DesignFlow

Residential WSUD
Coomera Waters, Queensland
Client: Austcorp
Coomera Waters is an excellent example of how water sensitive urban design can be successfully applied in a residential setting. It includes dual reticulation, rainwater tanks and complete integration of stormwater management into urban and landscape spaces including vegetated streetscape bioretention and parkscape wetlands. The project has been awarded numerous design, planning and engineering awards. Members of DesignFlow team have been involved in the project for almost a decade whilst employed at Ecological Engineering and DesignFlow. DesignFlow continue to design and supervise construction of WSUD elements for numerous stages.
 
Coomera Waters  

 
North Shore and Town Centre, Townsville, Queensland
Client: Stockland
Stockland are in the process of delivering 5000+ residential dwellings at NorthShore, Townsville. The mild slopes and dispersive soils has meant that the urban design is strongly informed by WSUD.
 
DesignFlow has developed WSUD strategies for the Town centre and Precincts 5 and 6, which include biofiltration cells, green drainage spines and wetlands. A key stormwater quality management element of Precinct 5 development is the incorporation of 6 ha of wetlands to treat the majority of stormwater runoff. The wetlands are located in a sensitive and protected marine environment which has provided design opportunities to showcase the different wetlands and intertidal protected zone.
 
Constructed wetlands are still in their infancy in the dry tropics and pose unique design challenges, such as extended dry seasons. DesignFlow have designed two types of wetlands, a shallow ephemeral wetland (2 ha) and a deeper more permanent pool wetland (4 ha), to compare operating performance. Each wetland will use different vegetation species dependent on the seasonal operation.
 
The wetlands are currently in construction and planting trials are due to commence shortly.
 
North Shore and Town Centre  

 
Mernda Villages, Victoria
Client: Stockland
Water Sensitive Urban Design initiatives at Mernda Villages include 40 streetscape stormwater raingardens, regional waterway restoration and a major constructed wetland designed to contribute to an Aquifer Storage and Recovery system. Sections of the waterway were designed by DesignFlow in collaboration with Breese Pitt Dixon, GbLA and Alluvium. DesignFlow worked with City of Whittlesea to assess and rectify the raingarden following the construction and building phases.
 
Mernda Villages  

 
Lochiel Park, South Australia
Client: Land Management Authority
The Lochiel Park ‘Green Village’ uses stormwater to support green streetscapes and parklands surrounding the development. Streetscape raingardens treat local runoff and two wetlands form landscape features and treat runoff from 260 hectares of external catchments. Harvested water from the wetlands will be stored in aquifers and used for non-potable demands in the estate and parkland irrigation. Council and SA Water liaison and buy-in was a major focus of the project.
 
Lochiel Park  

 
Gainsborough Greens, Queensland
Client: Mirvac
Gainsborough Greens involved the creation of over 2000 new dwellings along the edge of the Pimpama River floodplain. The sensitive nature of the waterways adjacent to the site has meant careful management of stormwateris required. DesignFlow is currently in the process of delivering a stormwater management strategy for the site involving the careful integration of constructed wetlands along the edge of the development zone. These wetland are now under construction and DesignFlow is overseeing this construction.
 
Lochiel Park  

 
Bahrs Scrub, Queensland
Client: Logan City Council
Bahrs Scrub is 800 hectares of rural residential land just west of Beenleigh which has been identified in the South East Queensland Regional Plan as a Local Development Area. As part of the plan making process for the site, Logan City Council commissioned DesignFlow to establish a stormwater strategy which protects the ecological value of Windaroo Creek which flows through Bahrs Scrub. The strategy involves creation of riparian corridors, stormwater treatment (bioretention and wetlands), waterway stability management, flood storage and preservation of fish passage.
 
 
 

 
Yarrabilba, Queensland
Client: Lend Lease
The first development precinct of Yarrabiliba, very large urban development south of Logan, has recently been design and approved. DesignFlow worked closely with Lend Lease and the design team to resolve a stormwater strategy that involves wetlands and bioretention systems to treatment stormwater, infiltration of treated stormwater to the sandy soils which exist on the site, small and large flood detention systems and a stormwater harvesting system to manage small stormwater flows and irrigation public open space. The strategy has been carefully integrated with retained significant vegetation and the urban design for the site.
 

