Groundwater Mound due to Constant Recharge from a Strip Basin

Önder, Halil; Korkmaz, Serdar

doi:10.1061/(asce)1084-0699(2007)12:3(237)

Cited by 6 publications

(6 citation statements)

References 15 publications

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“…Hydrological theory suggests that infiltration into high permeability sediments overlying a water table (Figures 20 and 21), results in the mounding of the underlying water table (Figure 22) [56][57][58][59][60][61][62][63]. The mounding results from the accretion of the descending infiltrating water body (Figures 20 and 21) onto the surface of the water table (Figure 22), prior to its eventual absorption into the underlying water body [45].…”

Section: Comparison Of Observed Results With a Traditional Groundwatementioning

confidence: 99%

“…The mounding results from the accretion of the descending infiltrating water body (Figures 20 and 21) onto the surface of the water table (Figure 22), prior to its eventual absorption into the underlying water body [45]. The shape and height of this type of mound is a function of the shape of the recharge area, recharge rate, intrinsic permeability (or hydraulic conductivity) of the sediment and the thickness of the aquifer [45,[56][57][58][59][60][61][62][63]. The infiltrating water body ( Figure 20) will only extend to the water table during recharge, if the recharge interval is of sufficiently long duration.…”

Section: Comparison Of Observed Results With a Traditional Groundwatementioning

confidence: 99%

“…The infiltrating water body ( Figure 20) will only extend to the water table during recharge, if the recharge interval is of sufficiently long duration. An extensive set of mathematical models have been developed (e.g., [58,61,62,64]) to allow these groundwater mounds to be determined under conditions of constant recharge or variable recharge. These groundwater mound models apply to a variety of infiltration environments, including disposal of storm water (e.g., [65]) and the analysis of mires [66].…”

Section: Comparison Of Observed Results With a Traditional Groundwatementioning

confidence: 99%

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Formation and Control of Self-Sealing High Permeability Groundwater Mounds in Impermeable Sediment: Implications for SUDS and Sustainable Pressure Mound Management

Antia¹

2009

Sustainability

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A groundwater mound (or pressure mound) is defined as a volume of fluid dominated by viscous flow contained within a sediment volume where the dominant fluid flow is by Knudsen Diffusion. High permeability self-sealing groundwater mounds can be created as part of a sustainable urban drainage scheme (SUDS) using infiltration devices. This study considers how they form, and models their expansion and growth as a function of infiltration device recharge. The mounds grow through lateral macropore propagation within a Dupuit envelope. Excess pressure relief is through propagating vertical surge shafts. These surge shafts can, when they intersect the ground surface result, in high volume overland flow. The study considers that the creation of self-sealing groundwater mounds in matrix supported (clayey) sediments (intrinsic permeability = 10 -8 to 10 -30 m 3 m -2 s -1 Pa -1 ) is a low cost, sustainable method which can be used to dispose of large volumes of storm runoff (<20→2,000 m 3 /24 hr storm/infiltration device) and raise groundwater levels.However, the inappropriate location of pressure mounds can result in repeated seepage and ephemeral spring formation associated with substantial volumes of uncontrolled overland flow. The flow rate and flood volume associated with each overland flow event may be substantially larger than the associated recharge to the pressure mound. In some instances, the volume discharged as overland flow in a few hours may exceed the total storm water recharge to the groundwater mound over the previous three weeks. Macropore modeling is used within the context of a pressure mound poro-elastic fluid expulsion model in order to analyze this phenomena and determine (i) how this phenomena can be used to extract large volumes of stored filtered storm water (at high flow rates) from within a self-sealing high permeability pressure mound and (ii) how self-sealing pressure mounds (created using storm OPEN ACCESSSustainability 2009, 1 856 water infiltration) can be used to provide a sustainable low cost source of treated water for agricultural, drinking, and other water abstraction purposes.

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Section: Comparison Of Observed Results With a Traditional Groundwatementioning

confidence: 99%

Section: Comparison Of Observed Results With a Traditional Groundwatementioning

confidence: 99%

Section: Comparison Of Observed Results With a Traditional Groundwatementioning

confidence: 99%

See 1 more Smart Citation

Formation and Control of Self-Sealing High Permeability Groundwater Mounds in Impermeable Sediment: Implications for SUDS and Sustainable Pressure Mound Management

