Factors affecting the hydraulic performance of infiltration based SUDS in clay

B. Bockhorn, K.E.S. Klint, Luca Locatelli, Y. Park, Philip John Binning, E. Sudicky, Marina Bergen Jensen

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Abstract

The influence of small scale soil heterogeneity on the hydraulic performance of infiltration based SUDS was studied using field data from a clayey glacial till and groundwater simulations with the integrated surface water and groundwater model HydroGeoSphere. Simulations of homogeneous soil blocks with hydraulic properties ranging from sand to clay showed that infiltration capacities vary greatly for the different soil types observed in glacial till. The inclusion of heterogeneities dramatically increased infiltration volume by a factor of 22 for a soil with structural changes above and below the CaC03 boundary. Infiltration increased further by 8% if tectonic fractures were included and by another 61% if earthworm burrows were added. Comparison of HydroGeoSphere infiltration hydrographs with a simple soakaway model (Roldin et al. 2012) showed similar results for homogenous soils but indicated that exclusion of small scale soil physical features may greatly underestimate hydraulic performance of infiltration based SUDS.
Original languageEnglish
JournalUrban Water Journal
Volume14
Issue number2
Pages (from-to)125-133
Number of pages9
ISSN1573-062X
DOIs
Publication statusPublished - 2017

Keywords

  • Infiltration
  • Stormwater modelling
  • SUDS

Cite this

Bockhorn, B., Klint, K. E. S., Locatelli, L., Park, Y., Binning, P. J., Sudicky, E., & Jensen, M. B. (2017). Factors affecting the hydraulic performance of infiltration based SUDS in clay. Urban Water Journal, 14(2), 125-133. https://doi.org/10.1080/1573062X.2015.1076860
Bockhorn, B. ; Klint, K.E.S. ; Locatelli, Luca ; Park, Y. ; Binning, Philip John ; Sudicky, E. ; Jensen, Marina Bergen. / Factors affecting the hydraulic performance of infiltration based SUDS in clay. In: Urban Water Journal. 2017 ; Vol. 14, No. 2. pp. 125-133.
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Bockhorn, B, Klint, KES, Locatelli, L, Park, Y, Binning, PJ, Sudicky, E & Jensen, MB 2017, 'Factors affecting the hydraulic performance of infiltration based SUDS in clay', Urban Water Journal, vol. 14, no. 2, pp. 125-133. https://doi.org/10.1080/1573062X.2015.1076860

Factors affecting the hydraulic performance of infiltration based SUDS in clay. / Bockhorn, B.; Klint, K.E.S.; Locatelli, Luca; Park, Y.; Binning, Philip John; Sudicky, E.; Jensen, Marina Bergen.

In: Urban Water Journal, Vol. 14, No. 2, 2017, p. 125-133.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - Factors affecting the hydraulic performance of infiltration based SUDS in clay

AU - Bockhorn, B.

AU - Klint, K.E.S.

AU - Locatelli, Luca

AU - Park, Y.

AU - Binning, Philip John

AU - Sudicky, E.

AU - Jensen, Marina Bergen

PY - 2017

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AB - The influence of small scale soil heterogeneity on the hydraulic performance of infiltration based SUDS was studied using field data from a clayey glacial till and groundwater simulations with the integrated surface water and groundwater model HydroGeoSphere. Simulations of homogeneous soil blocks with hydraulic properties ranging from sand to clay showed that infiltration capacities vary greatly for the different soil types observed in glacial till. The inclusion of heterogeneities dramatically increased infiltration volume by a factor of 22 for a soil with structural changes above and below the CaC03 boundary. Infiltration increased further by 8% if tectonic fractures were included and by another 61% if earthworm burrows were added. Comparison of HydroGeoSphere infiltration hydrographs with a simple soakaway model (Roldin et al. 2012) showed similar results for homogenous soils but indicated that exclusion of small scale soil physical features may greatly underestimate hydraulic performance of infiltration based SUDS.

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KW - Stormwater modelling

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