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Lisa A Senior

Lisa Senior is a hydrologist with the USGS Pennsylvania Water Science Center and has been involved with both groundwater and surface-water investigations since 1986, becoming Project Chief for numerous studies in Pennsylvania since 1988.  

Recent Studies

  • Characterization of fractured-rock hydrogeology of the Newark Basin to support contaminant delineation, monitoring, and remedial management in southeastern Pennsylvania
  • Baseline surveys of groundwater quality in and near areas of Marcellus Shale gas development
  • Evaluations of naturally occurring radionuclides, trace elements, and methane in groundwater
  • Effects of land use on groundwater and surface-water quality
  • Modeling of surface-water quality

Professional Experience

  • Pennsylvania Water Science Center: 1986 - present

  • Branch of Regional Geophysics, Menlo Park, California: 1981 - 1983

Education and Certifications

  • M.S. in Hydrology, University of Arizona, Tucson

  • B.A. in Geology, Middlebury College, Middlebury, Vermont

Science and Products

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

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 counties...
By
Pennsylvania Water Science Center
Contaminants in groundwater near former Navy bases in southeastern Pennsylvania

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 counties...
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Photo of pipe next to trench in rolling hills, Lycoming County PA

Shale Gas and Water Resources in Pennsylvania

USGS and partner scientists are investigating water availability, use, quality, and ecology associated with development of shale-gas energy resources in Pennsylvania.
By
Pennsylvania Water Science Center
Shale Gas and Water Resources in Pennsylvania

Shale Gas and Water Resources in Pennsylvania

USGS and partner scientists are investigating water availability, use, quality, and ecology associated with development of shale-gas energy resources in Pennsylvania.
Learn More
Collecting blanks for PFAS from freshly decontaminated equipment.

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.
By
Pennsylvania Water Science Center
Hydrologic and Water Quality Studies of PFAS in Pennsylvania

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.
Learn More
Photograph of road cut showing fractured sedimentary rocks

Contaminants in Groundwater near Superfund sites in Pennsylvania

USGS has investigated groundwater flow and contaminant transport in the vicinity of Superfund and other hazardous-waste sites in Pennsylvania, in cooperation with EPA. Additional cooperative support has been provided by the U.S. Department of Defense, National Park Service, Pennsylvania Department of Environmental Protection, Philadelphia, Bucks, Chester, and Montgomery Counties, and local...
By
Pennsylvania Water Science Center
Contaminants in Groundwater near Superfund sites in Pennsylvania

Contaminants in Groundwater near Superfund sites in Pennsylvania

USGS has investigated groundwater flow and contaminant transport in the vicinity of Superfund and other hazardous-waste sites in Pennsylvania, in cooperation with EPA. Additional cooperative support has been provided by the U.S. Department of Defense, National Park Service, Pennsylvania Department of Environmental Protection, Philadelphia, Bucks, Chester, and Montgomery Counties, and local...
Learn More
Screenshot of Chester County (PA) Monitoring Network web app

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.
By
Pennsylvania Water Science Center
Chester County, Pennsylvania

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
Farms, forests and rolling hills in Lycoming County, PA

Regional Synthesis of Groundwater Quality in Domestic Supply Wells in Northeast and North Central Pennsylvania

USGS synthesized groundwater quality measurements in wells to characterize regional chemical characteristics of aquifers used for domestic supply in northeast and north central Pennsylvania.
By
Pennsylvania Water Science Center
Regional Synthesis of Groundwater Quality in Domestic Supply Wells in Northeast and North Central Pennsylvania

Regional Synthesis of Groundwater Quality in Domestic Supply Wells in Northeast and North Central Pennsylvania

USGS synthesized groundwater quality measurements in wells to characterize regional chemical characteristics of aquifers used for domestic supply in northeast and north central Pennsylvania.
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Map of baseline groundwater quality assessments in Pennsylvania

Groundwater Quality of Domestic Supply Wells in Pennsylvania

Most rural residents in Pennsylvania use groundwater from domestic supply wells for drinking, cleaning and other purposes. Some groundwater samples have been analyzed for private purposes, but those results generally are not readily available to the public. Many of the publicly available water-quality samples from rural areas were collected more than 30 years ago. Quality-assured groundwater...
By
Pennsylvania Water Science Center
Groundwater Quality of Domestic Supply Wells in Pennsylvania

Groundwater Quality of Domestic Supply Wells in Pennsylvania

Most rural residents in Pennsylvania use groundwater from domestic supply wells for drinking, cleaning and other purposes. Some groundwater samples have been analyzed for private purposes, but those results generally are not readily available to the public. Many of the publicly available water-quality samples from rural areas were collected more than 30 years ago. Quality-assured groundwater...
Learn More
Graphic - Archives

Pre-2013 Bibliography of USGS publications - Chester County, Pennsylvania (Archive)

This is an Archive. A bibliography of USGS publications for Chester County, Pennsylvania, Pre-2013. Pre-2013 Publications available from the USGS Publications Warehouse are on the "Publications" tab. Other publications listed below are not, or in some cases are only partially available at the Publications Warehouse.
By
Pennsylvania Water Science Center
Pre-2013 Bibliography of USGS publications - Chester County, Pennsylvania (Archive)

Pre-2013 Bibliography of USGS publications - Chester County, Pennsylvania (Archive)

This is an Archive. A bibliography of USGS publications for Chester County, Pennsylvania, Pre-2013. Pre-2013 Publications available from the USGS Publications Warehouse are on the "Publications" tab. Other publications listed below are not, or in some cases are only partially available at the Publications Warehouse.
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Map of potential radon exposure from groundwater and indoor air in Pennsylvania

