Posts Tagged ‘city as catchment’
Posted in Models by Kate Archdeacon on May 17th, 2013
Photo: Michael Wright, David Simmonds via Landezine
It’s nearly winter and hopefully time to replenish some of our urban water sources. Clearwater has recently published a great case study on the Royal Park Stormwater Harvesting project, which has evolved since its launch in 2006:
“The 1984 Royal Park Master Plan proposed the development of a wetland, which would provide a range of benefits to the local community. In 1998, following on from this preliminary idea, a stormwater harvesting system was included in the Master Plan, and the conceptual design was finalised in 2004. When Melbourne hosted the Commonwealth Games in 2006, there was a strong push for environmental initiatives. Given that the chosen site for the Athlete’s Village was adjacent to the proposed wetland location, the construction of the Village became the main driver to implement the wetland and stormwater harvesting project. It was completed in time for the 2006 Commonwealth Games and the area was included in the secure recreation zone of the Athlete’s Village.
Stormwater is diverted from an open Melbourne Water stormwater drain, which collects water from a 187ha catchment area. The diversion structure, which also acts as a sediment trap, allows only low flows into the constructed wetland which is 0.8ha in size. The treated water then flows into a 12ML storage basin, which allows overflow into Moonee Ponds Creek. This storage space was supplemented in 2008 by a 5ML underground tank, situated below one of the sporting fields. To ensure the water is fit-for-purpose, it is treated with UV light and held in a distribution tank prior to use for irrigation of the neighbouring golf course, sports ovals and parkland. To minimise human health risks, the water is applied at night-time through spray irrigation. The system has a back-up supply with a connection to potable mains water. Two water hydrants are also located in an adjacent street to allow trucks to fill up and use the treated water for irrigation of streetscape features.”
Read the full article on Clearwater’s site for more details and great pictures, or to download the case study as a PDF.