Unified Interior Regions

Pennsylvania

Our water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Delaware and Susquehanna Rivers and evaluation of groundwater resources in various parts of the Commonwealth. Today Pennsylvania Water Science Center's cadre of nearly 100 scientists, technicians and support staff throughout the state collect scientific data to inform the public.

Pennsylvania Water Science Center

Pennsylvania Water Science Center

215 Limekiln Road
New Cumberland, PA 17070

Phone: (717) 730-6900
Fax: (717) 730-6997

Pennsylvania Water

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Our water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Delaware and Susquehanna Rivers and evaluation of groundwater resources in various parts of the Commonwealth. Today Pennsylvania Water Science Center's cadre of nearly 100 scientists, technicians and support staff throughout the state collect scientific data to inform the public.

News

Date published: October 1, 2020

USGS Upgrades StreamStats for Pennsylvania

The Pennsylvania Water Science Center (PaWSC) has upgraded StreamStats with the latest National Hydrography Dataset (NHD)...

Date published: October 1, 2020

Drought Warning Declared in 3 Pennsylvania Counties, Watch Expanded to 29 Counties

USGS groundwater and surface water monitoring data contributed to the August 21, 2020 drought watch declaration for 16 counties by the Pennsylvania Department of Environmental Protection (PaDEP). The last drought watch ended in May 2017.

On September 30, 2020, PaDEP expanded the drought declarations with warnings in 3 counties and watches in 29 counties. 

Date published: September 29, 2020

Earth MRI Funds Critical Minerals Projects in Pennsylvania

A total of $100,000 will fund new research and preserve important data across the Keystone State

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Date published: October 14, 2020
Status: Active

Pennsylvania and the Chesapeake Bay Watershed

USGS provides monitoring, analysis, modeling and research on streams and water quality to better understand the fate and transport of nutrients and sediment to the Susquehanna River and its tributaries and eventually to the Chesapeake Bay. Additional research efforts in the Susquehanna River basin focus on emerging contaminants and other stressors that effect human and aquatic life in the...

Date published: September 28, 2020
Status: Active

Pennsylvania StreamStats

StreamStats is a national web-based application that provides selected water-resource information for Pennsylvania. Users can easily obtain descriptive information, basin characteristics, and streamflow statistics for USGS streamgages and ungaged stream locations throughout the Commonwealth.

Date published: September 14, 2020
Status: Active

Water Quality Monitoring to Inform Conservation Management, Fishing Creek, Clinton County, Pennsylvania

USGS conducted synoptic sampling of major-ion chemistry and the nitrogen and oxygen isotopic composition of nitrate in Fishing Creek during base flow to evaluate the occurrence and distribution of nutrients and to characterize biogeochemical processes.

Contacts: John Clune
Date published: August 31, 2020
Status: Active

Shale Gas and Water Resources in Pennsylvania

The Pennsylvania Water Science Center and other USGS scientists are studying water availability, use, quality, and ecology associated with development of shale-gas energy resources in Pennsylvania.

Latest Report: Potter County 'Baseline' Groundwater Quality (see Publications)

Date published: July 31, 2020
Status: Active

Streamflow Estimation from Advanced Imaging (LSPIV) in Pennsylvania

Pennsylvania Water Science Center and the Next Generation Water Observing Systems (NGWOS) Program are implementing new technologies for streamflow estimation at sites in Pennsylvania where conventional measurement techniques are inadequate.

Date published: July 6, 2020
Status: Active

Delaware River Basin

In Pennsylvania, the USGS's water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Delaware and Susquehanna Rivers and assessments of groundwater resources near Philadelphia. The USGS Pennsylvania Water Science Center continues to provide scientific information about the water resources of the Delaware River Basin, in cooperation with regional and...

Date published: June 18, 2020
Status: Active

Contaminants in groundwater near former Navy bases in southeastern Pennsylvania

USGS has investigated groundwater flow and contaminant transport in the vicinity of former Navy bases in Bucks and Montgomery Counties, southeastern Pennsylvania, in cooperation with the U.S. Navy. Additional cooperative support for these investigations has been provided by the U.S. Environmental Protection Agency, Pennsylvania Department of Environmental Protection, Bucks and Montgomery...

