Unified Interior Regions

Region 1: North Atlantic-Appalachian

Our Science Centers

Our Science Centers

The NAA Region has 15 Science Centers spanning 14 NE States and Washington, DC. The Centers conduct interdisciplinary biologic, geologic, hydrologic, and energy monitoring and research addressing natural resource issues facing our nation.

Learn More

March Photo Contest

March Photo Contest

Check out the winning photographs in the March 2021 Photo Contest! Categories include People, USGS at Work, Where We Work, and Honorable Mention

See Photos

Regions L2 Landing Page Tabs

Filter Total Items: 1,148
Date published: June 16, 2020
Status: Active

MD-DE-DC WSC Seminar Series

Welcome to the MD-DE-DC Water Science Center Seminar Series

Here, you will find a list of upcoming public seminars taking place** at the USGS Maryland, Delaware-District of Columbia Water Science Center.

If you are new to our site, then welcome! Please take a few minutes to look around once you've taken care of business on this page. If you want to be included in...

Date published: June 16, 2020
Status: Active

Coastal Change Hazards

Natural processes such as waves, tides, and weather, continually change coastal landscapes. The integrity of coastal homes, businesses, and infrastructure can be threatened by hazards associated with event-driven changes, such as extreme storms and their impacts on beach and dune erosion, or longer-term, cumulative...

Date published: June 12, 2020
Status: Active

MD-DE-DC WSC Water Quality Capabilities

Water quality is a measure of the suitability of water for a particular use based on selected physical, chemical, and biological characteristics. Water-quality monitoring is used to help water-resource managers understand and avert potential negative effects of man-made and natural stresses on water resources, evaluate trends, and compare to water-quality criteria.

One of our primary...

Date published: June 8, 2020
Status: Active

Tectonic Processes

Geophysical research utilizes analytical and numerical tools to quantify tectonic processes. Basic geophysical research lays the ground for understanding of Earth processes, which affect natural hazards and resource estimation.
 

Contacts: Uri ten Brink
Date published: May 19, 2020
Status: Active

DETAILED AQUIFER MAPPING OF THE SPRINGVILLE, N.Y. AREA Erie, Cattaraugus, and Wyoming Counties, New York

Introduction Public-water systems at Springville and Yorkshire/Delavan, N.Y. along Cattaraugus Creek draw from local groundwater resources and serve about 5,500 people (U.S. EPA SDWIS database). The remainder of the population obtains water from domestic wells, many of them completed in glacial aquifers. A Cattaraugus Creek tributary valley (Buttermilk Creek) to the south is the site of the...

Date published: May 19, 2020
Status: Active

DETAILED AQUIFER MAPPING OF THE MALONE, N.Y. AREA (Adirondack foothills and St. Lawrence lowlands transect) Franklin County, New York

Introduction The Village of Malone, Franklin County, New York is located along the Salmon River where it exits the northern foothills of the Adirondack Mountains and flows northward across the St. Lawrence Lowlands until its confluence with the St. Lawrence River. The public water supply of the Village of Malone serves a population of 13,200 (U.S. EPA SDWIS database), which includes three...

Date published: May 15, 2020
Status: Active

MD-DE-DC WSC Surface Water Capabilities

As an integrated part of the WSC, the Surface Water Team monitors and conducts investigative research to describe and improve our region's understanding of extreme hydrologic events - droughts, floods and flood hazards, and coastal or bay storm surge and inundation. They also facilitate measurement stream stages, streamflow, and computes daily streamflow at locations in Maryland, Delaware, and...

Date published: May 7, 2020
Status: Active

Enabling AI for citizen science in fish biology

Artificial Intelligence (AI) is revolutionizing ecology and conservation by enabling species recognition from photos and videos. Our project evaluates the capacity to expand AI for individual fish recognition for population assessment. The success of this effort would facilitate fisheries analysis at an unprecedented scale by engaging anglers and citizen scientists in imagery collection. This...

Date published: May 7, 2020
Status: Completed

New information on chemical and physical characteristics of streams and floodplains across the Chesapeake Bay and Delaware River watersheds

Issue: Improving stream health is an important outcome of the Chesapeake Bay Program partnership. Stream conditions are important for recreational fisheries, and mitigating the amount of nutrients, sediment, and contaminants delivered to the Bay.