Evaluation of Radon in Groundwater and Indoor Air in Pennsylvania

Existing groundwater and indoor air radon-222, hereafter referred to as "radon", concentrations were aggregated and evaluated for 16 geologic units throughout the state of Pennsylvania to provide a better understanding of potential human exposure to radon.
By
Pennsylvania Water Science Center
Evaluation of Radon in Groundwater and Indoor Air in Pennsylvania

Evaluation of Radon in Groundwater and Indoor Air in Pennsylvania

Existing groundwater and indoor air radon-222, hereafter referred to as "radon", concentrations were aggregated and evaluated for 16 geologic units throughout the state of Pennsylvania to provide a better understanding of potential human exposure to radon.
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Water-quality data for selected small tributaries to the Upper Delaware Scenic and Recreational River, Pennsylvania and New York, 2012-2015 Water-quality data for selected small tributaries to the Upper Delaware Scenic and Recreational River, Pennsylvania and New York, 2012-2015

The U.S. Geological Survey (USGS) collected stream samples at 19 sites in tributaries to the Upper Delaware Scenic and Recreational River during 2012-15 in cooperation with the National Park Service (NPS) through the USGS-NPS Water-Quality Partnership to provide data on existing water-quality in small watersheds not previously characterized and where there was potential for...
By
National Water Quality Program, Pennsylvania Water Science Center

Optical measurements for surface water samples collected within the Neshaminy Creek basin during November 2021 Optical measurements for surface water samples collected within the Neshaminy Creek basin during November 2021

Here we report optical data collected as part of a collaborative study between USGS Pennsylvania Water Science Center, Pennsylvania Department of Environmental Protection and Water Mission Area Proxies Project. The optical measurements reported here were collected to aide in the characterization of water sources and mixtures and establish proxies (surrogates) for per- and poly...
By
California Water Science Center

Altitude of selected beds and inferred faults in boreholes as identified from geophysical logs at Valmont TCE Site, Luzerne County, Pennsylvania Altitude of selected beds and inferred faults in boreholes as identified from geophysical logs at Valmont TCE Site, Luzerne County, Pennsylvania

This dataset contains altitudes of selected beds and inferred faults in boreholes within an area of interest determined by the U.S. Environmental Protection Agency (EPA) at the Valmont TCE Superfund site in Luzerne County, Pennsylvania. The selected beds correspond to sections of borehole geophysical logs with elevated natural gamma activity as described in the U.S. Geological Survey...
By
Pennsylvania Water Science Center

Data compilation for regional synthesis of chemical characteristics of groundwater used for domestic supply in north-east and north-central Pennsylvania Data compilation for regional synthesis of chemical characteristics of groundwater used for domestic supply in north-east and north-central Pennsylvania

Groundwater quality data for 472 domestic well-water samples were retrieved from the USGS National Water Information System (NWIS) database and combined with descriptive information on the sampled well locations. The NWIS data for a sample, collected on the selected date, were averaged into a single record (one per well), and rounded according to USGS protocols. For evaluation and...
By
Pennsylvania Water Science Center

Water-level data and selected field notes for aquifer-interval-isolation tests at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylvania, 2018-19 (ver. 2.0, January 2024) Water-level data and selected field notes for aquifer-interval-isolation tests at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylvania, 2018-19 (ver. 2.0, January 2024)

The U.S. Geological Survey (USGS) conducted aquifer interval isolation (packer) tests of discrete water-bearing zones using straddle packers in 13 wells in Northampton, Warminster, and Warwick Townships and Ivyland Borough, Bucks County, Pennsylvania during 2018-19 to support detailed groundwater investigations at and near the former Naval Air Warfare Center (NAWC) Warminster, where...
By
Pennsylvania Water Science Center

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 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...
By
Pennsylvania Water Science Center

MODFLOW 6 and MODPATH 7 model data sets used to evaluate groundwater flow in the vicinity of Horsham and Warminster, Bucks and Montgomery Counties, Pennsylvania-Preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017 MODFLOW 6 and MODPATH 7 model data sets used to evaluate groundwater flow in the vicinity of Horsham and Warminster, Bucks and Montgomery Counties, Pennsylvania-Preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017

In cooperation with the U.S. Navy, USGS developed and calibrated a numerical MODFLOW 6 model to simulate regional groundwater flow under selected conditions during 1999-2017 at and near the former Willow Grove Naval Air Station Joint Reserve Base in Horsham, Montgomery County and the former Naval Air Warfare Center Warminster in Bucks County, Pennsylvania. The model simulations provide...
By
Pennsylvania Water Science Center

Field properties and results of laboratory analysis of groundwater samples collected from 79 wells in Pike County, Pennsylvania, 1982-2015 Field properties and results of laboratory analysis of groundwater samples collected from 79 wells in Pike County, Pennsylvania, 1982-2015

Water-quality data for groundwater samples collected by the U.S. Geological Survey from 79 wells in Pike County, Pennsylvania, 1982-2015. Data consist of field properties and results of laboratory analysis for concentrations of inorganic constituents, dissolved gases (methane, ethane and propane), radon-222, gross alpha and beta radioactivity, radium-226, and volatile organic compounds...
By
Pennsylvania Water Science Center

Data for regression models developed to estimate fecal coliform concentrations at five stream sites, Chester County, Pennsylvania (2017) Data for regression models developed to estimate fecal coliform concentrations at five stream sites, Chester County, Pennsylvania (2017)

This data release supports the following publication: Senior, Lisa A., 2017, Estimated Fecal Coliform Bacteria Concentrations Using Near Real-Time Water-Quality and Streamflow Data From Five Stream Sites in Chester County, Pennsylvania, 200716: U.S. Geological Survey Scientific-Investigations Report 20175075 (https://doi.org/10.3133/sir20175075). The U.S. Geological Survey (USGS), in...
By
Pennsylvania Water Science Center

Maps showing aeromagnetic data and interpretation for the Kalmiopsis Wilderness, southwestern Oregon Maps showing aeromagnetic data and interpretation for the Kalmiopsis Wilderness, southwestern Oregon

The distinctive magnetic properties of the major rock types in the Kalmiopsis Wilderness of southwestern Oregon facilitate interpretation of aeromagenetic data. The region is composed of tectonic slices of magnetic ultramafic, gabboric, and other ophiolitic rocks faulted against the realitively nonmagnetic Dothan Formation, the equivalent of the Franciscan Complex of Western California...

