Modeling Sediment Reduction in Grass Swales and Vegetated Filter Strips Using Particle Settling Theory
Publication: Journal of Environmental Engineering
Volume 143, Issue 1
Abstract
Two of the most common and simple stormwater control measures are swales and filter strips. However, an overly simplistic one-size-fits-all design approach typically is used for these practices. To provide more flexibility in design, a coupled hydraulics and particle-settling model was created to predict swale and filter strip total suspended solids (TSS) reduction as a function of catchment area, longitudinal slope, side slope, cross section type (triangular swale, trapezoidal swale, or filter strip), and length. The hydraulics and hydrology models were based on Manning’s equation and the rational method, respectively, with the underlying requirement that the water quality design storm does not exceed the height of the grass. The particle-settling model was underpinned by the Aberdeen equation. The model predicts that triangular swales produce the least and filter strips the most TSS removal because of increased hydraulic retention time; trapezoidal swales had on average 10% greater TSS removal than triangular swales with similar design characteristics. Grass filter stormwater controls performed better with decreasing slope, increasing length, smaller catchment area, and shallower side slopes. Filter strips registered the majority of their TSS reduction within the first meter of their width and were insensitive to increases in longitudinal slope. This water quality design storm-abating modeling approach could be coupled with modeling for infrequent-return-interval storms to obtain dual benefits of sediment reduction and conveyance. This water quality model may provide regulatory agencies a tool to provide variable TSS credit to swales and filter strips as a function of design.
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Acknowledgments
The authors wish to recognize the North Carolina Department of Transportation (NCDOT) for funding this research. We thank the sedimentology laboratory at North Carolina State University for performing the PSD analysis on the stormwater samples.
References
Albaladejo Montoro, J., Alvarez Rogel, J., Querejeta, J., Diaz, E., and Castillo, V. (2000). “Three hydro-seeding revegetation techniques for soil erosion control on anthropic steep slopes.” Land Degrad. Dev., 11(4), 315–325.
Andral, M. C., Roger, S., Montréjaud-Vignoles, M., and Herremans, L. (1999). “Particle size distribution and hydrodynamic characteristics of solid matter carried by runoff from motorways.” Water Environ. Res., 71(4), 398–407.
ARC (Atlanta Regional Commission). (2001). Georgia stormwater management manual, 1st Ed., Vol. 2, Technical Handbook, Atlanta.
Bäckström, M. (2002). “Sediment transport in grassed swales during simulated runoff events.” Water Sci. Technol., 45(7), 41–49.
Barrett, M., Lantin, A., and Austrheim-Smith, S. (2004). “Storm water pollutant removal in roadside vegetated buffer strips.” Trans. Res. Rec., 1890, 129–140.
Barrett, M. E., Kearfott, P., and Malina, J. F. (2006). “Stormwater quality benefits of a porous friction course and its effect on pollutant removal by roadside shoulders.” Water Environ. Res., 78(11), 2177–2185.
Barrett, M. E., Walsh, P. M., Malina, J. F., and Charbeneau, R. J. (1998). “Performance of vegetative controls for treating highway runoff.” J. Environ. Eng., 1121–1128.
Berbee, R., Rijs, G., de Brouwer, R., and van Velzen, L. (1999). “Characterization and treatment of runoff from highways in the Netherlands paved with impervious and pervious asphalt.” Water Environ. Res., 71(2), 183–190.
Bochet, E., and García-Fayos, P. (2004). “Factors controlling vegetation establishment and water erosion on motorway slopes in Valencia, Spain.” Restor. Ecol., 12(2), 166–174.
Caputo, M., and Carcione, J. M. (2013). “A memory model of sedimentation in water reservoirs.” J. Hydrol., 476, 426–432.
Chin, D. A. (2006). Water resources engineering, 2nd Ed., Pearson Prentice Hall, Upper Saddle River, NJ.