Contacts: Gregory Noe
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 4, 2020
Status: Active

Hazard and Risk of Anticoagulant Rodenticides to Predatory and Scavenging Wildlife

Invasive mammalian predators are the most damaging group of animals affecting global biodiversity.  When introduced on remote islands, alien rodent species can devastate local biota and have been linked to approximately 30% of all extinctions. In addition, rodents can also consume and spoil crops, and serve as disease vectors that affect humans.  Starting in the 20th century,...

Date published: May 4, 2020
Status: Active

An Analysis of Trends in the Magnitude of Floods in Urbanized Watersheds on Long Island, New York

Summary: This study aims to do a thorough analysis of trends in peak streamflows on Long Island. Reliable information about the magnitude and frequency of floods is essential for flood insurance studies, flood-plain management, and the design of transportation and water-conveyance infrastructure, such as roads, bridges, culverts, dams, and levees. Federal, State, regional, and local officials...

Filter Total Items: 482
Date published: July 8, 2020

Physiological changes in response to salinity and cortisol treatment in Atlantic sturgeon

The dataset are the results of studies examining the osmoregulatory physiology of Atlantic sturgeon (Acipenser oxyrinchus). Two experiments were conducted on physiological responses to salinity change, and another experiment on the effects of cortisol treatment on osmoregulation.

Date published: July 8, 2020

Streamflow Magnitude, Water Temperature, and Water Chemistry in Robinson Forest, Breathitt County, Kentucky (1971-2018)

Robinson Forest, in eastern Kentucky, is a research forest owned and operated by the University of Kentucky (UK) since the 1920s. The UK Department of Forestry and Natural Resources began collecting streamflow and water-chemistry data in the forest starting with weirs at Falling Rock and Little Millseat in 1971, and supplemented by weirs at Coles Fork and Clemons Fork in 1973. This digi

Date published: July 8, 2020

Chemical alteration index values and rare earth element data and expected ranges for regolith overlying the Stewartsville pluton, Virginia

This dataset contains whole major element geochemical data used to calculate values of the chemical alteration index (CIA), data for Nd, Sm, Y, and total REE and expected ranges for total REEY for samples of regolith overlying the Stewartsville pluton, Virginia. The southeastern United States was first identified as prospective for regolith-hosted REE deposits based on the recognit

Date published: July 8, 2020

Phytoplankton Community Composition in Western Lake Erie Basin and Northeast Ohio, 2016-2018

This dataset contains a tabular file of phytoplankton abundance and community composition analysis in samples collected from two sites in the Western Lake Erie Basin and one inland lake site in northeast Ohio. Samples were processed by the Ohio Water Microbiology Lab of the U.S. Geological Survey (USGS) and analyzed by BSA Environmental Inc. and during federal fiscal years 2016-2018. The data...

Date published: July 8, 2020

Precipitation and Precipitation Chemistry in Robinson Forest, Breathitt County, Kentucky (1971-2018)

Robinson Forest, in eastern Kentucky, is a research forest owned and operated by the University of Kentucky (UK) since the 1920s. The UK Department of Forestry and Natural Resources began collecting precipitation and precipitation chemistry data in the forest starting with one weather station at the Robinson Forest Camp in 1971, and followed by several additional stations in the mid-199

Date published: July 8, 2020

Air temperature in Robinson Forest, Breathitt County, Kentucky (1971-2018)

Robinson Forest, in eastern Kentucky, is a research forest owned and operated by the University of Kentucky (UK) since the 1920s. The UK Department of Forestry and Natural Resources began collecting air temperature data at the Robinson Forest Camp in 1971. This digital dataset includes information about the weather station where these data were collected, and how these data were process

Date published: July 8, 2020

Chesapeake Bay River Input Monitoring Network 1985-2019: Annual loads

Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the Chesapeake Bay River Input Monitoring Network (RIM) stations for the period 1985 through 2019. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression appro

Date published: July 8, 2020

Chesapeake Bay River Input Monitoring Network 1985-2019: WRTDS input data

Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the Chesapeake Bay River Input Monitoring Network (RIM) stations for the period 1985 through 2019. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression appro

Date published: July 8, 2020

Chesapeake Bay River Input Monitoring Network 1985-2019: Average annual yields

Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the Chesapeake Bay River Input Monitoring Network (RIM) stations for the period 1985 through 2019. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression appro