Mineral resource potential of the Wild Rogue Wilderness (NF105), Coos and Curry Counties, Oregon Mineral resource potential of the Wild Rogue Wilderness (NF105), Coos and Curry Counties, Oregon

No abstract available.

Map and interpretation of aeromagnetic data for the Wild Rogue Wilderness, Coos and Curry Counties, Oregon Map and interpretation of aeromagnetic data for the Wild Rogue Wilderness, Coos and Curry Counties, Oregon

The Wild Rogue Wilderness is located in Coos and Curry Counties, southwestern Oregon and covers part of the Bone Mountain, Marial, and Agness 15-minute quadrangles (fig. 1). It is an elongate area 19 mi by 1 to 3 mi (31 km by 1.3 to 5 km) and covers approximately 35,818 acres extending from the town of Agness to Mount Bolivar. The mapped geology of the Wild Rogue Wilderness (Gray and...
photograph of hillside with ferns, brown leaves, and exposed rock with large pebbles and openings between rock layers
Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania
Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania
photograph of hillside with ferns, brown leaves, and exposed rock with large pebbles and openings between rock layers

Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania

Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania

Exposed Hellam Conglomerate member of the Chickies Quartzite at East Mount Zion Superfund Site, York County, Pennsylvania. (Lisa Senior, USGS)

By
Pennsylvania Water Science Center
photograph of hillside with ferns, brown leaves, and exposed rock with large pebbles and openings between rock layers

Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania

Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania

Exposed Hellam Conglomerate member of the Chickies Quartzite at East Mount Zion Superfund Site, York County, Pennsylvania. (Lisa Senior, USGS)

By
Pennsylvania Water Science Center
photograph of gray rock with embedded pebbles sitting in a bed of green and red leaves and blue flowers
Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania
Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania
photograph of gray rock with embedded pebbles sitting in a bed of green and red leaves and blue flowers

Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania

Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania

Boulder of Hellam Conglomerate member of the Chickies Quartzite at East Mount Zion Superfund Site, York County, Pennsylvania. (Lisa Senior, USGS)

By
Pennsylvania Water Science Center
photograph of gray rock with embedded pebbles sitting in a bed of green and red leaves and blue flowers

Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania

Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania

Boulder of Hellam Conglomerate member of the Chickies Quartzite at East Mount Zion Superfund Site, York County, Pennsylvania. (Lisa Senior, USGS)

By
Pennsylvania Water Science Center
Fairmount Waterworks, Philadelphia, PA
Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA
Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA
Fairmount Waterworks, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Aquarium Drive, Philadelphia, Philadelphia County, PA. View looking northeast at waterworks from across Schuylkill River. Photo taken December, 1984.

By
Water Resources Mission Area, Pennsylvania Water Science Center
Fairmount Waterworks, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Aquarium Drive, Philadelphia, Philadelphia County, PA. View looking northeast at waterworks from across Schuylkill River. Photo taken December, 1984.

By
Water Resources Mission Area, Pennsylvania Water Science Center
Filter Total Items: 42

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 Senior, Dennis W. Risser, Daniel J. Goode, Philip H. Bird
By
Water Resources Mission Area, Pennsylvania Water Science Center

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 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...
Authors
Emily Woodward, Lisa Senior, Jacob Fleck, Larry B. Barber, Angela Hansen, Joseph Duris
By
Water Resources Mission Area, California Water Science Center, Pennsylvania Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

Results of 2018–19 water-quality and hydraulic characterization of aquifer intervals using packer tests and preliminary geophysical-log correlations for selected boreholes at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylva Results of 2018–19 water-quality and hydraulic characterization of aquifer intervals using packer tests and preliminary geophysical-log correlations for selected boreholes at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylva

The U.S. Geological Survey (USGS) collected data on the vertical distribution of hydraulic head, specific capacity, and water quality using aquifer-interval-isolation tests and other vertical profiling methods in 15 boreholes completed in fractured sedimentary bedrock in Northampton, Warminster, and Warwick Townships, Bucks County, Pennsylvania during 2018–19. This work was done, in...
Authors
Lisa Senior, Alex Fiore
By
Water Resources Mission Area, New Jersey Water Science Center, Pennsylvania Water Science Center

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

Factors affecting groundwater quality used for domestic supply within the Marcellus Shale footprint in north-central and north-east Pennsylvania are identified using a combination of spatial, statistical, and geochemical modeling. Untreated groundwater, sampled during 2011–2017 from 472 domestic wells within the study area, exhibited wide ranges in pH (4.5–9.3), total dissolved solids...
Authors
Charles A. Cravotta, Lisa Senior, Matthew Conlon
By
Water Resources Mission Area, Pennsylvania Water Science Center

Geophysical and video logs of selected wells at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylvania, 2017-19 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- and polyfluoroalkyl substances (PFAS)...
Authors
Lisa Senior, J. Anderson, Philip Bird
By
Water Resources Mission Area, Pennsylvania Water Science Center

Hydrogeologic framework, water levels, and selected contaminant concentrations at Valmont TCE Superfund Site, Luzerne County, Pennsylvania, 2020 Hydrogeologic framework, water levels, and selected contaminant concentrations at Valmont TCE Superfund Site, Luzerne County, Pennsylvania, 2020

