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Publications

Nitrogen in the Chesapeake Bay Watershed - A Century of Change, 1950–2050

National Award for Superior Communication Product

News Event

Domestic Well Water Quality in Marcellus Shale Region

Factors Affecting Groundwater Quality Used for Domestic Supply in Marcellus Shale Region of North-Central and North-East Pennsylvania

Journal Article

Geohydrologic and water-quality characterization of a fractured-bedrock test hole in an area of Marcellus Shale gas development, Sullivan County, Pennsylvania

Report at Pennsylvania Geological Survey

Publications are the cornerstone of the Pennsylvania Water Science Center’s dissemination of scientific data and conclusions. 

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To access the full, searchable catalog of USGS publications, visit the USGS Publications Warehouse.

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Filter Total Items: 968

Real-time assessments of water quality—A nowcast for Escherichia coli and cyanobacterial toxins Real-time assessments of water quality—A nowcast for Escherichia coli and cyanobacterial toxins

Threats to our recreational and drinking waters include disease-causing (pathogenic) organisms from fecal contamination and toxins produced by some species of cyanobacteria (cyanotoxins) that can cause acute and (or) chronic illnesses. Because traditional laboratory methods for detecting these threats take too long for prompt public health protection, tools for real-time assessments are...
Authors
Donna S. Francy, Amie M.G. Brady, Tammy M. Zimmerman
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center, Pennsylvania Water Science Center, Ohio Water Microbiology Laboratory

Tritium as an indicator of modern, mixed, and premodern groundwater age Tritium as an indicator of modern, mixed, and premodern groundwater age

Categorical classification of groundwater age is often used for the assessment and understanding of groundwater resources. This report presents a tritium-based age classification system for the conterminous United States based on tritium (3H) thresholds that vary in space and time: modern (recharged in 1953 or later), if the measured value is larger than an upper threshold; premodern...
Authors
Bruce D. Lindsey, Bryant C. Jurgens, Kenneth Belitz
By
Water Resources Mission Area, Pennsylvania Water Science Center, California Water Science Center, New England Water Science Center

Drinking water quality in the glacial aquifer system, northern USA Drinking water quality in the glacial aquifer system, northern USA

Groundwater supplies 50% of drinking water worldwide, but compromised water quality from anthropogenic and geogenic contaminants can limit usage of groundwater as a drinking water source. Groundwater quality in the glacial aquifer system, USA (GLAC), is presented in the context of a hydrogeologic framework that divides the study area into 17 hydrogeologic terranes. Results are reported...
Authors
Melinda L. Erickson, Richard M. Yager, Leon J. Kauffman, John T. Wilson
By
Water Resources Mission Area, New Jersey Water Science Center, New York Water Science Center, Ohio-Kentucky-Indiana Water Science Center, Pennsylvania Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

Reduced soil macropores and forest cover reduce warm-season baseflow below ecological thresholds in the upper Delaware River Basin Reduced soil macropores and forest cover reduce warm-season baseflow below ecological thresholds in the upper Delaware River Basin

We examined the impacts of changes in land cover and soil conditions on the flow regime of the upper Delaware River Basin using the Water Availability Tool for Environmental Resources (WATER). We simulated flows for two periods, circa 1600 and 1940, at three sites using the same temperature and precipitation conditions: the East Branch (EB), West Branch (WB), and mainstem Delaware River...
Authors
Theodore A. Endreny, Peter Yong Seuk Kwon, Tanja N. Williamson, Richard Evans
By
Ohio-Kentucky-Indiana Water Science Center, Pennsylvania Water Science Center

Predictive analysis using chemical-gene interaction networks consistent with observed endocrine activity and mutagenicity of U.S. streams Predictive analysis using chemical-gene interaction networks consistent with observed endocrine activity and mutagenicity of U.S. streams

In a recent U.S. Geological Survey/U.S. Environmental Protection Agency study assessing >700 organic compounds in 38 streams, in vitro assays indicated generally low estrogen, androgen, and glucocorticoid receptor activities, but identified 13 surface waters with 17β estradiol equivalent (E2Eq) activities greater than the 1 ng/L level of concern for feminization of male fish. Among the...
Authors
Jason P. Berninger, David M. DeMarini, Sarah H. Warren, Jane Ellen Simmons, Vickie S. Wilson, Justin M. Conley, Mikayla D. Armstrong, Dana W. Kolpin, Kathryn Kuivila, Timothy J. Reilly, Kristin M. Romanok, Daniel L. Villeneuve, Paul M. Bradley, Luke R. Iwanowicz
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Columbia Environmental Research Center, Eastern Ecological Science Center, New Jersey Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC)

The presence of antibiotic resistance genes in coastal soil and sediment samples from the eastern seaboard of the USA The presence of antibiotic resistance genes in coastal soil and sediment samples from the eastern seaboard of the USA

