Determining the extent of groundwater interference on the performance of infiltration trenches

Locatelli, Luca; Mark, Ole; Mikkelsen, Peter Steen; Arnbjerg‐Nielsen, Karsten; Wong, Tony Hoong Fatt; Binning, Philip John

doi:10.1016/j.jhydrol.2015.08.047

Cited by 42 publications

(30 citation statements)

References 38 publications

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“…Approximately 60–100% of the rainfall runoff load infiltrated into the bioretention cell for loamy sand, but only 23–85% for sandy loam. Locatelli et al () obtained similar results (30–95%) for loamy sand, although their study focused on an infiltration trench instead of a bioretention cell. Soils of lower porosity and/or permeability, such as loamy and clayey soils, offer less porous space for water to infiltrate or transmit infiltrated water at a lower rate.…”

Section: Resultsmentioning

confidence: 78%

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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Section: Resultsmentioning

confidence: 78%

Evaluating hydrologic performance of bioretention cells in shallow groundwater

Zhang

Chui

2017

Hydrological Processes

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“…It is also assumed that the infiltration is not affected by the fluctuation in groundwater level beneath LID facilities. However, the infiltration capacity of LID facilities possibly decreases if LID is applied in areas with rising groundwater mounding [11]. Therefore, the model is likely to overestimate the groundwater recharge in areas with shallow groundwater under LID scenarios.…”

Section: Model Limitationsmentioning

confidence: 99%

“…The effects of LID on groundwater systems have been evaluated in many previous studies based on experimental observation or model simulation. Most of the studies focused on single LID facilities and investigated infiltration processes and groundwater mounding beneath the facility [10,11]. For example, based on groundwater monitoring beneath an experimental storm water infiltration basin, Machusick et al [12] reported that the extent of groundwater mounding was localized to the infiltration basin and over a limited distance.…”

Section: Introductionmentioning

confidence: 99%

Modeling the Spatial and Seasonal Variations of Groundwater Head in an Urbanized Area under Low Impact Development

Zheng

Chen

Qin

et al. 2018

Water

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Increasing impervious land cover has great impacts on groundwater regimes in urbanized areas. Low impact development (LID) is generally regarded as a sustainable solution for groundwater conservation. However, the effects of LID on the spatial-temporal distribution of groundwater are not yet fully understood. In this case study, a coupled Storm Water Management Model (SWMM) and Finite Element Subsurface FLOW system (FEFLOW) model was used to simulate surface and groundwater flow in an urbanized area in Shenzhen, China. After verification, the model was used to analyze the spatial-seasonal variations of groundwater head and hydrological processes under different LID scenarios. The results indicate that if the runoff from 7.5% and 15% of impervious area is treated by LID facilities, the annual surface runoff decreases by 5% and 9%, respectively, and the spatial average groundwater head relative to sea level pressure increases by 0.9 m and 1.7 m in the study area, respectively. The rise in groundwater head generally decreases from the recharge zones to the discharge zones surrounded by the streams and coastal waters. However, the groundwater head change is determined not only by the location in the catchment, but also by the hydraulic conductivity of underlying aquifer and LID infiltration intensity. Moreover, LID significantly enhances groundwater recharge and aquifer storage in the wet seasons; in turn it increases aquifer release and groundwater discharge in the dry seasons. However, LID has the potential to increase the risk of groundwater flooding during wet seasons in areas with poor aquifer drainage capacity and shallow groundwater depth. The findings from this study provide the basis for further assessing the benefit and risk of LID infiltration for groundwater supplementation in the urbanized areas.

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“…Particularly, the infiltrated water through LID is an important source of groundwater recharge, which is precious for areas of groundwater depletion (Newcomer, Gurdak, Sklar, & Nanus, ; Mooers, Jamieson, Hayward, Drage, & Lake, ). However, in areas of shallow groundwater, LID practices not only may form groundwater mounds locally (Endreny & Collins, ; Göbel et al, ; Ku, Hagelin, & Buxton, ; Locatelli et al, ; Machusick, Welker, & Traver, ; Stewart, Lee, Shuster, & Darner, ) but can also raise the regional groundwater table (Barron, Donn, & Barr, ; Bhaskar, Hogan, Nimmo, & Perkins, ; Kidmose, Troldborg, Refsgaard, & Bischoff, ; Locatelli et al, ; Zheng, Chen, Qin, & Jiao, ). As a result of water table rise, the infiltration capacity of the LID practices may then be reduced due to the more saturated soil nearby (Heilweil, Benoit, & Healy, ; Zhang & Chui, ).…”

Section: Introductionmentioning

confidence: 99%

Interactions between shallow groundwater and low‐impact development underdrain flow at different temporal scales

Zhang

Chui

2018

Hydrological Processes

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Low‐impact development (LID) practices are effective in managing surface run‐off, mitigating nonpoint source pollution, and recharging groundwater. However, they are often less effective in shallow groundwater environments as their surface infiltration and bottom exfiltration rates could be reduced, and the underdrains (i.e., underground drains within the media of the LID practices) may drain groundwater and alter groundwater dynamics. To evaluate and better understand the interactions between shallow groundwater and LID underdrain flow at different temporal scales, multiple statistical analyses were conducted on the monitored groundwater table depth and underdrain flow of porous pavements at the Central Kitsap Community Campus (Washington) and both porous pavements and bioretention cells at the IMAX parking lot (Ontario, Canada). The wavelet power, which represents oscillation behaviour and is obtained by continuous wavelet transform, of underdrain flow was a hybrid of that of rainfall and groundwater table depth. Rainfall variations at finer temporal scales (5 min to 10 days) resulted in finer scale underdrain flow, whereas groundwater fluctuations at coarser temporal scales (10 to 30 days) accounted for coarser scale underdrain flow and extended the duration of it. The impact of groundwater on underdrain flow was greater when the groundwater table was shallower than the underdrain (e.g., <0.6 m), particularly at finer temporal resolutions (5 min to 1 hr), which correspond to short‐term responses of LID practices and their corresponding effects on flooding. It was possible that the local groundwater mounds formed by infiltrated water instead of regional groundwater fluctuations that affected the underdrain flow in these conditions. Finally, through an evolutionary polynomial regression, two simple equations were obtained to predict the total amount and peak of LID underdrain flow using event‐based rainfall, groundwater table depth, and the hydraulic conductivity of media and in situ soils. The results may facilitate LID design and planning, and their implementation in shallow groundwater areas. The derived equations may benefit the real‐time control of LID‐related sewer and treatment systems in shallow groundwater urban catchments.

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Determining the extent of groundwater interference on the performance of infiltration trenches

Cited by 42 publications

References 38 publications

Evaluating hydrologic performance of bioretention cells in shallow groundwater

Evaluating hydrologic performance of bioretention cells in shallow groundwater

Modeling the Spatial and Seasonal Variations of Groundwater Head in an Urbanized Area under Low Impact Development

Interactions between shallow groundwater and low‐impact development underdrain flow at different temporal scales

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