Contacts: Lisa A Senior
Date published: June 4, 2020
Status: Completed

Framework for Examining Stream Ecosystem Health in Areas of Shale Gas Development—A Multi-Parameter Watershed-Based Case Study in Pennsylvania

In a case study of 25 headwater streams in Pennsylvania, no statistically significant associations were determined between shale gas development and geochemical tracers of produced waters or measures of microbial and macroinvertebrate community composition.  Although the results are specific to the region studied, the integrated biological and geochemical framework provides a tool for...

Date published: June 4, 2020
Status: Active

Vernal Pool Inundation Models

This website provides an application for exploring modeling results from a U.S. Geological Survey (USGS) project titled ...

Date published: May 7, 2020
Status: Active

Pennsylvania Groundwater Quality Monitoring Network

USGS Pennsylvania Water Science Center, in cooperation with the Pennsylvania Department of Environmental Protection, samples 28 wells biannually to monitor ambient groundwater quality conditions throughout Pennsylvania.

Date published: May 1, 2020
Status: Active

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 the Pennsylvania's groundwater and surface waters.

Date published: April 27, 2020
Status: Active

Sediment and Stream Health - Pennsylvania

Sediment in streams, from land surface erosion in watersheds, is an important factor in determining the quality of Pennsylvania's surface waters and of downstream water bodies such as the Delaware Estuary and Chesapeake Bay. The USGS has a long-standing tradition of measuring suspended-sediment concentrations and estimating loads. Recent technological advances allow real-time estimates of...

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Date published: October 21, 2020

Pennsylvania Groundwater Quality Monitoring Network

USGS Pennsylvania Water Science Center, in cooperation with the Pennsylvania Department of Environmental Protection, samples 28 wells biannually to monitor ambient groundwater quality conditions in a variety of settings throughout Pennsylvania. The most recent results for selected constituents can be accessed through the Groundwater Quality...

Date published: October 20, 2020

Pennsylvania StreamStats

StreamStats is a national web-based application that provides selected water-resource information for Pennsylvania. Users can easily obtain descriptive information, basin characteristics, and streamflow statistics for USGS streamgages and ungaged stream locations throughout the Commonwealth. Water use data is also available for Pennsylvania in StreamStats.

Date published: October 8, 2020

Philadelphia Water Quality Monitoring Network

The Philadelphia Water Department (PWD) and USGS have been working together to create and expand the water-quality monitoring network for Philadelphia. Data from these gaging stations will allow PWD scientists and engineers to monitor spatial and temporal water quality/quantity trends in the City in support of watershed restoration initiatives occurring within the City. 

Date published: August 28, 2020

Daily-timestep and monthly-timestep estimates of baseflow at 49 reference stream gages located within 25 miles of the Delaware River basin watershed boundary for the years 1950 through 2015

This USGS data release contains daily-timestep and monthly-timestep estimates of baseflow at 49 reference stream gages located within 25 miles of the Delaware River basin watershed boundary. Estimates are provided for the available period of record of streamflow data at each site between 1950 and 2015. A two-parameter recursive digital filter was used to estimate baseflow at the selected...

Date published: July 27, 2020

Loads and trends in the Chesapeake Bay nontidal monitoring network: results through Water Year 2018

The U.S. Geological Survey (USGS) has developed the nontidal network mapper to share the short-term (2009-2018) water-year nutrient and suspended-sediment load and trend results for the Chesapeake Bay Program’s (CBP) non-tidal network (NTN). The mapper provides the primary findings for nitrogen, phosphorus and suspended-sediment trends, and gives the user tools to further examine the results...

Date published: June 23, 2020

Global Geochemical Database for Critical Minerals in Archived Mine Samples

The Critical Minerals in Archived Mine Samples Database (CMDB) contains chemistry and geologic information for historic ore and ore-related rock samples from mineral deposits in the United States. In addition, the database contains samples from archetypal deposits from 27 other countries in North America, South America, Asia, Africa and Europe. Samples were obtained from archived ore

Date published: April 23, 2020

Domestic Wells in the United States

Domestic wells provide drinking water supply for approximately 40 million people in the United States. Knowing the location of these wells, and the populations they serve, is important for identifying heavily used aquifers, locations susceptible to contamination, and populations potentially impacted by poor-quality groundwater. 

