Analysis of the shallow groundwater flow system near Connetqout Brook, Long Island, New York

Prince, Keith R.; Reilly, Thomas E.; Franke, Oliver

doi:10.1016/0022-1694(89)90059-0

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…Many previous investigators have characterized the hydrology of shallow lakes and wetlands and the complex interaction with ground water (e.g., Winter 1983;Anderson and Cheng 1993;Siegel et al 1995;Winter 1999;Smith and Townley 2002), demonstrating the influence of local and regional hydrology and geology. Approaches to characterization include development of a water balance, hydrogeologic characterization and modeling, water chemistry characterization, and tracer studies (for example, Prince et al 1989;Krabbenhoft et al 1990aKrabbenhoft et al , 1990bGreen 1998;Hunt et al 1996Hunt et al , 1998Drexler et al 1999;Fraser et al 2001;McKenzie et al 2002;Constantz and Stonestrom 2003). Direct tracer studies in peat can be problematic due to low permeability and apparent dual porosity, resulting in slow travel times and causing the tracer to become trapped in immobile zones (Ours et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Heat as a Tracer to Estimate Dissolved Organic Carbon Flux from a Restored Wetland

Burow

Constantz²,

Fujii³

2005

Groundwater

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Heat was used as a natural tracer to characterize shallow ground water flow beneath a complex wetland system. Hydrogeologic data were combined with measured vertical temperature profiles to constrain a series of two-dimensional, transient simulations of ground water flow and heat transport using the model code SUTRA (Voss 1990). The measured seasonal temperature signal reached depths of 2.7 m beneath the pond. Hydraulic conductivity was varied in each of the layers in the model in a systematic manual calibration of the two-dimensional model to obtain the best fit to the measured temperature and hydraulic head. Results of a series of representative best-fit simulations represent a range in hydraulic conductivity values that had the best agreement between simulated and observed temperatures and that resulted in simulated pond seepage values within 1 order of magnitude of pond seepage estimated from the water budget. Resulting estimates of ground water discharge to an adjacent agricultural drainage ditch were used to estimate potential dissolved organic carbon (DOC) loads resulting from the restored wetland. Estimated DOC loads ranged from 45 to 1340 g C/(m2 year), which is higher than estimated DOC loads from surface water. In spite of the complexity in characterizing ground water flow in peat soils, using heat as a tracer provided a constrained estimate of subsurface flow from the pond to the agricultural drainage ditch.

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Section: Introductionmentioning

confidence: 99%

Heat as a Tracer to Estimate Dissolved Organic Carbon Flux from a Restored Wetland

Burow

Constantz²,

Fujii³

2005

Groundwater

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“…Precipitation infiltrating the Upper Glacial Aquifer recharges the Magothy Aquifer (Figure 3), which provides an estimated 90% of the drinking water to Nassau County (west) and 50% of the drinking water to Suffolk County (east) on Long Island. The Magothy Aquifer mostly consists of coarse to fine sand, resulting in moderate permeability, with localized areas of higher or lower permeability with the presence of gravel or silt and clay [18,19]. Glacial deposits are known for their heterogeneity, where the regional flow is separated into non-interacting, quasi-parallel systems, which result in spring-fed creeks that flow generally from south to north on the northern side of the glacial moraine (Figure 3).…”

Section: Upper Glacial Aquifermentioning

confidence: 99%

“…However, elevated [B] relative to the precipitation requires additional sources to the groundwater system to achieve the concentrations observed. showing the relationship between the Upper Glacial Aquifer and the regional aquifer system from Prince et al [19]. Setauket Pond can be represented as one of the streams with local spring input.…”

Section: Upper Glacial Aquifermentioning

confidence: 99%

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Boron Isotopes in Fresh Surface Waters in a Temperate Coastal Setting

Peritore,

Rasbury,

Wooton

et al. 2023

Hydrology

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The results from a four-year study of a freshwater pond on Long Island, NY, USA, do not point to a single source of boron (and by proxy other elements including nutrients) in this system. However, boron data from samples associated with this pond can be explained by mixing between average precipitation (weighted average δ11B = 22.7) in the area and the local sources of boron, both natural and anthropogenic. This multiyear study provided the opportunity to see both yearly and seasonal differences. One algae sample from the pond showed significant fractionation and enrichment in light boron relative to the water and suggests algae may act as a boron sink. This type of biological fractionation could explain an observed down-gradient trend to heavier boron isotope values in pond water, which corresponds to the slight reduction in boron concentration seen in 2021. However, the trend was subdued in the following year, likely due to differences in the water flow rates and/or rate of algal growth. An opposite trend was seen with depth in the water, where δ11B showed a positive correlation to boron concentration, which increased with depth from the surface of the pond. This gradient may be explained by the stratification of the pond with a heavy source concentrating in the bottom waters. The bottom water composition was consistent with goose feces (δ11B = 25.8) or the addition of chemicals from the application of rock salt to local roads in winter. Surprisingly, boron from seawater (average δ11B = 39.8) did not appear to have a direct impact on Setauket Pond, other than its influence on precipitation, providing heavy δ11B and very low boron concentrations.

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Recent advances in understanding the interaction of groundwater and surface water

Winter¹

1995

Reviews of Geophysics

141

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The most common image of the interaction of groundwater and surface water is that of the interaction of streams with a contiguous alluvial aquifer. This type of system has been the focus of study for more than 100 years, from the work of Boussinesq (1877) to the present, and stream‐aquifer interaction continues to be the most common topic of papers discussing the interaction of groundwater and surface water. However, groundwater and surface water interact in a wide variety of landscapes from alpine to coastal. Within these landscapes, ground‐water systems range in scale from local to regional, and the types of surface water include streams, lakes, wetlands, and oceans. Given the broad spectrum of the topic of groundwater and surface water interaction, an overview of studies of this topic could be organized according to surface water type, landscape type, scale of hydrologic systems, or field and analytical methods. All these factors are discussed, but this paper is organized according to landscape type because of the great increase in studies of the interaction of groundwater and surface water in landscapes other than riverine systems in the last 15 years. Furthermore, discussing studies by landscape type facilitates comparison of methods and results from different geologic and climatic settings. The general landscapes discussed are mountain terrane, riverine systems, coastal terrane, hummocky terrane, and karst terrane.

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Analysis of the shallow groundwater flow system near Connetqout Brook, Long Island, New York

Cited by 6 publications

References 8 publications

Heat as a Tracer to Estimate Dissolved Organic Carbon Flux from a Restored Wetland

Heat as a Tracer to Estimate Dissolved Organic Carbon Flux from a Restored Wetland

Boron Isotopes in Fresh Surface Waters in a Temperate Coastal Setting

Recent advances in understanding the interaction of groundwater and surface water

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