Variably Saturated Flow in Storm-Water Partial Exfiltration Trench

Li, Yanbo; Buchberger, Steven G.; Sansalone, John J.

doi:10.1061/(asce)0733-9372(1999)125:6(556)

Cited by 46 publications

(23 citation statements)

References 14 publications

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“…Rainfall was recorded in increments of 0.254 mm using a tipping bucket gauge. The water quality data at every 2 min interval were collected during rainfall-runoff events at the experimental site and samples were analyzed for dissolved and particulate bound metals for several rainfall-runoff events (Li et al, 1999;Sansalone and Buchberger, 1997;Sansalone et al, 1998).…”

Section: Cincinnati Watershedmentioning

confidence: 99%

SCS-CN-based modeling of sediment yield

Mishra

Tyagi

Singh

et al. 2006

Journal of Hydrology

139

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Section: Cincinnati Watershedmentioning

confidence: 99%

SCS-CN-based modeling of sediment yield

Mishra

Tyagi

Singh

et al. 2006

Journal of Hydrology

139

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“…The physical process of the present metal transport on the paved surface is explained in what follows. The heavy vehicular traffic (of the order of 150 000 vehicles per day) on the Mill Creek-Expressway of I-75 under study leaves behind the above-described metals (Sansalone and Buchberger, 1997;Sansalone et al, 1998;Li et al, 1999). These metals are deposited on the road surface as finely abraded particulate metals and the metal layer so formed represents the layer of the highest mass concentration.…”

Section: Development Of Looped Mass Rating Curvesmentioning

confidence: 98%

“…The variables in Equations (33) and (34) are distinguished from the above in the sense that these represent the total mass, the rainfall, or the runoff of the complete storm event, rather than their temporal distributions during a storm. The values of M p were computed for all events utilizing the data reported by Sansalone and Buchberger (1997), Sansalone et al (1998), andLi et al (1999). Their variation with the antecedent dry period (ADP) is shown in Figures 12-14 for dissolved, particulate-bound, and (dissolved C particulate-bound) metals respectively for the event of 8 August 1996.…”

Section: Determination Of Potential Mass Depth Of Flowmentioning

confidence: 99%

“…The average winter and summer temperatures are 0°C and 23Ð4°C respectively. The water quality data at every 2 min interval were collected during rainfall-runoff events at the experimental site and samples were analysed for dissolved and particulate-bound metals for the rainfall-runoff events of 17 June, 7 July, and 8 August 1996 (Sansalone and Buchberger, 1997;Sansalone et al, 1998;Li et al, 1999). An example set of hydrologic and water quality data for the event of 8 August 1996 is shown in Table II with the linearly interpolated values of water quality data.…”

Section: Study Areamentioning

confidence: 99%

“…Urban highway storm water often contains elevated levels of heavy metals and particles (Sansalone and Buchberger, 1997;Sansalone et al, 1998;Li et al, 1999). Heavy metals, like Pb, Cd, Cu, Ni, Zn, and Cr, can pose acute and chronic threats to receiving water bodies and soils.…”

Section: Introductionmentioning

confidence: 99%

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Hysteresis‐based analysis of overland metal transport

Mishra

Sansalone

Singh

2003

Hydrological Processes

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Abstract:Introducing a concept of equivalent mass depth of flow, this study describes the phenomenon of non-point source pollutant (metal) transport for pavement (or overland) flow in analogy with wave propagation in wide open channels. Hysteretic and normal mass rating curves are developed for runoff rate and mass of 12 dissolved and particulate-bound metal elements (pollutants) using the rainfall-runoff and water quality data of the 15 ð 20 m 2 instrumented pavement in Cincinnati, USA. Normal mass rating curves developed for easy computation of pollutant load are found to be of a form similar to Manning's, which is valid for open channel flows. Based on the hysteresis analysis, wave types for dissolution and mixing of particulate-bound metals are identified. The analysis finds that the second-order partialdifferential equation normally used for metal transport does not have the efficacy to describe fully the strong non-linear phenomena such as is described for various metal elements by dynamic waves. In addition, the proportionality concept of the popular SCS-CN concept is extended for determining the potential maximum metal mass M p of all the 12 elements transported by a rain storm and related to the antecedent dry period (ADP). For the primary metal zinc element, M p is found to increase with the ADP and vice versa.

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Evaluating hydrologic performance of bioretention cells in shallow groundwater

Zhang

Chui

2017

Hydrological Processes

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Bioretention cells, which are generally effective in controlling surface runoff and recharging groundwater, have been widely adopted as low impact development practices. However, shallow groundwater has limited their implementation in some locations due to the potential problems of a reduction in surface runoff control, groundwater pollution, and continuous groundwater drainage through the underdrain. Many guidelines have established minimum requirements for the groundwater depth below bioretention cells, but they may not be optimized for certain environmental conditions and bioretention cell designs. This study made use of a variably saturated flow model to examine the hydrologic performance of a single bioretention cell in shallow groundwater with event‐based simulations, considering a wide range of initial groundwater depths, media and in situ soil types, surface runoff loads, and underdrain sizes. Performance indicators (e.g., runoff reduction, time for infiltrated water to reach the bioretention cell bottom and the groundwater table, and height and dissipation time of groundwater mound) were evaluated to examine the processes of runoff generation, the formation and dissipation of groundwater mounds, and the bioretention cell's performance in a shallow groundwater environment. The most influential factors were the initial groundwater depth, the hydraulic conductivity of the media soil, and the rainfall runoff load. With a deeper initial groundwater table, infiltrated water took longer to reach the bioretention cell bottom and groundwater table. Groundwater mounds, however, took longer to dissipate even though they were smaller. The groundwater quality can be better protected if relatively less‐permeable soil types (e.g., sandy loam) are used as the media, although it may compromise the performance in runoff quantity control. However, only very high surface runoff loads would cause concerns regarding a reduction in runoff quantity control and possible groundwater contamination due to the shallow groundwater. A distance of 1.5–3 m between the bioretention cell bottom and the groundwater table is generally sufficient. The results of this study could help to guide the planning and design of bioretention cells in areas of shallow groundwater.

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Variably Saturated Flow in Storm-Water Partial Exfiltration Trench

Cited by 46 publications

References 14 publications

SCS-CN-based modeling of sediment yield

SCS-CN-based modeling of sediment yield

Hysteresis‐based analysis of overland metal transport

Evaluating hydrologic performance of bioretention cells in shallow groundwater

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