Date published: February 5, 2020

Compiled data for groundwater levels, groundwater withdrawals by wells and quarries, and point-source discharges to streams in the vicinity of Willow Grove and Warminster, Bucks and Montgomery Counties, Pennsylvania, for selected years during 1999-2017

This USGS Data Release includes hydrologic data compiled for selected years during the period 1990-2017 to support the development and calibration of a numerical groundwater model used to simulate groundwater flow paths at and near former and currently active military bases in Montgomery and Bucks Counties in southeastern Pennsylvania (Goode and Senior, 2020). The hydrologic data compiled f...

Date published: January 24, 2020

Compilation of data not available in the National Water Information System for domestic wells sampled by the U.S. Geological Survey in Clinton County, Pennsylvania, May-September 2017

This dataset contains the lithologic class and topographic position index information and quality-assurance and quality-control data not available in the online National Water Information System for 54 domestic wells sampled by the U.S. Geological Survey in Clinton County, Pennsylvania, May-September 2017. The topographic position index (TPI) for each well location was computed on the bas

Date published: October 2, 2019

USGS National and Global Oil and Gas Assessment Project - Appalachian Basin Province, Point Pleasant Formation and Utica Shale Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered gas hydrate resources on the north slope of Alaska. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum...

Date published: October 2, 2019

USGS National and Global Oil and Gas Assessment Project - Appalachian Basin Province, Middle Devonian Marcellus Shale Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province, 2019. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the...

Date published: April 9, 2019

Drought Streamflow Probabilities in Northeast Region

Maximum likelihood logistic regression (MLLR) is used to estimate drought probabilities for selected Northeast rivers and streams. Winter streamflows are used to estimate the chance of hydrologic drought during summer months. This application allows the display and query of these drought streamflow probabilities for Northeastern streams.

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Floodplain Ecosystem Service Mapper
September 10, 2020

Healthy floodplains and wetlands provide critical ecosystem services to local and downstream communities by retaining sediments, nutrients, and floodwaters. Land conversion and degradation diminish floodplain functionality and services.

Thumbnail image of map showing groundwater quality in Pennsylvania
May 7, 2020

USGS Pennsylvania Water Science Center, in cooperation with the Pennsylvania Department of Environmental Protection, samples 28 wells biannually to monitor ambient groundwater quality conditions in a variety of settings throughout Pennsylvania.

Black and grey map of the contiguous 48 states shaded by the number of people using domestic wells per square kilometer (2010)
April 23, 2020

Domestic wells provide drinking water supply for approximately 40 million people in the United States. Knowing the location of these wells, and the populations they serve, is important for identifying heavily used aquifers, locations susceptible to contamination, and populations potentially impacted by poor-quality groundwater. 

Flood Inundation Mapper - Pennsylvania
May 2, 2019

USGS Flood Inundation Mapper Web Application

Map of potential radon exposure from groundwater and indoor air in Pennsylvania
May 1, 2019

The thumpnail map is figure 7 in 

Gross, E.L., 2017, Evaluation of radon occurrence in groundwater from 16 geologic units in Pennsylvania, 1986–2015, with application to potential radon exposure from groundwater and indoor air: U.S. Geological Survey Scientific Investigations Report 2017–5018, 24 p., https://doi.org/10.3133/sir20175018.

Digital map data for this and other maps are available.

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

USGS Storm-Tide Mapper and Data Services
March 8, 2016

The USGS Storm Tide Mapper is a tool for viewing, analyzing, and accessing storm tide data collected during and after hurricanes and Nor’easters. The USGS Storm Tide Mapper will continue to provide a unified and consistent source of real-time and archived storm-tide data.

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Year Published: 2020

Development of a suite of functional immune assays and initial assessment of their utility in wild smallmouth bass health assessments

Methods were developed for measuring immune function in Micropterus dolomieu (smallmouth bass). The ultimate objective is to monitor and evaluate changes over time in immune status and disease resistance in conjunction with other characteristics of fish health and environmental stressors. To test these methods for utility in ecotoxicological...

Smith, Cheyenne R.; Ottinger, Christopher A.; Walsh, Heather L.; Blazer, Vicki S.
Smith, C.R., Ottinger, C.A., Walsh, H.L., and Blazer, V.S., 2020, Development of a suite of functional immune assays and initial assessment of their utility in wild smallmouth bass health assessments: U.S. Geological Survey Open-File Report 2020–1077, 23 p., https://doi.org/10.3133/ofr20201077.

