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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: 960

The nonpoint source challenge: Obstacles and opportunities for meeting nutrient reduction goals in the Chesapeake Bay watershed The nonpoint source challenge: Obstacles and opportunities for meeting nutrient reduction goals in the Chesapeake Bay watershed

This document examines the Chesapeake Bay watershed response to nutrient and sediment reduction efforts under the Clean Water Act's total maximum daily load (TMDL) regulation. As the 2025 Chesapeake Bay TMDL deadline approaches, water quality goals remain unmet, primarily because of nonpoint source pollution, the largest remaining source of nutrients and sediment, and the primary...
Authors
Zachary M. Easton, Kurt Stephenson, Brian Benhem, J.K. Böhlke, Anthony R Buda, Amy S. Collick, Lara Fowler, Ellen Gilinsky, Andrew Miller, Gregory Noe, Leah Palm-Forster, Leonard Shabman, Tess Wynn-Thompson
By
Water Resources Mission Area, Florence Bascom Geoscience Center, Chesapeake Bay Activities, Pennsylvania Water Science Center

Municipal and industrial wastewater treatment plant effluent contributions to per- and polyfluoroalkyl substances in the Potomac River: A basin-scale measuring and modeling approach Municipal and industrial wastewater treatment plant effluent contributions to per- and polyfluoroalkyl substances in the Potomac River: A basin-scale measuring and modeling approach

Managing per- and polyfluoroalkyl substances (PFAS) in water resources requires a basin-scale approach. Predicted environmental concentrations (PEC) and stream-vulnerability scores for PFAS were determined for the Potomac River watershed in the eastern United States. Approximately 15% of stream reaches contained municipal and/or industrial wastewater treatment plant (WWTP) discharges...
Authors
Larry B. Barber, Samuel Adam Miller, Lee Blaney, Paul M. Bradley, Kaycee E. Faunce, Jacob Fleck, Malinda Frick, Ke He, Ryan D. Hollins, Conor J. Lewellyn, Emily Majcher, Mitchell A. McAdoo, Kelly Smalling
By
Water Resources Mission Area, Chesapeake Bay Activities, Pennsylvania Water Science Center, Virginia and West Virginia Water Science Center

A geospatial analysis of water-quality threats from orphan wells in principal and secondary aquifers of the United States A geospatial analysis of water-quality threats from orphan wells in principal and secondary aquifers of the United States

Throughout the history of oil and gas production in the United States, millions of wells have been drilled for exploration and energy production. Hundreds of thousands of unplugged wells are no longer actively producing and are currently under orphan status, with no responsible party obligated for plugging. Orphan wells can pose threats to water resources by providing pathways for...
Authors
Joshua C. Woda, Karl B. Haase, Nicholas J. Gianoutsos, Kalle Jahn, Kristina Marie Gutchess
By
New York Water Science Center, Pennsylvania Water Science Center

Tapwater exposures, residential risk, and mitigation in a PFAS-impacted-groundwater community Tapwater exposures, residential risk, and mitigation in a PFAS-impacted-groundwater community

Tapwater (TW) safety and sustainability are priorities in the United States. Per/polyfluoroalkyl substance(s) (PFAS) contamination is a growing public-health concern due to prolific use, widespread TW exposures, and mounting human-health concerns. Historically-rural, actively-urbanizing communities that rely on surficial-aquifer private wells incur elevated risks of unrecognized TW...
Authors
Paul M. Bradley, Kristin M. Romanok, Kelly Smalling, Lee Donahue, Mark P. Gaikowski, Randy K. Hines, Sara E. Breitmeyer, Stephanie Gordon, Keith Loftin, R. Blaine McCleskey, Shannon M. Meppelink, Molly L. Schreiner
By
Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC)

Time of travel of releases from Lake Wallenpaupack to the U.S. Geological Survey’s streamgage monitoring location on the Delaware River at Montague, New Jersey Time of travel of releases from Lake Wallenpaupack to the U.S. Geological Survey’s streamgage monitoring location on the Delaware River at Montague, New Jersey

In 2016, the U.S. Geological Survey (USGS) carried out a hydraulic study within the upper Delaware River Basin for the purpose of determining the time of travel for water releases from the Brookfield Renewable U.S. hydroelectric plant at Lake Wallenpaupack, Pennsylvania, to reach the USGS streamgage located on the Delaware River at Montague, New Jersey (site number 01438500). From...
Authors
Jaclynne Polcino, John J. Trainor, Jerilyn V. Collenburg
By
New Jersey Water Science Center, Pennsylvania Water Science Center

Consideration of grid cell size to represent stream network geometry for the conterminous United States Consideration of grid cell size to represent stream network geometry for the conterminous United States

No abstract available.
Authors
Brandon Fleming, Kenneth Belitz, Courtney D. Killian
By
Water Resources Mission Area, Pennsylvania Water Science Center

METRIC: An interactive framework for integrated visualization and analysis of monitored and expected load reductions for nitrogen, phosphorus, and sediment in the Chesapeake Bay watershed METRIC: An interactive framework for integrated visualization and analysis of monitored and expected load reductions for nitrogen, phosphorus, and sediment in the Chesapeake Bay watershed

