Brodie, I. (2011) Application of level spreader – grass filter strips in South East Queensland, Australia for discharge reduction and passive irrigation. In: 12th International Conference on Urban Drainage, 11-15 Sep 2011, Porto Alegre, Brazil .
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A WSUD practice that has been implemented in the United States is the level spreader – vegetated filter strip (LS-VFS). A typical LS-VFS incorporates a concrete channel with a level control weir (level spreader) that evenly distributes flow to a downslope vegetated filter strip designed for stormwater infiltration. The application of LS-VFS in Australia has generally received little attention. Given the absence of local information, this paper provides a 'proof of concept' analysis of LS-VFS as applied to South East Queensland conditions. The main focus of the analysis is to determine how compatible LS-VFS are in terms of meeting the prescribed WSUD frequent flow targets for urban stormwater discharges. Key LS-VFS design requirements were identified from the literature. A MUSIC model analysis was performed to evaluate the expected runoff reduction associated with a LS-VFS receiving stormwater from a Brisbane residential subdivision. Indicative criteria are proposed for design discharges, soil suitability and sizing of the filter strip dimensions. The potential of LS-VFS to provide 'passive' irrigation was recognized and the application of LS-VFS for sustaining green cover within urban open space was also analysed. Recommendations are made on further research and investigations on the Queensland application of LS-VFS technology.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||Listed as Approved PAP005094. No evidence of copyright restrictions preventing deposit.|
|Uncontrolled Keywords:||water sensitive urban design; WSUD; level spreader-vegetated filter strip; LS-VFS; passive irrigation; stormwater infiltration|
|Depositing User:||Mr Ian Brodie|
|Date Deposited:||26 Mar 2012 01:11|
|Last Modified:||18 Jul 2013 05:13|
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