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 Sept 2011, Porto Alegre, Brazil .
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Official URL: http://www.acquacon.com.br/icud2011/en/papers.php
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|
|Fields of Research (FOR2008):||09 Engineering > 0905 Civil Engineering > 090509 Water Resources Engineering|
|Socio-Economic Objective (SEO2008):||D Environment > 96 Environment > 9609 Land and Water Management > 960912 Urban and Industrial Water Management|
|Deposited On:||26 Mar 2012 11:11|
|Last Modified:||05 Jul 2012 09:01|
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