Reductions of nitrogen, phosphorus, and sediment loads have been the focus of watershed restoration in many regions for improving water quality, including the Chesapeake Bay. Watershed models and riverine monitoring data can provide important information on the progress of load reductions but do not always generate consistent interpretations. A new framework for integrated visualization...
Authors
Qian Zhang, Gary W. Shenk, Gopal Bhatt, Isabella Bertani
By
Chesapeake Bay Activities, Pennsylvania Water Science Center, Virginia and West Virginia Water Science Center

Hydrologic investigations and a preliminary conceptual model of the groundwater system at North Penn Area 1 Superfund Site, Souderton, Montgomery County, Pennsylvania Hydrologic investigations and a preliminary conceptual model of the groundwater system at North Penn Area 1 Superfund Site, Souderton, Montgomery County, Pennsylvania

The U.S. Geological Survey (USGS) conducted hydrogeologic investigations, reviewed existing data, and developed a preliminary conceptual model of the groundwater system as part of technical support of the U.S. Environmental Protection Agency (EPA) at the North Penn Area 1 Superfund Site (hereafter, the NP1 Site) located within the Borough of Souderton in Montgomery County, Pennsylvania...
Authors
Lisa A. Senior, Dennis W. Risser, Daniel J. Goode, Philip H. Bird
By
Water Resources Mission Area, Pennsylvania Water Science Center

Predicted potential for aquatic exposure effects of per- and polyfluorinated alkyl substances (PFAS) in Pennsylvania’s statewide network of streams Predicted potential for aquatic exposure effects of per- and polyfluorinated alkyl substances (PFAS) in Pennsylvania’s statewide network of streams

Per- and polyfluoroalkyl substances (PFAS) are contaminants that can lead to adverse health effects in aquatic organisms, including reproductive toxicity and developmental abnormalities. To assess the ecological health risk of PFAS in Pennsylvania stream surface water, we conducted a comprehensive analysis that included both measured and predicted estimates. The potential combined...
Authors
Sara E. Breitmeyer, Amy Williams, Matthew D. Conlon, Timothy A. Wertz, Brian Heflin, Dustin Shull, Joseph W. Duris
By
Water Resources Mission Area, Pennsylvania Water Science Center

A multidisciplinary approach that considers occurrence, geochemistry, bioavailability, and toxicity to prioritize critical minerals for environmental research A multidisciplinary approach that considers occurrence, geochemistry, bioavailability, and toxicity to prioritize critical minerals for environmental research

Critical minerals (or critical elements) are minerals or elements that are essential to global security and development and have supply chains vulnerable to disruption. In general, knowledge of the environmental behavior and health effects of critical elements is needed to support the development of safe and environmentally responsible supplies. This knowledge includes identifying...
Authors
Sarah Jane White, Tyler Kane, Kate M. Campbell, Marie Noële Croteau, Michael G. Iacchetta, Johanna Blake, Charles A. Cravotta, Bethany K. Kunz, Charles N. Alpers, Jill Jenkins, Katherine Walton-Day
By
Environmental Health Program, Mineral Resources Program, California Water Science Center, Colorado Water Science Center, Columbia Environmental Research Center, Geology, Energy & Minerals Science Center, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Pennsylvania Water Science Center, Wetland and Aquatic Research Center

The state of the science and practice of stream restoration in the Chesapeake: Lessons learned to inform better implementation, assessment and outcomes The state of the science and practice of stream restoration in the Chesapeake: Lessons learned to inform better implementation, assessment and outcomes

The Chesapeake Bay Program’s (CBP) Science and Technical Advisory Committee (STAC) organized and led a workshop on the science and practice of stream restoration in order to summarize the state of knowledge in order to identify ways to improve stream restoration outcomes. The workshop identified a general framework for explaining the main factors leading to stream restoration outcomes...
Authors
Gregory Noe, Neely Law, Joel Berger, Solange Filoso, Sadie Drescher, L. Fraley-McNeal, Ben Hayes, Paul Mayer, Chris Ruck, Bill Stack, Rich Starr, Scott Stranko, Tess Thompson
By
Chesapeake Bay Activities, Florence Bascom Geoscience Center, Pennsylvania Water Science Center

Predictive understanding of stream salinization in a developed watershed using machine learning Predictive understanding of stream salinization in a developed watershed using machine learning

Stream salinization is a global issue, yet few models can provide reliable salinity estimates for unmonitored locations at the time scales required for ecological exposure assessments. Machine learning approaches are presented that use spatially limited high-frequency monitoring and spatially distributed discrete samples to estimate the daily stream-specific conductance across a...
Authors
Jared David Smith, Lauren Elizabeth Koenig, Margaux Jeanne Sleckman, Alison P. Appling, Jeffrey M Sadler, Vincent T. DePaul, Zoltan Szabo
By
Water Resources Mission Area, New Jersey Water Science Center, Oklahoma-Texas Water Science Center, Pennsylvania Water Science Center
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