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Year Published: 2020

Groundwater quality in relation to drinking water health standards and hydrogeologic and geochemical characteristics for 47 domestic wells in Potter County, Pennsylvania, 2017

As part of a regional effort to characterize groundwater in rural areas of Pennsylvania, water samples from 47 domestic wells in Potter County were collected from May through September 2017. The sampled wells had depths ranging from 33 to 600 feet in sandstone, shale, or siltstone aquifers. Groundwater samples were analyzed for physicochemical...

Galeone, Daniel G.; Cravotta, Charles A. ; Risser, Dennis W.
Galeone, D.G., Cravotta, C.A., III, and Risser, D.W., 2020, Groundwater quality in relation to drinking water health standards and hydrogeologic and geochemical characteristics for 47 domestic wells in Potter County, Pennsylvania, 2017: U.S. Geological Survey Scientific Investigations Report 2020–5038, p.67, https://doi.org/10.3133/sir20205038.

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Year Published: 2020

Estimating streamflow and base flow within the nontidal Chesapeake Bay riverine system

Daily mean streamflow was estimated for all the nontidal parts of the Chesapeake Bay riverine system with the Unit Flows in Networks of Channels computer application using measured streamflow at the most downstream gage of selected rivers. The streamflows estimated by the Unit Flows in Networks of Channels computer application were aggregated at...

Buffington, Patrick C.; Capel, Paul D.
Buffington, P.C., and Capel, P.D., 2020, Estimating streamflow and base flow within the nontidal Chesapeake Bay riverine system: U.S. Geological Survey Scientific Investigations Report 2020–5055, 26 p., https://doi.org/10.3133/sir20205055.

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Year Published: 2020

Groundwater quality in relation to drinking water health standards and geochemical characteristics for 54 domestic wells in Clinton County, Pennsylvania, 2017

Despite the reliance on groundwater by approximately 2.4 million rural Pennsylvania residents, publicly available data to characterize the quality of private well water are limited. As part of a regional effort to characterize groundwater in rural areas of Pennsylvania, samples from 54 domestic wells in Clinton County were collected and analyzed...

Clune, John W.; Cravotta, Charles A.
Clune, J.W., and Cravotta, C.A., III, 2020, Groundwater quality in relation to drinking water health standards and geochemical characteristics for 54 domestic wells in Clinton County, Pennsylvania, 2017 (ver 1.1, July 2020): U.S. Geological Survey Scientific Investigations Report 2020–5022, 72 p., https://doi.org/10.3133/sir20205022.

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Year Published: 2020

Aquatic invasive species in the Chesapeake Bay drainage—Research-based needs and priorities of U.S. Geological Survey partners and collaborators

Executive SummaryThe U.S. Geological Survey (USGS) is revising the Chesapeake Bay-based science plan to align it with recent U.S. Department of Interior and USGS science priorities that include, as stated in the plan, providing “an integrated understanding of the factors affecting fish habitat, fish health, and landscape conditions” in Chesapeake...

Densmore, Christine L.
Densmore, C.L., 2020, Aquatic invasive species in the Chesapeake Bay drainage—Research-based needs and priorities of U.S. Geological Survey partners and collaborators: U.S. Geological Survey Open-File Report 2020–1057, 23 p., https://doi.org/10.3133/ofr20201057.

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Year Published: 2020

Sediment dynamics and implications for management: State of the science from long‐term research in the Chesapeake Bay watershed, USA

This review aims to synthesize the current knowledge of sediment dynamics using insights from long‐term research conducted in the watershed draining to the Chesapeake Bay, the largest estuary in the U.S., to inform management actions to restore the estuary and its watershed. The sediment dynamics of the Chesapeake are typical of many impaired...

Noe, Gregory B.; Cashman, Matthew J.; Skalak, Katherine; Gellis, Allen; Hopkins, Kristina G.; Moyer, Douglas; Webber, James S.; Benthem, Adam; Maloney, Kelly O.; Brakebill, John; Sekellick, Andrew; Langland, Michael J.; Zhang, Qian; Shenk, Gary Wynee; Keisman, Jennifer L.D.; Hupp, Cliff R.

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Year Published: 2020

Report of the River Master of the Delaware River for the period December 1, 2010–November 30, 2011

A Decree of the Supreme Court of the United States, entered June 7, 1954, established the position of Delaware River Master within the U.S. Geological Survey. In addition, the Decree authorizes diversion of water from the Delaware River Basin and requires compensating releases from certain reservoirs, owned by New York City, to be made under the...