 
Narre Warren North, Victoria
Client: VicUrban
DesignFlow led the design of two stormwater treatment wetlands as part of VicUrban's Narre Warren North residential development. Extensive consultation with VicUrban, City of Casey, Melbourne Water and VicRoads was undertaken to ensure the wetlands were designed, and will be maintained, to the satisfaction of all agencies. The design team (DesignFlow, GbLA and Alluvium) ensured the wetlands will effectively remove stormwater pollutants while creating a valuable landscape asset and linkage to the adjacent Troups Creek wetland.
 
Narre Warren North  

 
Evanston, South Australia
Client: Land Management Corporation
DesignFlow is currently developing a stormwater management strategy for five landholders in an area just south of Gawler in Adelaide’s Northern growth corridor. The project involves master planning drainage infrastructure for more than 250 ha of urban development to manage flooding, provide stormwater treatment and harvest water to supply public space irrigation.
 
 
 

 
Lucas, Alfredton West, Victoria
Client: Integra
DesignFlow developed an Integrated Water Management Plan (IWMP) for the Alfredton West Precinct Structure Plan which includes the Lucas site. The IWMP identifies objectives and an approach for meeting these objectives that will compliment other aspects of urban development. The IWMP was approved by Council and Central Highlands Water. Following the IWMP, DesignFlow is refining the design of elements such as wetlands, bioretention systems and retarding basin as well as determining optimal rainwater tank sizes for a range of allotment types. Protecting Winter Swamp, a local wetland from the impacts of urbanisation is an important consideration for water management at Lucas.
 
Lucas  

 
Diggers Rest Hydrology and Drainage Strategy, Diggers Rest, Victoria
Client: Investa Property Group
DesignFlow developed a precinct scale hydrology assessment and stormwater management strategy for the 380 ha site north west of Melbourne. The investigations and resultant integrated water management strategy were commissioned to inform the precinct structure plan (PSP) being developed for the site by the Growth Area Authority. Investigations included site interpretation of the existing drainage characteristics and assessment of likely post development hydrology including interaction with adjacent properties and infrastructure. A strategy was then developed to mitigate the impacts of urban development through the management of potential flood flows (retarding basins) and frequent runoff events (precinct wide WSUD strategy). Recommendations were made relating to augmentation of potable water supplies through rainwater tanks and regional stormwater harvesting.
 
Diggers Rest  

 
Zuccoli, Northern Territory
Client: Urbex Pty Ltd
DesignFlow initially developed a stormwater management concept for Stage 1 of the Zuccoli residential estate south of Darwin. The concept responded to the challenging climatic conditions and site specific natural features providing a unique and innovative solution which integrates WSUD into the broad landscape for the development. Following approvals, the concept is now progressing into design development in collaboration with the civil engineers and landscape designers.
 

 
Plantation Palms, Mackay, Queensland
Client: Xcel Properties
DesignFlow are delivering a WSUD strategy for a very large residential development in Eimeo, in the northern beaches of Mackay. The strategy involves the design of 2-3 large wetlands and numerous bioretention systems for stormwater quality improvement. The vegetated stormwater elements will integrate with and protect existing wetlands located on the site.
 
Plantation1  

 
Bowden Urban Village, South Australia
Client: Land Management Corporation
DesignFlow recently developed an integrated water plan for the inner city 15 ha redevelopment for 2,200 allotments. The plan involved estimates of water demands, identifying possible water sources (10 options considered), developing a Triple Bottom Line assessment tool, facilitating a Reference Group and proposing alternative water supplies and a governance structure.
 
DesignFlow is currently working with the design team for the public realm to integrate WSUD into streetscape and local parks.
 

 
Coomera Woods and Town Centre, Gold Coast, Queensland
Client: Coomera Town Centre Management
DesignFlow has developed a strategy to manage stormwater quality in the large high density residential precincts (5000 dwellings) surrounding the new town centre for Coomera. Integration of the WSUD elements into the public realm has occurred to provide environmental protection of McCoy’s Creek and to preserve functional and desirable outdoor spaces.
 

 
Epping Central, Victoria
Client: City of Whittlesea/Melbourne Water
DesignFlow developed a Stormwater Management Strategy, to inform the Epping Central Structure Plan, in conjunction with Water Technology. WSUD objectives were set in close consultation with Council and Melbourne Water. A number of opportunities for retrofitting cost-effective treatment systems immediately before water is discharged to Edgars and Darebin Creek were identified. The performance of a range of distributed options (e.g. rainwater tanks and streetscape/car park raingardens) were also assessed. Options were compared using multi-criteria analysis such as ease of administration and enforcement.