The Valmont TCE Superfund Site, Luzerne County, Pennsylvania is underlain by fractured and folded sandstones and shales of the Pottsville and Mauch Chunk Formations, which form a fractured-rock aquifer recharged locally by precipitation. Industrial activities at the former Chromatex Plant resulted in trichloroethene (TCE) contamination of groundwater at and near the facility, which was...
Authors
Lisa Senior, Alex Fiore, Philip Bird
By
Water Resources Mission Area, New Jersey Water Science Center, Pennsylvania Water Science Center

Groundwater quality in relation to drinking water health standards and hydrogeologic and geochemical characteristics for 47 domestic wells in Potter County, Pennsylvania, 2017 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 properties that could be evaluated in...
Authors
Daniel Galeone, Charles Cravotta, Dennis Risser
By
Water Resources Mission Area, Pennsylvania Water Science Center

Groundwater withdrawals and regional flow paths at and near Willow Grove and Warminster, Pennsylvania—Data compilation and preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017 Groundwater withdrawals and regional flow paths at and near Willow Grove and Warminster, Pennsylvania—Data compilation and preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017

In 2014, groundwater samples from residential and public supply wells in the vicinity of two former U.S. Navy bases at Willow Grove and Warminster, and an active Air National Guard Station at Horsham, Bucks and Montgomery Counties, Pennsylvania, were found to have concentrations of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), which are per- and polyfluoroalkyl...
Authors
Daniel Goode, Lisa Senior
By
Water Resources Mission Area, Pennsylvania Water Science Center

Baseline assessment of groundwater quality in Pike County, Pennsylvania, 2015 Baseline assessment of groundwater quality in Pike County, Pennsylvania, 2015

The Devonian-age Marcellus Shale and the Ordovician-age Utica Shale, which have the potential for natural gas development, underlie Pike County and neighboring counties in northeastern Pennsylvania. In 2015, the U.S. Geological Survey, in cooperation with the Pike County Conservation District, conducted a study that expanded on a previous more limited 2012 study to assess baseline...
Authors
Lisa Senior, Charles A. Cravotta
By
Water Resources Mission Area, Pennsylvania Water Science Center

Estimated fecal coliform bacteria concentrations using near real-time continuous water-quality and streamflow data from five stream sites in Chester County, Pennsylvania, 2007–16 Estimated fecal coliform bacteria concentrations using near real-time continuous water-quality and streamflow data from five stream sites in Chester County, Pennsylvania, 2007–16

Several streams used for recreational activities, such as fishing, swimming, and boating, in Chester County, Pennsylvania, are known to have periodic elevated concentrations of fecal coliform bacteria, a type of bacteria used to indicate the potential presence of fecally related pathogens that may pose health risks to humans exposed through water contact. The availability of near real...
Authors
Lisa Senior
By
Water Resources Mission Area, Pennsylvania Water Science Center

Effects of changes in pumping on regional groundwater-flow paths, 2005 and 2010, and areas contributing recharge to discharging wells, 1990–2010, in the vicinity of North Penn Area 7 Superfund site, Montgomery County, Pennsylvania Effects of changes in pumping on regional groundwater-flow paths, 2005 and 2010, and areas contributing recharge to discharging wells, 1990–2010, in the vicinity of North Penn Area 7 Superfund site, Montgomery County, Pennsylvania

A previously developed regional groundwater flow model was used to simulate the effects of changes in pumping rates on groundwater-flow paths and extent of recharge discharging to wells for a contaminated fractured bedrock aquifer in southeastern Pennsylvania. Groundwater in the vicinity of the North Penn Area 7 Superfund site, Montgomery County, Pennsylvania, was found to be...
Authors
Lisa Senior, Daniel J. Goode
By
Water Resources Mission Area, Pennsylvania Water Science Center

Baseline assessment of groundwater quality in Wayne County, Pennsylvania, 2014 Baseline assessment of groundwater quality in Wayne County, Pennsylvania, 2014

The Devonian-age Marcellus Shale and the Ordovician-age Utica Shale, geologic formations which have potential for natural gas development, underlie Wayne County and neighboring counties in northeastern Pennsylvania. In 2014, the U.S. Geological Survey, in cooperation with the Wayne Conservation District, conducted a study to assess baseline shallow groundwater quality in bedrock aquifers...
Authors
Lisa Senior, III Cravotta, Ronald Sloto
By
Water Resources Mission Area, Pennsylvania Water Science Center

Web Tools

Chester County (Pennsylvania) Monitoring Networks Chester County (Pennsylvania) Monitoring Networks

Since 1969, the Pennsylvania Water Science Center has had a cooperative program with Chester County to measure and describe water resources. Cooperation has been primarily with the Chester County Water Resources Authority, with participation from the Chester County Health Department. The Chester County Monitoring Network web tool provides near real-time water data.
By
Pennsylvania Water Science Center

Pennsylvania Real-Time Water Quality Pennsylvania Real-Time Water Quality

Real-time computed concentrations of water-quality constituents such as suspended sediment and fecal coliform bacteria are calculated using ordinary least squares regression models. The results of these models, along with direct water-quality measurements, can be viewed here as time-series graphs, or downloaded as tabular data.
By
Pennsylvania Water Science Center
USGS at the Pennsylvania Groundwater Symposium

USGS at the Pennsylvania Groundwater Symposium

Penn State Extension and the Pennsylvania Department of Environmental Protection, along with numerous other sponsors, hosted the annual Pennsylvania...

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Water Quality of Domestic Wells in Marcellus Shale Region

Water Quality of Domestic Wells in Marcellus Shale Region

A new USGS study, in cooperation with the Pennsylvania Geological Survey, identifies factors affecting the quality of groundwater used for domestic...

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USGS Characterizes Flow Paths for Movement of PFAS in Groundwater in Southeastern Pennsylvania

USGS Characterizes Flow Paths for Movement of PFAS in Groundwater in Southeastern Pennsylvania

A USGS study characterized groundwater flow paths from possible PFAS sources at three former and active military facilities in southeastern...