Infections from antibiotic resistant microorganisms are considered to be one of the greatest global public health challenges that result in huge annual economic losses. While genes that impart resistance to antibiotics (AbR) existed long before the discovery and use of antibiotics, anthropogenic uses of antibiotics in agriculture, domesticated animals, and humans are known to influence...
Authors
Dale W. Griffin, William Benzel, Shawn C. Fisher, Michael J. Focazio, Luke R. Iwanowicz, Keith A. Loftin, Timothy J. Reilly, Daniel K. Jones
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Central Plains Water Science Center, Eastern Ecological Science Center, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center, New Jersey Water Science Center, New York Water Science Center, Pennsylvania Water Science Center, St. Petersburg Coastal and Marine Science Center, Utah Water Science Center

Hydrocarbons in upland groundwater, Marcellus Shale Region, Northeastern Pennsylvania and Southern New York, USA Hydrocarbons in upland groundwater, Marcellus Shale Region, Northeastern Pennsylvania and Southern New York, USA

Water samples from 50 domestic wells located 1 km (distal) from shale-gas wells in upland areas of the Marcellus Shale region were analyzed for chemical, isotopic, and groundwater-age tracers. Uplands were targeted because natural mixing with brine and hydrocarbons from deep formations is less common in those areas compared to valleys. CH4-isotope, predrill CH4-concentration, and other...
Authors
Peter B. McMahon, Bruce D. Lindsey, Matthew D. Conlon, Andrew G. Hunt, Kenneth Belitz, Bryant Jurgens, Brian A. Varela
By
Water Resources Mission Area, Energy Resources Program, National Water Quality Program, California Water Science Center, Central Energy Resources Science Center, Colorado Water Science Center, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center, New England Water Science Center, Pennsylvania Water Science Center

Toward explaining nitrogen and phosphorus trends in Chesapeake Bay tributaries, 1992-2012 Toward explaining nitrogen and phosphorus trends in Chesapeake Bay tributaries, 1992-2012

Understanding trends in stream chemistry is critical to watershed management, and often complicated by multiple contaminant sources and landscape conditions changing over varying time scales. We adapted spatially-referenced regression (SPARROW) to infer causes of recent nutrient trends in Chesapeake Bay tributaries by relating observed fluxes during 1992, 2002, and 2012 to contemporary...
Authors
Scott Ator, Ana M. Garcia, Gregory E. Schwarz, Joel D. Blomquist, Andrew J. Sekellick
By
Water Resources Mission Area, Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center, Pennsylvania Water Science Center

Remote sensing of river flow in Alaska—New technology to improve safety and expand coverage of USGS streamgaging Remote sensing of river flow in Alaska—New technology to improve safety and expand coverage of USGS streamgaging

The U.S. Geological Survey monitors water level (water surface elevation relative to an arbitrary datum) and measures streamflow in Alaska rivers to compute and compile river flow records for use by water resource planners, engineers, and land managers to design infrastructure, manage floodplains, and protect life, property, and aquatic resources. Alaska has over 800,000 miles of rivers...
Authors
Jeff Conaway, John R. Eggleston, Carl J. Legleiter, John Jones, Paul J. Kinzel, John W. Fulton
By
Water Resources Mission Area, Alaska Science Center, Virginia and West Virginia Water Science Center, Colorado Water Science Center, Pennsylvania Water Science Center

Kinetic study on clogging of a geothermal pumping well triggered by mixing-induced biogeochemical reactions Kinetic study on clogging of a geothermal pumping well triggered by mixing-induced biogeochemical reactions

The sustainability of ground-source geothermal systems can be severely impacted by microbially mediated clogging processes. Biofouling of water wells by hydrous ferric oxide is a widespread problem. Although the mechanisms and critical environmental factors associated with clogging development are widely recognized, effects of mixing processes within the wells and time scales for...
Authors
Luc Burte, Charles A. Cravotta, Lorine Bethencourt, Julien Farasin, Mathieu Pedrot, Alexis Dufresne, Marie-Francoise Gerard, Catherine Baranger, Tanguy Le Borgne, Luc Aquilina
By
Water Resources Mission Area, Pennsylvania Water Science Center

Drinking water health standards comparison and chemical analysis of groundwater for 72 domestic wells in Bradford County, Pennsylvania, 2016 Drinking water health standards comparison and chemical analysis of groundwater for 72 domestic wells in Bradford County, Pennsylvania, 2016

Pennsylvania has the second highest number of residential wells of any state in the Nation with approximately 2.4 million residents that depend on groundwater for their domestic water supply. Despite the widespread reliance on groundwater in rural areas of the state, publicly available data to characterize the quality of private well water are limited. In Bradford County, more than half...
Authors
John W. Clune, Charles A. Cravotta
By
Water Resources Mission Area, Chesapeake Bay Activities, Pennsylvania Water Science Center

Drought forecasting for streams and groundwaters in northeastern United States Drought forecasting for streams and groundwaters in northeastern United States

Background When rainfall is lower than normal over an extended period, streamflows decline, groundwater levels fall, and hydrological drought can occur. Droughts can reduce the water available for societal needs, such as public and private drinking-water supplies, farming, and industry, and for ecological health, such as maintenance of water quality and natural ecosystems. Recent...
Authors
Samuel H. Austin, Robert W. Dudley
By
Water Resources Mission Area, Maryland-Delaware-D.C. Water Science Center, New England Water Science Center, New Jersey Water Science Center, New York Water Science Center, Pennsylvania Water Science Center, Virginia and West Virginia Water Science Center
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