Surface water–groundwater interactions in an alluvial plain: Chemical and isotopic systematics

Négrel, Ph.; Petelet‐Giraud, Emmanuelle; Barbier, Jean; Gautier, Emmanuèle

doi:10.1016/s0022-1694(03)00125-2

Cited by 123 publications

(67 citation statements)

References 33 publications

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“…Geochemical tracers including major ions, stable isotopes and radiogenic isotopes have been used to estimate groundwater fluxes in gaining rivers (Cartwright et al, 2008(Cartwright et al, , 2010Cook, 2012;Cook et al, 2003Cook et al, , 2006Durand et al, 1993;Genereux et al, 1993;Genereux and Hemond, 1990;Lamontagne et al, 2005Lamontagne et al, , 2008Lamontagne and Cook, 2007;Mullinger et al, 2007Mullinger et al, , 2009Négrel et al, 2003;Rhode, 1981;Ribolzi et al, 2000;Stellato et al, 2008). The utility of each of these tracers depends on a variety of factors including the difference between the concentration of the tracer in groundwater compared to surface water, its spatial and temporal variability, the accurate characterisation of its sources and sinks, and the potential for it to change by processes such as evaporation, precipitation, radioactive decay, degassing, or biogeochemical reactions.…”

Section: N P Unland Et Al: Investigating the Spatio-temporal Variamentioning

confidence: 99%

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Investigating the spatio-temporal variability in groundwater and surface water interactions: a multi-technique approach

Unland

Cartwright

Andersen

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. The interaction between groundwater and surface water along the Tambo and Nicholson rivers, southeast Australia, was investigated using 222 Rn, Cl, differential flow gauging, head gradients, electrical conductivity (EC) and temperature profiles. Head gradients, temperature profiles, Cl concentrations and 222 Rn activities all indicate higher groundwater fluxes to the Tambo River in areas of increased topographic variation where the potential to form large groundwater-surface water gradients is greater. Groundwater discharge to the Tambo River calculated by Cl mass balance was significantly lower (1.48 × 10 4 to 1.41 × 10 3 m 3 day −1 ) than discharge estimated by 222 Rn mass balance (5.35 × 10 5 to 9.56 × 10 3 m 3 day −1 ) and differential flow gauging (5.41 × 10 5 to 6.30 × 10 3 m 3 day −1 ) due to bank return waters. While groundwater sampling from the bank of the Tambo River was intended to account for changes in groundwater chemistry associated with bank infiltration, variations in bank infiltration between sample sites remain unaccounted for, limiting the use of Cl as an effective tracer. Groundwater discharge to both the Tambo and Nicholson rivers was the highest under high-flow conditions in the days to weeks following significant rainfall, indicating that the rivers are well connected to a groundwater system that is responsive to rainfall. Groundwater constituted the lowest proportion of river discharge during times of increased rainfall that followed dry periods, while groundwater constituted the highest proportion of river discharge under baseflow conditions (21.4 % of the Tambo in April 2010 and 18.9 % of the Nicholson in September 2010).

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Section: N P Unland Et Al: Investigating the Spatio-temporal Variamentioning

confidence: 99%

“…As such, gas transfer rates (k) were estimated using the O' Connor and Dobbins (1958) and Negulescu and Rojanski (1969) gas transfer models as modified by Genereux and Hemond (1992) and Mullinger et al (2007):…”

Section: Mass Balance Calculationsmentioning

confidence: 99%

Investigating the spatio-temporal variability in groundwater and surface water interactions: a multi-technique approach

Unland

Cartwright

Andersen

et al. 2013

Hydrol. Earth Syst. Sci.

