Groundwater Recharge from Run-Off, Infiltration and Percolation

Seiler, Klaus-Peter; Gat, J.R.

doi:10.1007/978-1-4020-5306-1

Cited by 81 publications

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“…i f i f i f P i ≤ I a + I c P i > I a + I c and P t ≤ f c P i > I a + I c and P t > f c (1) where P t (LT −1 ) is the precipitation intensity during one-time step (t), P i (L) is the cumulative precipitation depth, and I c (L) is the canopy interception. I a (L), the soil storage deficit, represents the maximum precipitation depth that can fall without runoff, and is used as an initial condition to represent interception, depression storage, and soil moisture deficit (I a and I c are emptied between events).…”

Section: Hillslopes "Diffuse" Groundwater Rechargementioning

confidence: 99%

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Quantification of Groundwater Recharge from an Ephemeral Stream into a Mountainous Karst Aquifer

Dvory

Ronen

Livshitz

et al. 2018

Water

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Sustainable groundwater production from karst aquifers is primarily dictated by its recharge rate. Therefore, it is essential to accurately quantify annual groundwater recharge in order to limit overexploitation and to evaluate artificial methods for groundwater enrichment. Infiltration during erratic flood events in karst basins may substantially contribute to aquifer recharge. However, the complicated nature of karst systems, which are characterized in part by multiple springs, sinkholes, and losing/gaining streams, impede accurate quantification of the actual contribution of flood waters to groundwater recharge. In this study, we aim to quantify the proportion of groundwater recharge accrued during runoff events in a karst aquifer. The role of karst conduits on flash flood infiltration was examined during four flood and controlled runoff events in the Soreq creek near Jerusalem, Israel. We distinguished between direct infiltration, percolation through karst conduits, and diffuse infiltration-the latter of which is most affected by evapotranspiration. A water balance was calculated for the 2014/15 hydrological year using the Hydrologic Engineering Center-Hydrologic Modelling System (HEC-HMS). Simulations show that 6.8 to 19.2% of the annual recharge volume was added to the aquifer from infiltration of runoff losses along the creek through the karst system.

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Section: Hillslopes "Diffuse" Groundwater Rechargementioning

confidence: 99%

“…Therefore, in order to limit overexploitation, it is essential to accurately quantify groundwater recharge [1,2]. Infiltration during erratic floods in karstic basins may contribute substantial amounts to aquifer recharge [1,[3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Quantification of Groundwater Recharge from an Ephemeral Stream into a Mountainous Karst Aquifer

Dvory

Ronen

Livshitz

et al. 2018

Water

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“…Loessial soils are regarded by many as transmissive and rechargeable (Lin and Wei, 2006;Seiler and Gat, 2007;Aish, 2014). Nevertheless under some vegetation and climate conditions they might ''act as an impervious barrier to recharge" (Weinthal et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Infiltration in layered loessial deposits: Revised numerical simulations and recharge assessment

Dafny

Šimůnek

2016

Journal of Hydrology

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s u m m a r yThe objective of this study is to assess recharge rates and their timing under layered loessial deposits at the edge of arid zones. Particularly, this study is focused on the case of the coastal plain of Israel and Gaza. First, results of a large-scale field infiltration test were used to calibrate the van Genuchten parameters of hydraulic properties of the loessial sediments using HYDRUS (2D/3D). Second, optimized soil hydraulic parameters were used by HYDRUS-1D to simulate the water balance of the sandy-loess sediments during a 25-year period for three environmental conditions: bare soil, and soil with both sparse and dense natural vegetation.The best inverse parameter optimization run fitted the infiltration test data with the RMSE of 0.27 d (with respect to a moisture front arrival) and R 2 of 96%. The calibrated model indicates that hydraulic conductivities of the two soil horizons, namely sandy loam and sandy clay loam, are 81 cm/d and 17.5 cm/d, respectively. These values are significantly lower than those previously reported, based on numerical simulations, for the same site. HYDRUS-1D simulation of natural recharge under bare soil resulted in recharge estimates (to the aquifer) in the range of 21-93 mm/yr, with an average recharge of 63 mm/yr. Annual precipitation in the same period varied between 100 and 300 mm/yr, with an average of 185 mm/yr. For semi-stabilized dunes, with 26% of the soil surface covered by local shrub (Artemisia monosperma), the mean annual recharge was 28 mm. For the stabilized landscape, with as much as 50% vegetation coverage, it was only 2-3 mm/yr. In other words, loessial sediments can either be a source of significant recharge, or of no recharge at all, depending on the degree of vegetative cover. Additionally, the time lag between specific rainy seasons and corresponding recharge events at a depth of 22 m, increased from 2.5 to 5 years, and to about 20 years, respectively, with an increasing vegetative cover. For this reason, and also likely due to a great depth of loessial sediments, no correlation was found between annual recharge and annual precipitations of the same year or subsequent years. Similarly, no differences were found between summer and winter recharge fluxes. Instead, numerical simulations indicated continuous year-round recharge of the aquifer. We conclude that the layered subsurface acts as a short-term (annual) and long-term (multi-annual) buffer to smooth sudden precipitation/infiltration events. Vegetation conditions can help in predicting long-term recharge rates (as percentage of annual precipitation), which in turn need to be considered when assigning recharge characteristics in regional assessments and models.

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“…The latter was analyzed at the Geological Survey of Denmark and Greenland's (GEUS) laboratory, applying the technique described before. Tritium compositions are expressed in tritium units (TU) that corresponds to an abundance of 1 3 H per 10 18 1 H atoms [23]. 13 C compositions are reported as the per mil (‰) deviations with respect to the Pee Dee Belemnite standard (PDB).…”

Section: Data Sampling and Methodsmentioning

confidence: 99%

Groundwater Origins and Circulation Patterns Based on Isotopes in Challapampa Aquifer, Bolivia

Lopez

Barmen

Rosberg

2016

Water

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Aridity and seasonality of precipitation are characteristics of the highland region in Bolivia. Groundwater becomes an important and safe source of water when surficial bodies are intermittent and affected by natural and anthropogenic contamination. Decades of exploitation of the Challapampa aquifer, combined with lack of information required to understand the groundwater circulation, represent a challenge for reservoir management. This study analyzes isotopic compositions of deuterium and oxygen-18 in different stages in the hydrologic cycle to assess flow patterns in the aquifer, especially in the alluvial fan of River Paria, where records are more extensive in space and time. Interpretations are based on existing and new data. Some implications, such as the age of water, the evaporation effect in groundwater and some thermal intrusions are supported by stable isotopes, tritium, radiocarbon, and electrical conductivity records. New results confirm that modern precipitation over the mountains surrounding the study area is the most important origin of water for shallow aquifers until exploited depths, 100 m below surface. The origin of water in deeper depths, 400 m, seems related to infiltration at higher altitudes and longer residence times.

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Groundwater Recharge from Run-Off, Infiltration and Percolation

Cited by 81 publications

References 0 publications

Quantification of Groundwater Recharge from an Ephemeral Stream into a Mountainous Karst Aquifer

Quantification of Groundwater Recharge from an Ephemeral Stream into a Mountainous Karst Aquifer

Infiltration in layered loessial deposits: Revised numerical simulations and recharge assessment

Groundwater Origins and Circulation Patterns Based on Isotopes in Challapampa Aquifer, Bolivia

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