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Baseline Groundwater Quality Studies Find Naturally Occurring Methane in Northeastern Pennsylvania

Baseline Groundwater Quality Studies Find Naturally Occurring Methane in Northeastern Pennsylvania

Well-water tested in Wayne and Pike counties contains low-to-moderate concentrations of naturally occurring methane, according to new studies by the U...

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Science and Products

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

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 counties...
By
Pennsylvania Water Science Center
Contaminants in groundwater near former Navy bases in southeastern Pennsylvania

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 counties...
Learn More
Photo of pipe next to trench in rolling hills, Lycoming County PA

Shale Gas and Water Resources in Pennsylvania

USGS and partner scientists are investigating water availability, use, quality, and ecology associated with development of shale-gas energy resources in Pennsylvania.
By
Pennsylvania Water Science Center
Shale Gas and Water Resources in Pennsylvania

Shale Gas and Water Resources in Pennsylvania

USGS and partner scientists are investigating water availability, use, quality, and ecology associated with development of shale-gas energy resources in Pennsylvania.
Learn More
Collecting blanks for PFAS from freshly decontaminated equipment.

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.
By
Pennsylvania Water Science Center
Hydrologic and Water Quality Studies of PFAS in Pennsylvania

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.
Learn More
Photograph of road cut showing fractured sedimentary rocks

Contaminants in Groundwater near Superfund sites in Pennsylvania

USGS has investigated groundwater flow and contaminant transport in the vicinity of Superfund and other hazardous-waste sites in Pennsylvania, in cooperation with EPA. Additional cooperative support has been provided by the U.S. Department of Defense, National Park Service, Pennsylvania Department of Environmental Protection, Philadelphia, Bucks, Chester, and Montgomery Counties, and local...
By
Pennsylvania Water Science Center
Contaminants in Groundwater near Superfund sites in Pennsylvania

Contaminants in Groundwater near Superfund sites in Pennsylvania

USGS has investigated groundwater flow and contaminant transport in the vicinity of Superfund and other hazardous-waste sites in Pennsylvania, in cooperation with EPA. Additional cooperative support has been provided by the U.S. Department of Defense, National Park Service, Pennsylvania Department of Environmental Protection, Philadelphia, Bucks, Chester, and Montgomery Counties, and local...
Learn More
Screenshot of Chester County (PA) Monitoring Network web app

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.
By
Pennsylvania Water Science Center
Chester County, Pennsylvania

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
Farms, forests and rolling hills in Lycoming County, PA

Regional Synthesis of Groundwater Quality in Domestic Supply Wells in Northeast and North Central Pennsylvania

USGS synthesized groundwater quality measurements in wells to characterize regional chemical characteristics of aquifers used for domestic supply in northeast and north central Pennsylvania.
By
Pennsylvania Water Science Center
Regional Synthesis of Groundwater Quality in Domestic Supply Wells in Northeast and North Central Pennsylvania

Regional Synthesis of Groundwater Quality in Domestic Supply Wells in Northeast and North Central Pennsylvania

USGS synthesized groundwater quality measurements in wells to characterize regional chemical characteristics of aquifers used for domestic supply in northeast and north central Pennsylvania.
Learn More
Map of baseline groundwater quality assessments in Pennsylvania

Groundwater Quality of Domestic Supply Wells in Pennsylvania

Most rural residents in Pennsylvania use groundwater from domestic supply wells for drinking, cleaning and other purposes. Some groundwater samples have been analyzed for private purposes, but those results generally are not readily available to the public. Many of the publicly available water-quality samples from rural areas were collected more than 30 years ago. Quality-assured groundwater...
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Pennsylvania Water Science Center
Groundwater Quality of Domestic Supply Wells in Pennsylvania

Groundwater Quality of Domestic Supply Wells in Pennsylvania

Most rural residents in Pennsylvania use groundwater from domestic supply wells for drinking, cleaning and other purposes. Some groundwater samples have been analyzed for private purposes, but those results generally are not readily available to the public. Many of the publicly available water-quality samples from rural areas were collected more than 30 years ago. Quality-assured groundwater...
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Pre-2013 Bibliography of USGS publications - Chester County, Pennsylvania (Archive)

This is an Archive. A bibliography of USGS publications for Chester County, Pennsylvania, Pre-2013. Pre-2013 Publications available from the USGS Publications Warehouse are on the "Publications" tab. Other publications listed below are not, or in some cases are only partially available at the Publications Warehouse.
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Pennsylvania Water Science Center
Pre-2013 Bibliography of USGS publications - Chester County, Pennsylvania (Archive)

Pre-2013 Bibliography of USGS publications - Chester County, Pennsylvania (Archive)

This is an Archive. A bibliography of USGS publications for Chester County, Pennsylvania, Pre-2013. Pre-2013 Publications available from the USGS Publications Warehouse are on the "Publications" tab. Other publications listed below are not, or in some cases are only partially available at the Publications Warehouse.
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Map of potential radon exposure from groundwater and indoor air in Pennsylvania

Evaluation of Radon in Groundwater and Indoor Air in Pennsylvania

Existing groundwater and indoor air radon-222, hereafter referred to as "radon", concentrations were aggregated and evaluated for 16 geologic units throughout the state of Pennsylvania to provide a better understanding of potential human exposure to radon.
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Pennsylvania Water Science Center
Evaluation of Radon in Groundwater and Indoor Air in Pennsylvania

Evaluation of Radon in Groundwater and Indoor Air in Pennsylvania

Existing groundwater and indoor air radon-222, hereafter referred to as "radon", concentrations were aggregated and evaluated for 16 geologic units throughout the state of Pennsylvania to provide a better understanding of potential human exposure to radon.
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Water-quality data for selected small tributaries to the Upper Delaware Scenic and Recreational River, Pennsylvania and New York, 2012-2015 Water-quality data for selected small tributaries to the Upper Delaware Scenic and Recreational River, Pennsylvania and New York, 2012-2015