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“…Variations in the isotope composition of water are caused by natural variations in the isotopic composition of rainfall [23], mixing with different waters [24] and evaporation [25]. Summary data of δ 2 H and δ 18 O values for the investigated surface and ground waters are presented in Table 1.…”

Section: Stable Isotopes Of Hydrogen and Oxygenmentioning

confidence: 99%

Recharge and Groundwater Quality of an Alluvial Aquifer: Case of the City of N’djamena (Chad)

Kadjangaba¹,

Huneau²,

Travi³

et al. 2017

JESE-B

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Isotopic tracers and water quality indicators (TDS (Total Dissolved Solid), Cl -and NO 3 -contents) were used to characterize the recharge and control of the quality of groundwater in the alluvial aquifer beneath of the N'djamena city. For this study, a total of 92 waters samples were taken and this included 67 wells, 21 pumps and 4 surface waters. Some groundwater has δ 18 O and δ 2 H values close to those of the city of N'djamena and/or the Chari river rains. However, all sampled points are below the Global Meteoric Water Line reflecting their evaporated characters. The interpretation of the isotopic tracers highlights that the recharge of the analyzed ground waters may result from two major mechanisms: (1) direct infiltration of local precipitation; (2) lateral inflow of river waters. The upper aquifer is the most vulnerable to pollution, especially during the recharge period. This pollution is due to the leaching of soils during the rainy season and the rise of the groundwater level which accompanies the overflowing of the Chari and causes the leaching of the polluted horizons of the unsaturated zone. In contrast, the lower aquifer has acceptable concentrations of solutes.

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“…Extensive irrigation without adequate drainage has caused rising groundwater levels and disturbed the preexisting water-salt balance in the soil zone and in the shallow aquifer. Alternatively, coastal wetland plays a significant role in the equilibrium of regional ecosystems, and modifications in groundwater flow regimes that can lead to increased salinization of wetlands when groundwater contains more salt than surface water (Négrel et al 2003). It is thus necessary to discuss how to control the dynamics of rising groundwater levels and salinity, and to identify the origin of salts for both water management and remediation in this salinized and water-deficient region.…”

Section: Introductionmentioning

confidence: 99%

Geochemical and isotopic evidence of shallow groundwater salinization in a reclaimed coastal zone: the Yellow River Delta, China

Liu

et al. 2016

Environ Earth Sci

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This paper aims to improve the current knowledge of groundwater salinization processes of a young coastal aquifer in the Yellow River Delta (YRD) and to assess the impact of both the transfer of irrigation water from the Yellow River and seawater intrusion, using a combination of hydrochemical-isotopic measurements. The major ion/Cl -ratios generally closely follow the mixing line between freshwater end-member (the Yellow River) and saline water end-members (salt groundwater or seawater), indicating the importance of mixing under natural and anthropogenic influences. The examination of stable isotope in groundwater (ranging from -9.0 to -3.5 % for d18 O and from -73 to -29 % for dD, respectively) and chloride concentrations (*2 to 629 meq/ L) confirms that the saline end-member is associated with saltwater rather than present seawater, and most groundwater samples are plotted on mixing lines between the Yellow River and saltwater. The similar range in stable isotopes (d 18 O and dD) and Cl -compositions between saltwater and confined aquifer supports the hypothesis that upward seepage of confined saline water intruded the shallow aquifer. Moreover, the deviations in some cases from mixing line imply water-rock interaction is also important in dominant control on groundwater chemistry, such as cation exchange, SO 4 2-reduction, and NaCl solution. The brackish water was characterized by slight excess of Na ? and deficit of Ca 2? compared to nonreactive mixing line. This indicates that the coastal aquifer is generally freshening with respect to extensive irrigation network, as well as the transfer from the Yellow River for ecological recharge into wetland.

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Surface water–groundwater interactions in an alluvial plain: Chemical and isotopic systematics

Cited by 123 publications

References 33 publications

Investigating the spatio-temporal variability in groundwater and surface water interactions: a multi-technique approach

Investigating the spatio-temporal variability in groundwater and surface water interactions: a multi-technique approach

Recharge and Groundwater Quality of an Alluvial Aquifer: Case of the City of N’djamena (Chad)

Geochemical and isotopic evidence of shallow groundwater salinization in a reclaimed coastal zone: the Yellow River Delta, China

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