Maximize the benefits of water sensitive urban designs in a local government area: Western Australia
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Until recently, stormwater management strategies have failed to adequately consider the criticality of spatially varying soil permeability values and their implications on drainage designs. This case study was carried out in new development areas, focusing on identification of soil properties and development of a typology of suitable stormwater management strategies with respect to applicable infiltration capacities. The Guelph Permeameter was used to investigate the in-situ saturated hydraulic conductivities. Test results were categorized into four main permeability groups, very rapid (> 1.56 m/day), rapid (0.48<1.56 m/day), moderate (0.12<0.48 m/day) and slow (<0.12 m/day), based on the theoretical requirements of stormwater management techniques. Finally, with the help of the existing soil maps, the point represent hydraulic conductivity data were been generalized logically in order to develop the hydraulic conductivity maps representing the areal average as an electronic shape files by using a GIS Arc view mapping software. The future development areas under Central Maddington, Kenwick, Central and Outer Beckenham have been identified as low permeable areas which is not suitable for infiltration based stormwater management strategies whereas the Landford, Thornlie, North Huntingdale and Gosnells has been identified as high permeable areas which is highly recommended for infiltration based stormwater management strategies.
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Kannangara, Dumal; Sarukkalige, Priyantha Ranjan (2011)Infiltration is identified as one of the best operational and sustainable methods to handle urban storm water. Until recently, in stormwater management designs and selection of best stormwater management strategies, ...
An innovative approach to stormwater management accounting for spatial variability in soil permeabilityKannangara, Dumal; Sarukkalige, Priyantha Ranjan; Botte, M. (2012)In the past few years, major flooding incidents have been experienced in Australia. This has resulted in increased concerns for local authorities, environmental institutions and the public, giving management of stormwater ...
Sarukkalige, Priyantha Ranjan (2012)Management of stormwater brings considerable economic, social and environmental benefits to the community in various ways. Controlling stormwater quantity is primarily important to prevent urban flooding and water stagnation. ...