Quantifying volume reduction and peak flow mitigation for three bioretention cells in clay soils in northeast Ohio

Details

• Journal Title:
  Science of The Total Environment
• Personal Author:
  Winston, Ryan J. ; Dorsey, Jay D. ; Hunt, William F.
• NOAA Program & Office:
  NOS (National Ocean Service)
• Description:
  Green infrastructure aims to restore watershed hydrologic function by more closely mimicking pre-development groundwater recharge and evapotranspiration (ET). Bioretention has become a popular stormwater control due to its ability to reduce runoff volume through these pathways. Three bioretention cells constructed in low permeability soils in northeast Ohio were monitored for non-winter quantification of inflow, drainage, ET, and exfiltration. The inclusion of an internal water storage (IWS) zone allowed the three cells to reduce runoff by 59%, 42%, and 36% over the monitoring period, in spite of the tight underlying soils. The exfiltration rate and the IWS zone thickness were the primary determinants of volume reduction performance. Post-construction measured drawdown rates were higher than pre-construction soil vertical hydraulic conductivity tests in all cases, due to lateral exfiltration from the IWS zones and ET, which are not typically accounted for in pre-construction soil testing. The minimum rainfall depths required to produce outflow for the three cells were 5.5, 7.4, and 13.8 mm. During events with 1-year design rainfall intensities, peak flow reduction varied from 24 to 96%, with the best mitigation during events where peak rainfall rate occurred before the centroid of the rainfall volume, when adequate bowl storage was available to limit overflow.
• Keywords:
  Environmental Chemistry Environmental Engineering Pollution Waste Management And Disposal Waste Management And Disposal Waste Management And Disposal
• Source:
  Science of The Total Environment, 553, 83-95
• DOI:
  https://doi.org/10.1016/j.scitotenv.2016.02.081
• ISSN:
  0048-9697
• Format:
  PDF
• Publisher:
  Elsevier BV
• Document Type:
  Journal Article
• Funding:
  Grant no. NA09NOS4190153
• Rights Information:
  Accepted Manuscript
• Compliance:
  Library
• Main Document Checksum:
  urn:sha256:4d1352fbfacac0302334a9c2614c03551bb8de403d78a109d82d3da32b5843ce
• Download URL:
  https://repository.library.noaa.gov/view/noaa/57627/noaa_57627_DS1.pdf
• File Type:
  [PDF - 2.01 MB ]