Davis, A. P., Stagge, J. H., Jamil, E., and Kim, H. (2012). “Hydraulic performance of grass swales for managing highway runoff.” Water Res., 46(20), 6775–6786.
Deletic, A. (1999). “Sediment behaviour in grass filter strips.” Water Sci. Technol., 39(9), 129–136.
Deletic, A. (2005). “Sediment transport in urban runoff over grassed areas.” J. Hydrol., 301(1–4), 108–122.
Deletic, A., and Fletcher, T. D. (2006). “Performance of grass filters used for stormwater treatment—A field and modelling study.” J. Hydrol., 317(3–4), 261–275.
Eck, B. J., Winston, R. J., Hunt, W. F., and Barrett, M. E. (2012). “Water quality of drainage from permeable friction course.” J. Environ. Eng., 174–181.
Efron, B. (1987). “Better bootstrap confidence intervals.” J. Am. Stat. Assoc., 82(397), 171–185.
Freeze, R. A., and Cherry, J. A. (1979). Groundwater, Prentice-Hall, Englewood Cliffs, NJ.
Gharabaghi, B., Rudra, R. P., and Goel, P. K. (2006). “Effectiveness of vegetative filter strips in removal of sediments from overland flow.” Water Qual. Res. J. Can., 41(3), 275–282.
Han, J., Wu, J. S., and Allan, C. (2005). “Suspended sediment removal by vegetative filter strip treating highway runoff.” J. Environ. Sci. Health, Part A, 40(8), 1637–1649.
Hillel, D. (1980). Fundamentals of soil physics, Academic Press, New York.
Hunt, W. F., Fassman, E. A., and Winston, R. J. (2016). “Designing dry swales for the water quality event.” 〈http://www.bae.ncsu.edu/stormwater/pubs.htm〉 (Jun. 10, 2014).
Hunt, W. F., Hathaway, J. M., Winston, R. J., and Jadlocki, S. J. (2010). “Runoff volume reduction by a level spreader-vegetated filter strip system in suburban Charlotte, North Carolina.” J. Hydrol. Eng., 499–503.
IADNR (Iowa Department of Natural Resources). (2010). “Iowa stormwater management manual. Version 1.” 〈http://www.iowadnr.gov/Environment/WaterQuality/WatershedImprovement/WatershedBasics/Stormwater/StormwaterManual.aspx〉 (May 5, 2014).
Kirby, J. T., Durans, S. R., Pitt, R., and Johnson, P. D. (2005). “Hydraulic resistance in grass swales designed for small flow conveyance.” J. Hydraul. Eng., 65–68.
Knight, E. M. P., Hunt, W. F., and Winston, R. J. (2013). “Side-by-side evaluation of four level spreader-vegetated filter strips and a swale in eastern North Carolina.” J. Soil Water Conserv., 68(1), 60–72.
Kuichling, G. (1889). “The relation between the rainfall and the discharge of sewers in populous districts.” ASCE Trans., 120, 1–56.
Line, D. E., and Hunt, W. F. (2009). “Performance of a bioretention area and a level spreader-grass filter strip at two highway sites in North Carolina.” J. Irrig. Drain. Eng., 217–224.
Lucke, T., Mohamed, M. A. K., and Tindale, N. (2014). “Pollutant removal and hydraulic reduction performance of field grassed swales during runoff simulation experiments.” Water, 6(7), 1887–1904.
McIntyre, J. K., et al. (2015). “Soil bioretention protects juvenile salmon and their prey from the toxic impacts of urban stormwater runoff.” Chemosphere, 132, 213–219.
Mulvaney, T. J. (1851). “On the use of self-registering rain and flood gauges in making observation of the relation of rainfall and floods discharges in a given catchment.” Proc. Inst. Civ. Eng. Ireland, 4, 18–31.
Muschack, W. (1990). “Pollution of street run-off by traffic and local conditions.” Sci. Total Environ., 93, 419–431.