DiFrenna, Vincent J.; Andrews, William J.; Russell, Kendra L.; Norris, J. Michael; Mason,, Robert R.
DiFrenna, V.J., Andrews, W.J., Russell, K.L., Norris, J.M., and Mason, R.R., Jr., 2020, Report of the River Master of the Delaware River for the period December 1, 2010–November 30, 2011: U.S. Geological Survey Open-File Report 2020–1020, 127 p., https://doi.org/10.3133/ofr20201020.

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Year Published: 2020

Near-field remote sensing of surface velocity and river discharge using radars and the probability concept at 10 USGS streamgages

Near-field remote sensing of surface velocity and river discharge (discharge) were measured using coherent, continuous wave Doppler and pulsed radars. Traditional streamgaging requires sensors be deployed in the water column; however, near-field remote sensing has the potential to transform streamgaging operations through non-contact methods in...

Fulton, John; Mason, Christopher Allen; Eggleston, Jack R.; Nicotra, Matthew J.; Chiu, C.-L.; Henneberg, Mark F.; Best, Heather; Cederberg, Jay; Holnbeck, Stephen R.; Lotspeich, R. Russell; Laveau, Christopher; Moramarco, Tommaso; Jones, Mark E.; Gourley, Jonathan J; Wasielewski, Danny

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Year Published: 2020

Effects of legacy sediment removal and effects on nutrients and sediment in Big Spring Run, Lancaster County, Pennsylvania, 2009–15

Big Spring Run is a 1.68-square mile watershed underlain by mostly carbonate rock in a mixed land-use setting (part agricultural and part developed) in Lancaster County, Pennsylvania. Big Spring Run is a subwatershed of Mill Creek, a tributary to the Conestoga River. These watersheds are known contributors of nutrient and sediment loads to the...

Langland, Michael J.; Duris, Joseph W.; Zimmerman, Tammy M.; Chaplin, Jeffrey J.
Langland, M.J., Duris, J.W., Zimmerman, T.M., and Chaplin, J.J., 2020, Effects of legacy sediment removal and effects on nutrients and sediment in Big Spring Run, Lancaster County, Pennsylvania, 2009–15: U.S. Geological Survey Scientific Investigations Report 2020-5031, 28 p., https://doi.org/10.3133/sir20205031.

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Year Published: 2020

Assessment of microscopic pathology in fishes collected at sites impacted by wood tar in Pennsylvania

In an effort to determine whether fish populations in an area affected by wood tar waste exhibited health effects, fish were collected and analyzed with histopathology. Multiple species, including Mottled Sculpin (Cottus bairdii), Creek Chub (Semotilus atromaculatus), White Sucker (Catostumus commersonii), Redside Dace (Clinostomus elongatus),...

Walsh, Heather L.; Blazer, Vicki S.; Mazik, Patricia M.; Sperry, Adam J.; Pavlick, Diana
Walsh, H.L., Blazer, V.S., Mazik, P.M., Sperry, A.J., and Pavlick, D., 2020, Assessment of microscopic pathology in fishes collected at sites impacted by wood tar in Pennsylvania: U.S. Geological Survey Open-File Report 2020–1024, 14 p., https://doi.org/10.3133/ofr20201024.

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Year Published: 2020

A historical look at changing water quality in the Delaware River Basin

In 2019 the U.S. Geological Survey (USGS) launched a pilot regional Integrated Water Availability Assessment (IWAA) in the Delaware River Basin (fig. 1). IWAA is intended to explore, test, and refine systems and processes for assessing water availability for human and ecological uses and understanding their underlying controls. Water quality plays...

Murphy, Jennifer C.; Shoda, Megan E.
Murphy, J.C., and Shoda, M.E., 2020, A historical look at changing water quality in the Delaware River Basin: U.S. Geological Survey Fact Sheet 2020–3007, 2 p., https://doi.org/10.3133/fs20203007.

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Year Published: 2020

Pooling resources across organizations—Multisource water-quality data for the Delaware River Basin

The U.S. Geological Survey (USGS) recently launched a pilot Integrated Water Availability Assessment (IWAA) in the Delaware River Basin to explore, test, and refine systems and processes for assessing water availability for human and ecological uses based on water monitoring data. Water-quality monitoring provides citizens, managers, and...

