work for all.

Sewer and Water Design

HDB brings together over 30 years’ experience in dealing with Hunter Water and local council water and sewer authorities. From preparing the application to the final approval, HDB can assist you with the planning, design, and construction management of your subdivision servicing.

HDB are accredited with Hunter Water for Minor and Major Water and Sewer design. You benefit from our extensive local network of cost-effective plumbers, while we ensure receiving your Section 50 Certificate is hassle free.