NCDENR (North Carolina Department of Environment and Natural Resources). (2009). “Stormwater best management practices manual.” 〈http://portal.ncdenr.org/c/document_library/get_file?uuid=8d31df9b-cc13-428b-931c-b64f8832d7f5&groupId=38364〉 (May 20, 2014).
NCDENR (North Carolina Department of Environment and Natural Resources). (2010). “Stormwater best management practices manual.” 〈http://portal.ncdenr.org/c/document_library/get_file?uuid=5d698f00-caaa-4f64-ac1f-d1561b4fd53d&groupId=38364〉 (May 7, 2014).
NCDENR (North Carolina Department of Environment and Natural Resources). (2014). “Potential minimum design criteria for pollutant removal swales–December 15, 2014 MDC team discussion.” 〈http://portal.ncdenr.org/web/lr/state-stormwater/mdc-team〉 (Jul. 7, 2015).
Newcombe, C. P., and Jensen, J. O. (1996). “Channel suspended sediment and fisheries: A synthesis for quantitative assessment of risk and impact.” N. Am. J. Fish. Manage., 16(4), 693–727.
Pagotto, C., Legret, M., and le Cloirec, P. (2000). “Comparison of the hydraulic behavior and the quality of highway runoff water according to the type of pavement.” Water Res., 34(18), 4446–4454.
SCO-NC (State Climate Office of North Carolina). (2016). “Raleigh-Durham airport hourly precipitation data.” 〈http://climate.ncsu.edu/cronos/?station=KRDU〉 (Feb. 12, 2016).
Selbig, W. R., Bannerman, R., and Corsi, S. R. (2013). “From streets to streams: Assessing the toxicity potential of urban sediment by particle size.” Sci. Total Environ., 444, 381–391.
Stokes, G. G. (1845). “On the theories of the internal friction of fluids in motion, and of the equilibrium and motion of elastic solids.” Trans. Cambridge Philos. Soc. Part III, 8, 287–320.
Strecker, E. W., Quigley, M. M., Urbonas, B. R., Jones, J. E., and Clary, J. K. (2001). “Determining urban storm water BMP effectiveness.” J. Water Resour. Plann. Manage., 144–149.
Sweka, J. A., and Hartman, K. J. (2001). “Effects of turbidity on prey consumption and growth in brook trout and implications for bioenergetics modeling.” Can. J. Fish. Aquat. Sci., 58(2), 386–393.
TCEQ (Texas Commission on Environmental Quality). (2005). “Complying with the Edwards aquifer rules: Technical guidance on best management practices.”, Austin, TX.
U.S. EPA. (2007). “National water quality inventory: Report to congress—2002 reporting cycle.”, Washington, DC.
Venner Consulting and Parsons Brinckerhoff. (2004). “Environmental stewardship practices, procedures, and policies for highway construction and maintenance.” AASHTO Standing Committee on the Environment, Washington, DC.
Winston, R. J., and Hunt, W. F. (2016). “Characterizing runoff from roads: Particle size distributions, nutrients, and gross solids.” J. Environ. Eng., 04016074.
Winston, R. J., Hunt, W. F., Kennedy, S. G., Wright, J. D., and Lauffer, M. S. (2012). “Field evaluation of stormwater control measures for highway runoff treatment.” J. Environ. Eng., 101–111.
Winston, R. J., Hunt, W. F., Osmond, D. L., Lord, W. G., and Woodward, M. D. (2011). “Field evaluation of four level spreader-vegetative filter strips to improve urban stormwater quality.” J. Irrig. Drain. Eng., 170–182.
Yu, S. L., Kuo, J.-T., Fassman, E. A., and Pan, H. (2001). “Field test of grassed-swale performance in removing runoff pollution.” J. Water Resour. Plann. Manage., 168–171.
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Published In
Journal of Environmental Engineering
Volume 143 • Issue 1 • January 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jul 17, 2015
Accepted: Jun 2, 2016
Published online: Jul 19, 2016
Discussion open until: Dec 19, 2016
Published in print: Jan 1, 2017
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