Antia¹

2009

Sustainability

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“…Subsurface water mounds may be temporary or permanent, depending on anthropogenic modifications, hydrologic conditions, or especially the hydraulic interaction of the high‐ and low‐permeability soil layers (Oostrom et al, 2013). Thus, the dynamic processes of mounding formation and dissipation underlying recharge basins are usually characterized by numerical modelling, which considers the saturated‐unsaturated interactions (Flint et al, 2012; Korkmaz, 2013; Onder & Korkmaz, 2007; Sumner et al, 1999). Vertical extension of the groundwater mound (also known as groundwater mounding height) has been the primary research point for model‐simulation studies since it has been proved to be highly sensitive with regard to the subsurface soil heterogeneity (Das et al, 2015; Nimmer et al, 2010) and to be a function of the temporally varying recharge from rectangular areas (Singh, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effect of multilayered groundwater mounds on water dynamics beneath a recharge basin: Numerical simulation and assessment of surface injection

Sheng

Zhang

et al. 2021

Hydrological Processes

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Interactions between groundwater mounds caused by a geologic layer contrast affect the efficiency of managed aquifer recharge in arid areas. However, research has rarely examined the roles of groundwater mounding size variations on soil water dynamics in a stratified vadose zone in response to a sustained infiltration source.Numerical experiments were conducted on a two-dimensional vertical-section domain using HYDRUS software to simulate the behaviours of two adjacent (upper and lower) groundwater mounds underlying an infiltration basin subjected to clay loam and sandy alternately-layered soil profiles. The model successfully predicted the volume and extent of perched water and approximated vertical travel times during events generating downward fluxes from the surface injection. The response time of the mounding width (lateral extension) to the surface injection was delayed as compared to that of the mounding height (vertical extension), especially for the lower water mound. The mounding heights and widths show a strongly positive correlation with the infiltration rates of both high-and low-permeability layers where the injected water mounded, while the water storage amounts in the high-and lowpermeability layers were governed by the mounding height and width, respectively. Exploratory simulations were then employed to assess the dependence of groundwater mounding behaviours and recharge performances on surface injection strategies.Results suggest that, by reducing injection rate or shortening injection duration, the near-term fraction of the surface injection converted to deep recharge is likely to be increased due to the narrowed groundwater mounding size, which would be limited by the water-retarding effect of layer contrasts. This study has important implications for predicting and understanding multilayered groundwater mounding behaviours and associated water mass balance under the geologic stratification, and is expected to aid in optimizing the infiltration basin operation for aquifer recharge.

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“…They used MODFLOW (McDonald and Harbaugh 1988) to find a numerical solution and then compared the results with an analytical solution. Önder and Korkmaz (2007) presented a numerical study based on the transformation of the flow domain into complex potential plane using the inverse formulation method (Jeppson 1968) and compared the results with experiments and a one‐dimensional analytical solution.…”

Section: Introductionmentioning

confidence: 99%

Transient Solutions to Groundwater Mounding in Bounded and Unbounded Aquifers

Korkmaz¹

2012

Groundwater

Self Cite

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In this study, the well-known Hantush solution procedure for groundwater mounding under infinitely long infiltration strips is extended to finite and semi-infinite aquifer cases. Initially, the solution for infinite aquifers is presented and compared to those available in literature and to the numerical results of MODFLOW. For the finite aquifer case, the method of images, which is commonly used in well hydraulics, is used to be able to represent the constant-head boundaries at both sides. It is shown that a finite number of images is enough to obtain the results and sustain the steady state. The effect of parameters on the growth of the mound and on the time required to reach the steady state is investigated. The semi-infinite aquifer case is emphasized because the growth of the mound is not symmetric. As the constant-head boundary limits the growth, the unbounded side grows continuously. For this reason, the groundwater divide shifts toward the unbounded side. An iterative solution procedure is proposed. To perform the necessary computations a code was written in Visual Basic of which the algorithm is presented. The proposed methodology has a wide range of applicability and this is demonstrated using two practical examples. The first one is mounding under a stormwater dispersion trench in an infinite aquifer and the other is infiltration from a flood control channel into a semi-infinite aquifer. Results fit very well with those of MODFLOW.

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Groundwater Mound due to Constant Recharge from a Strip Basin

Cited by 6 publications

References 15 publications

Formation and Control of Self-Sealing High Permeability Groundwater Mounds in Impermeable Sediment: Implications for SUDS and Sustainable Pressure Mound Management

Formation and Control of Self-Sealing High Permeability Groundwater Mounds in Impermeable Sediment: Implications for SUDS and Sustainable Pressure Mound Management

Effect of multilayered groundwater mounds on water dynamics beneath a recharge basin: Numerical simulation and assessment of surface injection

Transient Solutions to Groundwater Mounding in Bounded and Unbounded Aquifers

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