Murphy, Jennifer C.; Shoda, Megan E.
Murphy, J.C., and Shoda, M.E., 2020, Pooling resources across organizations—Multisource water-quality data for the Delaware River Basin: U.S. Geological Survey Fact Sheet 2020–3006, 2 p., https://doi.org/10.3133/fs20203006.

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Pennsylvania Baseline Streamflow Estimator Screen Capture
September 26, 2012

Estimation of Baseline Daily Mean Streamflows for Ungaged Locations on Pennsylvania Streams, Water Years 1960–2008

Opening screen of the water-analysis screening tool WAST.
April 2, 2009

Water-Analysis Screening Tool (WAST): A Tool for Assessing Available Water Resources in Relation to Aquatic-Resource Uses

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Juxtaposed still images from videos of low and high flows in a stream
September 30, 2020

Low (top) and high (bottom) flow video images, Frankford Creek, PA

Still images from videos of surface water flow overlaid with velocity vectors during low (top) and high (bottom) flow conditions in Frankford Creek, Philadelphia, Pennsylvania, September 2020. These videos were processed using large-scale particle imaging velocimetry (LSPIV) to estimate streamflow in a location where standard methods are inadequate. 

Photograph of weir notch with low flow, Young Womans Creek, Pennsylvania
September 23, 2020

Low streamflow at USGS streamgage Young Womans Creek near Renovo, PA

Low streamflow in late September, 2020 at USGS streamgage Young Womans Creek near Renovo, Pennsylvania (01545600). At the time of these photographs, the streamflow was 1.5 cubic feet per second (673 gallons per minute), which is equal to the 7-day, 10-year low flow statistic

...
Photograph of broad weir notch with low flow, Young Womans Creek, Pennsylvania
September 23, 2020

Low streamflow at USGS streamgage Young Womans Creek near Renovo, PA_2

Low streamflow in late September, 2020 at USGS streamgage Young Womans Creek near Renovo, Pennsylvania (01545600). At the time of these photographs, the streamflow was 1.5 cubic feet per second (673 gallons per minute), which is equal to the 7-day, 10-year low flow statistic

...
Image shows a USGS streamgage partially submerged in floodwaters
August 4, 2020

Flooded Pennsylvania Streamgage after Hurricane Isaias

This USGS streamgage on Schantz Spring near Wescosville, Pennsylvania was partially submerged after floodwaters from Tropical Storm Isaias quickly rose and flooded the area. USGS crews arrived on scene August 4 to

...
March 1, 2020

Karst Hazards Research at USGS Florence Bascom Geoscience Center (AD)

The Florence Bascom Geoscience Center conducts geologic research using digital elevation models to map karst systems and sinkhole hazards in the United States. Understanding these complex geologic systems helps to inform land use planning and development decisions. The

March 1, 2020

Karst Hazards Research at the USGS Florence Bascom Geoscience Center

The Florence Bascom Geoscience Center conducts geologic research using digital elevation models to map karst systems and sinkhole hazards in the United States. Understanding these complex geologic systems helps to inform land use planning and development decisions. The 

Photograph of boat and bridge, Allegheny River, Pennsylvania
January 23, 2020

A beautiful morning for an ADCP measurement on the Allegheny River, PA

A beautiful morning for an Acoustic Doppler Current Profiler measurement on the Allegheny River, Pennsylvania. 

May 2, 2019

Phragmites Adaptive Management Framework: Model Overview

This animation is the third video in a series explaining different aspects of the Phragmites Adaptive Management Framework (PAMF). This video focuses on the machine learning model that PAMF uses to systematically learn from participant's data and then provide site-specific management guidance in return. More information about PAMF can be found at our websites:

Photograph of technician measuring streamflow in a stream with a covered bridge
April 24, 2019

Hydrologist Hilary Abraham measuring flow in Fishing Creek, PA

USGS Hydrologist Hilary Abraham measuring stream discharge during sampling, to allow calculation of loads, in Fishing Creek, Logan Township, Clinton County, Pennsylvania, just below the Logan Mills Covered Bridge.

