Pennsylvania Water Science Center

Publications

Publications are the cornerstone of the Pennsylvania Water Science Center’s dissemination of scientific data and conclusions. You can access USGS publications and journal articles here. To access the full, searchable catalog of USGS publications, please visit the USGS Publications Warehouse.

 

Publications Warehouse

Filter Total Items: 872
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Year Published: 2021

Geophysical and video logs of selected wells at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylvania, 2017-19

The U.S. Geological Survey (USGS) collected borehole geophysical and video logs in 17 open-hole wells in Northampton, Warminster, and Warwick Townships, Bucks County, Pennsylvania during 2017–19 to support detailed groundwater investigations at and near the former Naval Air Warfare Center (NAWC) Warminster, where groundwater contamination with per...

Senior, Lisa A.; Anderson, J. Alton; Bird, Philip H.
Senior, L.A., Anderson, J.A., and Bird, P.H., 2021, Geophysical and video logs of selected wells at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylvania, 2017–19: U.S. Geological Survey Open-File Report 2021–1025, 92 p., https://doi.org/10.3133/ofr20211025.

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Year Published: 2021

Machine-learning predictions of high arsenic and high manganese at drinking water depths of the glacial aquifer system, northern continental United States

Globally, over 200 million people are chronically exposed to arsenic (As) and/or manganese (Mn) from drinking water. We used machine-learning (ML) boosted regression tree (BRT) models to predict high As (>10 μg/L) and Mn (>300 μg/L) in groundwater from the glacial aquifer system (GLAC), which spans 25 states in the northern United States and...

Erickson, Melinda L.; Elliott, Sarah M.; Brown, Craig J.; Stackelberg, Paul; Ransom, Katherine Marie; Reddy, James E.; Cravotta, Charles A.

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Year Published: 2021

Evaluating low flow patterns, drivers and trends in the Delaware River Basin

In the humid, temperate Delaware River Basin (DRB) where water availability is generally reliable, summer low flows can cause competition between various human and ecological water uses. As temperatures continue to rise, population increases and development expands, it is critical to understand historical low flow variability to anticipate and...

Hammond, John; Fleming, Brandon J.

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Year Published: 2021

Environmental and anthropogenic drivers of contaminants in agricultural watersheds with implications for land management

If not managed properly, modern agricultural practices can alter surface and groundwater quality and drinking water resources resulting in potential negative effects on aquatic and terrestrial ecosystems. Exposure to agriculturally derived contaminant mixtures has the potential to alter habitat quality and negatively affect fish and other aquatic...

Smalling, Kelly; Devereux, Olivia H.; Gordon, Stephanie; Phillips, Patrick J.; Blazer, Vicki S.; Hladik, Michelle; Kolpin, Dana W.; Meyer, Michael T.; Sperry, Adam; Wagner, Tyler

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Year Published: 2021

Modeling estrogenic activity in streams throughout the Potomac and Chesapeake Bay watersheds

Endocrine-disrupting compounds (EDCs), specifically estrogenic endocrine-disrupting compounds, vary in concentration and composition in surface waters under the influence of different landscape sources and landcover gradients. Estrogenic activity in surface waters may lead to adverse effects in aquatic species at both individual and population...

Gordon, Stephanie; Jones, Daniel K.; Blazer, Vicki S.; Iwanowicz, Luke R.; Williams, Brianna; Smalling, Kelly

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Year Published: 2021

Nutrient trends and drivers in the Chesapeake Bay Watershed

The Chesapeake Bay Program maintains an extensive nontidal monitoring network, measuring nitrogen and phosphorus (nutrients) at more than 100 locations on rivers and streams in the watershed. Data from these locations are used by United States Geological Survey to assess the ecosystem’s response to nutrient-reduction efforts. This fact sheet...