The U.S. Geological Survey (USGS) collected stream samples at 19 sites in tributaries to the Upper Delaware Scenic and Recreational River during 2012-15 in cooperation with the National Park Service (NPS) through the USGS-NPS Water-Quality Partnership to provide data on existing water-quality in small watersheds not previously characterized and where there was potential for...
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National Water Quality Program, Pennsylvania Water Science Center

Optical measurements for surface water samples collected within the Neshaminy Creek basin during November 2021 Optical measurements for surface water samples collected within the Neshaminy Creek basin during November 2021

Here we report optical data collected as part of a collaborative study between USGS Pennsylvania Water Science Center, Pennsylvania Department of Environmental Protection and Water Mission Area Proxies Project. The optical measurements reported here were collected to aide in the characterization of water sources and mixtures and establish proxies (surrogates) for per- and poly...
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California Water Science Center

Altitude of selected beds and inferred faults in boreholes as identified from geophysical logs at Valmont TCE Site, Luzerne County, Pennsylvania Altitude of selected beds and inferred faults in boreholes as identified from geophysical logs at Valmont TCE Site, Luzerne County, Pennsylvania

This dataset contains altitudes of selected beds and inferred faults in boreholes within an area of interest determined by the U.S. Environmental Protection Agency (EPA) at the Valmont TCE Superfund site in Luzerne County, Pennsylvania. The selected beds correspond to sections of borehole geophysical logs with elevated natural gamma activity as described in the U.S. Geological Survey...
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Pennsylvania Water Science Center

Data compilation for regional synthesis of chemical characteristics of groundwater used for domestic supply in north-east and north-central Pennsylvania Data compilation for regional synthesis of chemical characteristics of groundwater used for domestic supply in north-east and north-central Pennsylvania

Groundwater quality data for 472 domestic well-water samples were retrieved from the USGS National Water Information System (NWIS) database and combined with descriptive information on the sampled well locations. The NWIS data for a sample, collected on the selected date, were averaged into a single record (one per well), and rounded according to USGS protocols. For evaluation and...
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Pennsylvania Water Science Center

Water-level data and selected field notes for aquifer-interval-isolation tests at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylvania, 2018-19 (ver. 2.0, January 2024) Water-level data and selected field notes for aquifer-interval-isolation tests at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylvania, 2018-19 (ver. 2.0, January 2024)

The U.S. Geological Survey (USGS) conducted aquifer interval isolation (packer) tests of discrete water-bearing zones using straddle packers in 13 wells in Northampton, Warminster, and Warwick Townships and Ivyland Borough, Bucks County, Pennsylvania during 2018-19 to support detailed groundwater investigations at and near the former Naval Air Warfare Center (NAWC) Warminster, where...
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Pennsylvania Water Science Center

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 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...
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Pennsylvania Water Science Center

MODFLOW 6 and MODPATH 7 model data sets used to evaluate groundwater flow in the vicinity of Horsham and Warminster, Bucks and Montgomery Counties, Pennsylvania-Preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017 MODFLOW 6 and MODPATH 7 model data sets used to evaluate groundwater flow in the vicinity of Horsham and Warminster, Bucks and Montgomery Counties, Pennsylvania-Preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017

In cooperation with the U.S. Navy, USGS developed and calibrated a numerical MODFLOW 6 model to simulate regional groundwater flow under selected conditions during 1999-2017 at and near the former Willow Grove Naval Air Station Joint Reserve Base in Horsham, Montgomery County and the former Naval Air Warfare Center Warminster in Bucks County, Pennsylvania. The model simulations provide...
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Pennsylvania Water Science Center

Field properties and results of laboratory analysis of groundwater samples collected from 79 wells in Pike County, Pennsylvania, 1982-2015 Field properties and results of laboratory analysis of groundwater samples collected from 79 wells in Pike County, Pennsylvania, 1982-2015

Water-quality data for groundwater samples collected by the U.S. Geological Survey from 79 wells in Pike County, Pennsylvania, 1982-2015. Data consist of field properties and results of laboratory analysis for concentrations of inorganic constituents, dissolved gases (methane, ethane and propane), radon-222, gross alpha and beta radioactivity, radium-226, and volatile organic compounds...
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Pennsylvania Water Science Center

Data for regression models developed to estimate fecal coliform concentrations at five stream sites, Chester County, Pennsylvania (2017) Data for regression models developed to estimate fecal coliform concentrations at five stream sites, Chester County, Pennsylvania (2017)

This data release supports the following publication: Senior, Lisa A., 2017, Estimated Fecal Coliform Bacteria Concentrations Using Near Real-Time Water-Quality and Streamflow Data From Five Stream Sites in Chester County, Pennsylvania, 200716: U.S. Geological Survey Scientific-Investigations Report 20175075 (https://doi.org/10.3133/sir20175075). The U.S. Geological Survey (USGS), in...
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Pennsylvania Water Science Center

Maps showing aeromagnetic data and interpretation for the Kalmiopsis Wilderness, southwestern Oregon Maps showing aeromagnetic data and interpretation for the Kalmiopsis Wilderness, southwestern Oregon

The distinctive magnetic properties of the major rock types in the Kalmiopsis Wilderness of southwestern Oregon facilitate interpretation of aeromagenetic data. The region is composed of tectonic slices of magnetic ultramafic, gabboric, and other ophiolitic rocks faulted against the realitively nonmagnetic Dothan Formation, the equivalent of the Franciscan Complex of Western California...

Mineral resource potential of the Wild Rogue Wilderness (NF105), Coos and Curry Counties, Oregon Mineral resource potential of the Wild Rogue Wilderness (NF105), Coos and Curry Counties, Oregon

No abstract available.