Date published: July 7, 2020

Hydrologic simulations for Robinson Forest and Reclaimed Mineland Soils

Robinson Forest, in eastern Kentucky, is a research forest owned and operated by the University of Kentucky (UK) since the 1920s. The Forest is situated in a portion of eastern Kentucky that has undergone extensive resource extraction, including silvaculture and both underground and surface mining of coal. This site has been used to evaluate hydrologic process, stream permanence, a

Date published: July 1, 2020

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in May and June, 2015, U.S. Geological Survey Field Activity 2015-017-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary. The R/V Auk  visited 61 locations on Stellwagen Bank at which a customized Van Veen grab sampler equipped with a video camera and a CTD was deployed to collect sediment for grain-size analysis, seabed video imagery, and measurements of water column properties. 

Date published: July 1, 2020

Field blank and field replicate datasets for inorganic and organic compounds collected for the National Water Quality Network, water years 2013-17

The U.S. Geological Survey (USGS) National Water Quality Network - Rivers and Streams (NWQN) comprises 117 surface-water monitoring sites designed to track ambient water-quality conditions across the nation. This dataset includes field quality-control results (field blank and field replicate concentrations), along with the water-quality result of each associated surface-water sample

Filter Total Items: 15,993
Publication Thumbnail
Year Published: 2021

Estimation of annual indexes of abundance and trend from the American Woodcock singing-ground survey: Comparison of 4 models

Status and trends of American Woodcock Scolopax minor populations in the eastern and central US and Canada are monitored via a Singing-ground Survey , conducted just after sunset along roadsides in spring.  Annual analyses of the survey produce estimates of trend and annual indexes of abundance for 25 states and provinces, eastern and central...

Sauer, John R.; Link, William; Seamans, Mark E; Rau, Rebecca D.

Publication Thumbnail
Year Published: 2021

Potential Pb+2 mobilization, transport, and sequestration in shallow aquifers impacted by multiphase CO2 leakage: A natural analogue study from the Virgin River Basin in Southwest Utah

Geological carbon sequestration (GCS) is necessary to help meet emissions reduction goals, but groundwater contamination may occur if CO2 and/or brine were to leak out of deep storage formations into the shallow subsurface. For this study, a natural analogue was investigated: in the Virgin River Basin of southwest Utah, water with moderate...

Plampin, Michelle R.; Blondes, Madalyn S.; Sonnenthal, Eric; Craddock, William H.

Publication Thumbnail
Year Published: 2021

Comparative morphology of freshwater sculpin inhabiting different environmental conditions in the Chesapeake Bay headwaters

We compared body morphology of two freshwater sculpin taxa that inhabit distinct environmental conditions in the Chesapeake Bay watershed of eastern North America: Potomac sculpin (C. girardi, Robins; PS) and checkered sculpin (C. sp. cf. girardi; CS). Both taxa are endemic to the study area, but PS are more broadly distributed than CS...

Hitt, Nathaniel P.; Kessler, Karmann G.; Macmillan, Hannah Eisemann; Rogers, Karli M; Raesly, Richard L.

Publication Thumbnail
Year Published: 2021

Inclusion of pesticide transformation products is key to estimating pesticide exposures and effects in small U.S. streams

Improved analytical methods can quantify hundreds of pesticide transformation products (TPs), but understanding of TP occurrence and potential toxicity in aquatic ecosystems remains limited. We quantified 108 parent pesticides and 116 TPs in more than 3 700 samples from 442 small streams in mostly urban basins across five major regions of the...

Mahler, Barbara; Nowell, Lisa H.; Sandstrom, Mark W.; Bradley, Paul; Romanok, Kristin; Konrad, Christopher; Van Metre, Peter

Publication Thumbnail
Year Published: 2021

U.S. Geological Survey migratory bird science, 2020–21

Bird conservation as an endeavor engages a broad range of partners and a coordinated effort across State and Federal agencies, nongovernment organizations, universi­ties and, at times, international partnerships. To understand information needs and respond to the many challenges in bird conservation, U.S. Geological Survey (USGS) scien­tists...

Pearse, Aaron T.; Sherfy, Mark H.; Wimer, Mark; Khalil, Mona; Wiltermuth, Mark
Pearse, A.T., Sherfy, M.H., Wimer, M., Khalil, M., and Wiltermuth, M.T., 2021, U.S. Geological Survey migratory bird science, 2020–21: U.S. Geological Survey Circular 1480, 131 p., https://doi.org/10.3133/cir1480.

