Stormwater Management Strategy – Donnybrook Greenfield Development

Creo Civil engaged Rain Consulting to assist with the functional design for the stormwater assets associated with a new Matilda Estate development in Donnybrook, located approximately 30km north of Melbourne’s CBD.

Initially, Rain Consulting was engaged to assist with concept-level flood and drainage investigation and mitigation for a large residential development in Donnybrook. As the project progressed, Rain also delivered a Stormwater Management Strategy and Functional Design of the Retarding Basin/Wetland assets.

Above & Beyond Strategies

Rain delivered the project in a few stages. The first task was to review Melbourne Water’s hydrologic and water quality models and provide recommendations to address identified issues.

Next, the RORB and MUSIC models were amended to support fit-for-purpose flood mitigation and water quality solutions, enabling the design of retarding basins, wetlands, sediment ponds, and supporting infrastructure. A pragmatic and collaborative approach, especially under tight time constraints, facilitated early alignment with Melbourne Water and efficient project progress.

Further deliverables included a Stormwater Management Strategy and functional design packages to obtain approvals from the local council and Melbourne Water for the key drainage assets: two sediment ponds, two wetlands, a waterway, and pipe infrastructure.

Rain delivered the following solutions.

• Expert advice
• Hydrological Modelling
• Hydraulic Modelling
• Water Quality Modelling
• Mitigation Modelling and advice
• Wetland / Retarding Basin Design
• Development advice
• Authority liaison and capacity building

• Melbourne Water Approved Functional Design Application for Wetland/Retarding Basin
• Melbourne Water Approved Stormwater Management Strategy, unlocking the development

Delivering fit-for-purpose stormwater strategies and functional designs for Matilda Estate—combining flood mitigation, water quality treatment, and collaborative engagement to create resilient, approved drainage assets for a growing community in Donnybrook.

The photo shown with this project is an artist’s representation.