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Pennsylvania Water Science Center

We work in cooperation with numerous federal, state, and local agencies to collect scientific data and conduct scientific studies of the source, quantity, quality, ecology, and use of Pennsylvania's water resources.

News

Drought Watch/Warning Declared for 35 Pennsylvania Counties

Drought Watch/Warning Declared for 35 Pennsylvania Counties

USGS Releases Geonarratives Documenting Monitoring Activities in Chester County, Pennsylvania

USGS Releases Geonarratives Documenting Monitoring Activities in Chester County, Pennsylvania

USGS Releases Geonarrative Documenting Results of Pesticide Sampling in Pennsylvania Groundwater

USGS Releases Geonarrative Documenting Results of Pesticide Sampling in Pennsylvania Groundwater

Publications

Using a time-of-travel sampling approach to quantify per- and polyfluoroalkyl substances (PFAS) stream loading and source inputs in a mixed-source, urban catchment

Understanding per- and polyfluoroalkyl substances (PFAS) mass distribution in surface and groundwater systems can support source prioritization, load reduction, and water management. Thirteen sites within an urban catchment were sampled utilizing a time-of-travel sampling approach to minimize the influence of subdaily fluctuations in mass from PFAS point sources and to quantify PFAS and ancillary
Authors
Emily Woodward, Lisa A. Senior, Jacob Fleck, Larry B. Barber, Angela Hansen, Joseph W. Duris

Population genetic structure and demographic history reconstruction of introduced flathead catfish (Pylodictis olivaris) in two US Mid-Atlantic rivers

Population genetic analysis of invasive populations can provide valuable insights into the source of introductions, pathways for expansion, and their demographic histories. Flathead catfish (Pylodictis olivaris) are a prolific invasive species with high fecundity, long-distance dispersal, and piscivorous feeding habits that can lead to declines in native fish populations. In this study, we analyse
Authors
Justin Waraniak, Michael S. Eackles, Jason Keagy, Geoffrey D. Smith, Megan Schall, Sydney Stark, Shannon L. White, David C. Kazyak, Tyler Wagner

Exploring spatial and temporal symptoms of the freshwater salinization syndrome in a rural to urban watershed

The freshwater salinization syndrome (FSS), a concomitant watershed-scale increase in salinity, alkalinity, and major-cation and trace-metal concentrations, over recent decades, has been described for major rivers draining extensive urban areas, yet few studies have evaluated temporal and spatial FSS variations, or causal factors, at the subwatershed scale in mixed-use landscapes. This study exami
Authors
Nicole K. Marks, Charles A. Cravotta, Marissa Lee Rossi, Camila Silva, Peleg Kremer, Steven T. Goldsmith

Science

Hydrologic and Water Quality Studies of PFAS in Pennsylvania

USGS is working with federal, state, and local partners to monitor and evaluate perfluoroalkyl and polyfluoroalkyl substances (PFAS) in Pennsylvania's groundwater and surface waters. A recent study sampled tap water in Pennsylvania (and other states) and detected PFAS chemicals in some samples.
link

Hydrologic and Water Quality Studies of PFAS in Pennsylvania

USGS is working with federal, state, and local partners to monitor and evaluate perfluoroalkyl and polyfluoroalkyl substances (PFAS) in Pennsylvania's groundwater and surface waters. A recent study sampled tap water in Pennsylvania (and other states) and detected PFAS chemicals in some samples.
Learn More

Chester County, Pennsylvania

USGS has had a cooperative program with Chester County, Pennsylvania, to measure and describe water resources since 1969. Cooperation has been primarily with the Chester County Water Resources Authority, with participation from the Chester County Health Department. This partnership provides Chester County with scientific information for water-resources management.
link

Chester County, Pennsylvania

USGS has had a cooperative program with Chester County, Pennsylvania, to measure and describe water resources since 1969. Cooperation has been primarily with the Chester County Water Resources Authority, with participation from the Chester County Health Department. This partnership provides Chester County with scientific information for water-resources management.
Learn More

Pesticides in Pennsylvania Groundwaters

USGS annually samples domestic groundwater wells to characterize pesticides, nutrients, and radon in agricultural areas, in cooperation with the Pennsylvania Department of Agriculture. Beginning in 2021, samples for major ions, trace elements, bacteria, and isotopes will also be collected. A subset of wells will be sampled for per- and polyfluoroalkyl substances (PFAS), emerging industrial...
link

Pesticides in Pennsylvania Groundwaters

USGS annually samples domestic groundwater wells to characterize pesticides, nutrients, and radon in agricultural areas, in cooperation with the Pennsylvania Department of Agriculture. Beginning in 2021, samples for major ions, trace elements, bacteria, and isotopes will also be collected. A subset of wells will be sampled for per- and polyfluoroalkyl substances (PFAS), emerging industrial...
Learn More
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