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Issue 4, 2018
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Effectiveness of roadside vegetated filter strips and swales at treating roadway runoff: a tutorial review

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Abstract

Water leaving roadside ditches has the potential to affect the quality of downstream waters. Vegetated filter strips (VFS's) and grassed swales (GS's) are often used to manage roadside ditches for water quality protection. This paper summarized field data from relevant studies to determine the efficiency of these two best management practices (BMPs) in removing nutrients and trace metals from roadside ditches, and discussed implications for downstream water quality, as well as driving factors that influence the performance of roadside VFS's and GS's. The literature examined shows that roadside VFS's and GS's are quite effective at reducing total suspended solids (TSS), while a mixed performance was reported for metal and nutrient removal. Based on the data, VFS's and GS's appear to be more effective at removing particulate-bound than dissolved pollutants.

Graphical abstract: Effectiveness of roadside vegetated filter strips and swales at treating roadway runoff: a tutorial review

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Publication details

The article was received on 08 Jul 2017, accepted on 23 Feb 2018 and first published on 27 Feb 2018


Article type: Tutorial Review
DOI: 10.1039/C7EW00230K
Citation: Environ. Sci.: Water Res. Technol., 2018,4, 478-486
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    Effectiveness of roadside vegetated filter strips and swales at treating roadway runoff: a tutorial review

    A. R. Boger, L. Ahiablame, E. Mosase and D. Beck, Environ. Sci.: Water Res. Technol., 2018, 4, 478
    DOI: 10.1039/C7EW00230K

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