Our team provided design recommendations for biofiltration systems in the western suburbs of Melbourne. The project responded to the growing reticence within local government and the development industry regarding their suitability to the drier climate experienced in Melbourne's West. Investigations were undertaken to understand factors that may cause failure, and what may be modified to prevent future problems. Predictive modelling of soil moisture levels within the filter media (growing media for the plants) during extended dry periods. Design recommendations were provided on appropriate responses to address the risk of vegetation failure due to low soil moisture conditions. Healthy rain gardens are achievable in areas with low rainfall but it is important that design features and plant selection respond to soil moisture availably with long term rainfall and the impacts of upstream WSUD systems taken into account.
Water Sensitive City Outcomes:
- responsive design for climate
- stormwater quality improvement
- landscape design