Map and interpretation of aeromagnetic data for the Wild Rogue Wilderness, Coos and Curry Counties, Oregon Map and interpretation of aeromagnetic data for the Wild Rogue Wilderness, Coos and Curry Counties, Oregon

The Wild Rogue Wilderness is located in Coos and Curry Counties, southwestern Oregon and covers part of the Bone Mountain, Marial, and Agness 15-minute quadrangles (fig. 1). It is an elongate area 19 mi by 1 to 3 mi (31 km by 1.3 to 5 km) and covers approximately 35,818 acres extending from the town of Agness to Mount Bolivar. The mapped geology of the Wild Rogue Wilderness (Gray and...
photograph of hillside with ferns, brown leaves, and exposed rock with large pebbles and openings between rock layers
Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania
Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania
photograph of hillside with ferns, brown leaves, and exposed rock with large pebbles and openings between rock layers

Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania

Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania

Exposed Hellam Conglomerate member of the Chickies Quartzite at East Mount Zion Superfund Site, York County, Pennsylvania. (Lisa Senior, USGS)

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Pennsylvania Water Science Center
photograph of hillside with ferns, brown leaves, and exposed rock with large pebbles and openings between rock layers

Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania

Rock, partings, ferns, hillside, Mt. Zion site, Pennsylvania

Exposed Hellam Conglomerate member of the Chickies Quartzite at East Mount Zion Superfund Site, York County, Pennsylvania. (Lisa Senior, USGS)

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Pennsylvania Water Science Center
photograph of gray rock with embedded pebbles sitting in a bed of green and red leaves and blue flowers
Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania
Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania
photograph of gray rock with embedded pebbles sitting in a bed of green and red leaves and blue flowers

Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania

Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania

Boulder of Hellam Conglomerate member of the Chickies Quartzite at East Mount Zion Superfund Site, York County, Pennsylvania. (Lisa Senior, USGS)

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Pennsylvania Water Science Center
photograph of gray rock with embedded pebbles sitting in a bed of green and red leaves and blue flowers

Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania

Quartzite rock, flowering ground cover, East Mount Zion site, York County, Pennsylvania

Boulder of Hellam Conglomerate member of the Chickies Quartzite at East Mount Zion Superfund Site, York County, Pennsylvania. (Lisa Senior, USGS)

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Pennsylvania Water Science Center
Fairmount Waterworks, Philadelphia, PA
Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA
Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA
Fairmount Waterworks, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Aquarium Drive, Philadelphia, Philadelphia County, PA. View looking northeast at waterworks from across Schuylkill River. Photo taken December, 1984.

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Water Resources Mission Area, Pennsylvania Water Science Center
Fairmount Waterworks, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA

Fairmount Waterworks, east bank of Schuylkill River, Aquarium Drive, Philadelphia, Philadelphia County, PA. View looking northeast at waterworks from across Schuylkill River. Photo taken December, 1984.

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Water Resources Mission Area, Pennsylvania Water Science Center
Filter Total Items: 42

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 Senior, Dennis W. Risser, Daniel J. Goode, Philip H. Bird
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Water Resources Mission Area, Pennsylvania Water Science Center

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 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...
Authors
Emily Woodward, Lisa Senior, Jacob Fleck, Larry B. Barber, Angela Hansen, Joseph Duris
By
Water Resources Mission Area, California Water Science Center, Pennsylvania Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

Results of 2018–19 water-quality and hydraulic characterization of aquifer intervals using packer tests and preliminary geophysical-log correlations for selected boreholes at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylva Results of 2018–19 water-quality and hydraulic characterization of aquifer intervals using packer tests and preliminary geophysical-log correlations for selected boreholes at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylva

The U.S. Geological Survey (USGS) collected data on the vertical distribution of hydraulic head, specific capacity, and water quality using aquifer-interval-isolation tests and other vertical profiling methods in 15 boreholes completed in fractured sedimentary bedrock in Northampton, Warminster, and Warwick Townships, Bucks County, Pennsylvania during 2018–19. This work was done, in...
Authors
Lisa Senior, Alex Fiore
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Water Resources Mission Area, New Jersey Water Science Center, Pennsylvania Water Science Center

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

Factors affecting groundwater quality used for domestic supply within the Marcellus Shale footprint in north-central and north-east Pennsylvania are identified using a combination of spatial, statistical, and geochemical modeling. Untreated groundwater, sampled during 2011–2017 from 472 domestic wells within the study area, exhibited wide ranges in pH (4.5–9.3), total dissolved solids...
Authors
Charles A. Cravotta, Lisa Senior, Matthew Conlon
By
Water Resources Mission Area, Pennsylvania Water Science Center

Geophysical and video logs of selected wells at and near the former Naval Air Warfare Center Warminster, Bucks County, Pennsylvania, 2017-19 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- and polyfluoroalkyl substances (PFAS)...
Authors
Lisa Senior, J. Anderson, Philip Bird
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Water Resources Mission Area, Pennsylvania Water Science Center

Hydrogeologic framework, water levels, and selected contaminant concentrations at Valmont TCE Superfund Site, Luzerne County, Pennsylvania, 2020 Hydrogeologic framework, water levels, and selected contaminant concentrations at Valmont TCE Superfund Site, Luzerne County, Pennsylvania, 2020

The Valmont TCE Superfund Site, Luzerne County, Pennsylvania is underlain by fractured and folded sandstones and shales of the Pottsville and Mauch Chunk Formations, which form a fractured-rock aquifer recharged locally by precipitation. Industrial activities at the former Chromatex Plant resulted in trichloroethene (TCE) contamination of groundwater at and near the facility, which was...
Authors
Lisa Senior, Alex Fiore, Philip Bird
By
Water Resources Mission Area, New Jersey Water Science Center, Pennsylvania Water Science Center