Image from an application that navigates users through USGS National Oil and Gas Assessment Provinces
November 14, 2018

National Oil and Gas Assessment Provinces

This is a graphic from the USGS National Oil and Gas Assessment Explorer application, which allows user to drill into 70 oil and gas assessment provinces throughout the United States.

Quarry photo with dipping sedimentary rock, SE Penn. Newark Basin
October 5, 2018

Quarry walls showing dipping sedimentary rocks of Newark Basin, Penn.

Photograph showing dipping sedimentary rocks of the Newark Basin in southeastern Pennsylvania. Taken during the 2018 Field Conference of Pennsylvania Geologists. 

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Screenshot of StreamStats showing Pennsylvania
October 1, 2020

The Pennsylvania Water Science Center (PaWSC) has upgraded StreamStats with the latest National Hydrography Dataset (NHD) flowlines and Watershed Boundary Dataset (WBD) drainage basins. More accurate basin delineations and basin characteristics, and improved estimates of streamflow are now available for any stream location in the Commonwealth of Pennsylvania.

Pennsylvania Drought Condition Monitoring Map
October 1, 2020

USGS groundwater and surface water monitoring data contributed to the August 21, 2020 drought watch declaration for 16 counties by the Pennsylvania Department of Environmental Protection (PaDEP). The last drought watch ended in May 2017.

On September 30, 2020, PaDEP expanded the drought declarations with warnings in 3 counties and watches in 29 counties. 

Earth MRI Funds Critical Minerals Projects in Pennsylvania
September 29, 2020

A total of $100,000 will fund new research and preserve important data across the Keystone State

Pennsylvania Drought Condition Monitoring Map
September 9, 2020

This 2nd issue of Pennsylvania Waters highlights USGS data and mapping support for drought management, record flood peaks (in the same month!), recognition for Matthew Gyves, a Hydrologic Technician in the Pennsylvania Water Science Center, innovative streamflow monitoring methods, Potter County groundwater quality, new findings on lead and polonium in groundwater, and more.

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Map of baseline groundwater quality assessments in Pennsylvania
September 4, 2020

A report on the groundwater quality of Potter County is the latest of seven publications characterizing water quality of aquifers underlying central and northern tier counties. Wells were sampled throughout Potter County with funding support from Commonwealth Financing Authority through the Marcellus Legacy Fund. 

Photograph of USGS staff locating high water mark in flooded creek
September 2, 2020

Hurricane Isaias swept over eastern Pennsylvania August 4th and 5th, dumping upwards of 8 inches of rain and resulting in wide-spread flooding. New high flow records included a measured streamflow of 6,920 cubic feet per second in the East Branch Brandywine Creek below Downingtown, Pennsylvania, the highest since the gage was installed almost 50 years ago.

Matthew Gyves
August 26, 2020

Matthew C. Gyves, a Hydrologic Technician in the Pennsylvania Water Science Center's Downingtown Office, received the 2020 "Data Person of the Year" award from the USGS Water Resources Mission Area. 

Image shows USGS field crew conducting measurements on flooding streams
August 4, 2020

To learn more about USGS’s role in providing science to decision makers before, during, and after Hurricane Isaias, visit the USGS Hurricane Isaias page at https://www.usgs.gov/isaias

Dragonfly larvae being held in an open hand
July 21, 2020

A team of federal, academic, and NGO researchers conducted a national-scale assessment of mercury bioaccumulation in aquatic ecosystems using dragonfly larvae as biosentinels.

Photo of drone with ground-penetrating radar system flying close over river surface
June 5, 2020

Introducing the Pennsylvania Water Science Center’s Newsletter, Pennsylvania Waters. Our newsletter will be published periodically to keep you informed of the latest USGS water-resources information for the Commonwealth of Pennsylvania. Articles present new data, reports, activities, and outreach from our center as well as USGS national and regional programs. 
You can also follow us on Instagram.

Photo of drone with ground-penetrating radar system flying close over river surface
June 5, 2020

Melinda Chapman, recently appointed Director of the Pennsylvania Water Science Center (previously Assistant Chief of the USGS Office of Groundwater), introduces the first issue of the Pennsylvania Waters newsletter, available via http://www.usgs.gov/pennsylvania-waters-newsletters.

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Pennsylvania Water Science Center

Pennsylvania Water Science Center

215 Limekiln Road
New Cumberland, PA 17070

Phone: (717) 730-6900
Fax: (717) 730-6997

Pennsylvania Water