Hyer, Kenneth E.; Phillips, Scott W.; Ator, Scott W.; Moyer, Douglas L.; Webber, James S.; Felver, Rachel; Keisman, Jennifer L.; McDonnell, Lee A.; Murphy, Rebecca; Trentacoste, Emily M.; Zhang, Qian; Dennison, William C.; Swanson, Sky; Walsh, Brianne; Hawkey, Jane; Taillie, Dylan
Hyer, K.E., Phillips, S.W., Ator, S.W., Moyer, D.L., Webber, J.S., Felver, R., Keisman, J.L., McDonnell, L.A., Murphy, R., Trentacoste, E.M., Zhang, Q., Dennison, W.C., Swanson, S., Walsh, B., Hawkey, J., and Taillie, D., 2021, Nutrient trends and drivers in the Chesapeake Bay Watershed: U.S. Geological Survey Fact Sheet 2020–3069, 4 p., https://doi.org/10.3133/fs20203069.

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Year Published: 2021

Microplastics in the Delaware River, northeastern United States

Microplastics are a contaminant of increasing concern in aquatic environments. Our understanding of microplastics in freshwater environments has increased dramatically over the past decade, but we still lack information on microplastic occurrence and biological uptake in National Park Service (NPS) waters. During 2015–19, the U.S. Geological...

Baldwin, Austin K.; Spanjer, Andrew R.; Hayhurst, Brett; Hamilton, Donald
Baldwin, A.K., Spanjer, A.R., Hayhurst, B., and Hamilton, D., 2021, Microplastics in the Delaware River, northeastern United States: U.S. Geological Survey Fact Sheet 2020-3071, 4 p., https://doi.org/10.3133/fs20203071.

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Year Published: 2021

Widespread use of the nitrification inhibitor nitrapyrin: Assessing benefits and costs to agriculture, ecosystems, and environmental health

Agricultural production and associated applications of nitrogen (N) fertilizers have increased dramatically in the last century, and current projections to 2050 show that demands will continue to increase as the human population grows. Applied in both organic and inorganic fertilizer forms, N is an essential nutrient in crop productivity....

Woodward, Emily; Edwards, Thea Margaret; Givens, Carrie E; Kolpin, Dana W.; Hladik, Michelle

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Year Published: 2021

Lithium in groundwater used for drinking-water supply in the United States

Lithium concentrations in untreated groundwater from 1464 public-supply wells and 1676 domestic-supply wells distributed across 33 principal aquifers in the United States were evaluated for spatial variations and possible explanatory factors. Concentrations nationwide ranged from <1 to 396 μg/L (median of 8.1) for public supply wells and...

Lindsey, Bruce D.; Belitz, Kenneth; Cravotta, Charles A.; Toccalino, Patricia; Dubrovsky, Neil M.

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Year Published: 2021

Interactive PHREEQ-N-AMDTreat water-quality modeling tools to evaluate performance and design of treatment systems for acid mine drainage

The PHREEQ-N-AMDTreat aqueous geochemical modeling tools described herein simulate changes in pH and solute concentrations resulting from passive and active treatment of acidic or alkaline mine drainage (AMD). The “user-friendly” interactive tools, which are publicly available software, utilize PHREEQC equilibrium aqueous and surface...

Cravotta, Charles A.

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Year Published: 2021

Spatial and temporal patterns of low streamflow and precipitation changes in the Chesapeake Bay Watershed

Spatial and temporal patterns in low streamflows were investigated for 183 streamgages located in the Chesapeake Bay Watershed for the period 1939–2013. Metrics that represent different aspects of the frequency and magnitude of low streamflows were examined for trends: (1) the annual time series of seven‐day average minimum streamflow, (2) the...

Fleming, Brandon J.; Archfield, Stacey A.; Hirsch, Robert M.; Kiang, Julie E.; Wolock, David M.

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Year Published: 2020

Arsenic and uranium occurrence in private wells in Connecticut, 2013–18—A spatially weighted and bedrock geology assessment

The U.S. Geological Survey, in cooperation with the Connecticut Department of Public Health, conducted a study to determine the presence of arsenic and uranium in private drinking water wells in Connecticut. Samples were collected during 2013–18 from wells completed in 115 geologic units, with 2,433 samples analyzed for arsenic and 2,191 samples...

Gross, Eliza L.; Brown, Craig J.
Gross, E.L., and Brown, C.J., 2020, Arsenic and uranium occurrence in private wells in Connecticut, 2013–18—a spatially weighted and bedrock geology assessment: U.S. Geological Survey Open-File Report 2020–1111 (ver. 1.1, November 2020), 13 p., https://doi.org/10.3133/ofr20201111.