Groundwater quality in relation to drinking water health standards and hydrogeologic and geochemical characteristics for 47 domestic wells in Potter County, Pennsylvania, 2017 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 properties that could be evaluated in...
Authors
Daniel Galeone, Charles Cravotta, Dennis Risser
By
Water Resources Mission Area, Pennsylvania Water Science Center

Groundwater withdrawals and regional flow paths at and near Willow Grove and Warminster, Pennsylvania—Data compilation and preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017 Groundwater withdrawals and regional flow paths at and near Willow Grove and Warminster, Pennsylvania—Data compilation and preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017

In 2014, groundwater samples from residential and public supply wells in the vicinity of two former U.S. Navy bases at Willow Grove and Warminster, and an active Air National Guard Station at Horsham, Bucks and Montgomery Counties, Pennsylvania, were found to have concentrations of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), which are per- and polyfluoroalkyl...
Authors
Daniel Goode, Lisa Senior
By
Water Resources Mission Area, Pennsylvania Water Science Center

Baseline assessment of groundwater quality in Pike County, Pennsylvania, 2015 Baseline assessment of groundwater quality in Pike County, Pennsylvania, 2015

The Devonian-age Marcellus Shale and the Ordovician-age Utica Shale, which have the potential for natural gas development, underlie Pike County and neighboring counties in northeastern Pennsylvania. In 2015, the U.S. Geological Survey, in cooperation with the Pike County Conservation District, conducted a study that expanded on a previous more limited 2012 study to assess baseline...
Authors
Lisa Senior, Charles A. Cravotta
By
Water Resources Mission Area, Pennsylvania Water Science Center

Estimated fecal coliform bacteria concentrations using near real-time continuous water-quality and streamflow data from five stream sites in Chester County, Pennsylvania, 2007–16 Estimated fecal coliform bacteria concentrations using near real-time continuous water-quality and streamflow data from five stream sites in Chester County, Pennsylvania, 2007–16

Several streams used for recreational activities, such as fishing, swimming, and boating, in Chester County, Pennsylvania, are known to have periodic elevated concentrations of fecal coliform bacteria, a type of bacteria used to indicate the potential presence of fecally related pathogens that may pose health risks to humans exposed through water contact. The availability of near real...
Authors
Lisa Senior
By
Water Resources Mission Area, Pennsylvania Water Science Center

Effects of changes in pumping on regional groundwater-flow paths, 2005 and 2010, and areas contributing recharge to discharging wells, 1990–2010, in the vicinity of North Penn Area 7 Superfund site, Montgomery County, Pennsylvania Effects of changes in pumping on regional groundwater-flow paths, 2005 and 2010, and areas contributing recharge to discharging wells, 1990–2010, in the vicinity of North Penn Area 7 Superfund site, Montgomery County, Pennsylvania

A previously developed regional groundwater flow model was used to simulate the effects of changes in pumping rates on groundwater-flow paths and extent of recharge discharging to wells for a contaminated fractured bedrock aquifer in southeastern Pennsylvania. Groundwater in the vicinity of the North Penn Area 7 Superfund site, Montgomery County, Pennsylvania, was found to be...
Authors
Lisa Senior, Daniel J. Goode
By
Water Resources Mission Area, Pennsylvania Water Science Center

Baseline assessment of groundwater quality in Wayne County, Pennsylvania, 2014 Baseline assessment of groundwater quality in Wayne County, Pennsylvania, 2014

The Devonian-age Marcellus Shale and the Ordovician-age Utica Shale, geologic formations which have potential for natural gas development, underlie Wayne County and neighboring counties in northeastern Pennsylvania. In 2014, the U.S. Geological Survey, in cooperation with the Wayne Conservation District, conducted a study to assess baseline shallow groundwater quality in bedrock aquifers...
Authors
Lisa Senior, III Cravotta, Ronald Sloto
By
Water Resources Mission Area, Pennsylvania Water Science Center

Web Tools

Chester County (Pennsylvania) Monitoring Networks Chester County (Pennsylvania) Monitoring Networks

Since 1969, the Pennsylvania Water Science Center has had a cooperative program with Chester County to measure and describe water resources. Cooperation has been primarily with the Chester County Water Resources Authority, with participation from the Chester County Health Department. The Chester County Monitoring Network web tool provides near real-time water data.
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Pennsylvania Water Science Center

Pennsylvania Real-Time Water Quality Pennsylvania Real-Time Water Quality

Real-time computed concentrations of water-quality constituents such as suspended sediment and fecal coliform bacteria are calculated using ordinary least squares regression models. The results of these models, along with direct water-quality measurements, can be viewed here as time-series graphs, or downloaded as tabular data.
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Pennsylvania Water Science Center
USGS at the Pennsylvania Groundwater Symposium

USGS at the Pennsylvania Groundwater Symposium

Penn State Extension and the Pennsylvania Department of Environmental Protection, along with numerous other sponsors, hosted the annual Pennsylvania...

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Water Quality of Domestic Wells in Marcellus Shale Region

Water Quality of Domestic Wells in Marcellus Shale Region

A new USGS study, in cooperation with the Pennsylvania Geological Survey, identifies factors affecting the quality of groundwater used for domestic...

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USGS Characterizes Flow Paths for Movement of PFAS in Groundwater in Southeastern Pennsylvania

USGS Characterizes Flow Paths for Movement of PFAS in Groundwater in Southeastern Pennsylvania

A USGS study characterized groundwater flow paths from possible PFAS sources at three former and active military facilities in southeastern...

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Baseline Groundwater Quality Studies Find Naturally Occurring Methane in Northeastern Pennsylvania

Baseline Groundwater Quality Studies Find Naturally Occurring Methane in Northeastern Pennsylvania

Well-water tested in Wayne and Pike counties contains low-to-moderate concentrations of naturally occurring methane, according to new studies by the U...

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