Water-table and potentiometric-surface altitudes in the Upper Glacial, Magothy, and Lloyd aquifers of Long Island, New York, April-May 2013

Como, Michael D.; Noll, Michael L.; Finkelstein, Jason S.; Monti, Jack; Busciolano, R.

doi:10.3133/sim3326

Cited by 3 publications

(1 citation statement)

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“…The Setauket Pond occupies a low-elevation area that is separated from Conscience Bay of the LIS by a dam. It is one of many man-made, spring-fed ponds on the northern shore of Long Island that have a water table near the surface [21]. The spring-sourced water originates near Detmer Farm and is transported via Setauket Creek to Setauket Pond (Figure 4).…”

Section: Setauket Pond Natural Laboratorymentioning

confidence: 99%

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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Section: Setauket Pond Natural Laboratorymentioning

confidence: 99%