Publication Thumbnail
Year Published: 2021

Practical field survey operations for flood insurance rate maps

The U.S. Geological Survey assists the Federal Emergency Management Agency in its mission to identify flood hazards and zones for risk premiums for communities nationwide, by creating flood insurance rate maps through updating hydraulic models that use river geometry data. The data collected consist of elevations of river channels, banks, and...

Taylor, Nicholas J.; Simeone, Caelan E.
Taylor, N.J., and Simeone, C.E., 2021, Practical field survey operations for flood insurance rate maps: U.S. Geological Survey Open-File Report 2020–1146, 8 p., https://doi.org/10.3133/ofr20201146.

Publication Thumbnail
Year Published: 2021

Causes of delayed outbreak responses and their impacts on epidemic spread

Livestock diseases have devastating consequences economically, socially and politically across the globe. In certain systems, pathogens remain viable after host death, which enables residual transmissions from infected carcasses. Rapid culling and carcass disposal are well-established strategies for stamping out an outbreak and limiting its impact...

Tao, Y; Probert, William J M; Shea, Katriona; Runge, Michael C.; Lafferty, Kevin D.; Tildesley, Michael J.; Ferrari, Matthew J

Publication Thumbnail
Year Published: 2021

Molecular and isotopic gas composition of the Devonian Berea Sandstone and implications for gas evolution, eastern Kentucky

Since 2011, the Devonian Berea Sandstone in northeastern Kentucky has produced oil where thermal maturity studies indicate that likely source rocks, namely, the Devonian Ohio Shale and Mississippian Sunbury Shale, are thermally immature. Downdip, where source rocks are mature for oil, the Berea Sandstone and Ohio Shale primarily produce gas. To...

Parris, T. M.; Hackley, Paul C.; Greb, S. F.; Eble, C. F.

Publication Thumbnail
Year Published: 2021

Mineral commodity summaries 2021

IntroductionEach mineral commodity chapter of the 2021 edition of the U.S. Geological Survey (USGS) Mineral Commodity Summaries (MCS) includes information on events, trends, and issues for each mineral commodity as well as discussions and tabular presentations on domestic industry structure, Government programs, tariffs, 5-year salient statistics...

U.S. Geological Survey, 2021, Mineral commodity summaries 2021: U.S. Geological Survey, 200 p., https://doi.org/10.3133/mcs2021.

Publication Thumbnail
Year Published: 2021

Geochemical advances in Arctic Alaska oil typing - North Slope oil correlation and charge history

The Arctic Alaska petroleum province is geologically and geochemically complex. Mixed hydrocarbon charge from multiple source rocks and/or levels of thermal maturity is common within an individual oil pool. Biomarker and chemometric statistical analyses were used to correlate twenty-nine oils to five oil families derived from: (1) Triassic...

Botterell, Palma J.; Houseknecht, David W.; Lillis, Paul G.; Barbanti, Silvana M.; Dahl, Jeremy E.; Moldowan, J. Michael

Publication Thumbnail
Year Published: 2021

Using decision science for monitoring threatened western snowy plovers to inform recovery

Western Snowy Plovers (Charadrius nivosus nivosus) are federally listed under the US Endangered Species Act as Threatened. They occur along the US Pacific coastline and are threatened by habitat loss and destruction and excessive levels of predation and human disturbance. Populations have been monitored since the 1970s for distribution,...

Marcot, Bruce G.; Lyons, James; Elbert, Daniel C; Todd, Laura

Publication Thumbnail
Year Published: 2021

Re‐purposing groundwater flow models for age assessments ‐‐ important characteristics

Groundwater flow model construction is often time‐consuming and costly, with development ideally focused on a specific purpose, such as quantifying well capture from water bodies or providing flow fields for simulating advective transport. As environmental challenges evolve, the incentive to re‐purpose existing groundwater flow models may increase...

Juckem, Paul F.; Starn, J. Jeffrey

Filter Total Items: 64
USGS
April 26, 2016

Tests the null hypothesis that two samples of recoveries belong to the same bivariate distribution.

USGS
April 26, 2016

Computes estimates of survival and recovery rates for 2-age class band-recovery data.

USGS
August 12, 2015

Computes estimates of survival and capture probability for open capture-recapture models when sex is not allways known.

USGS
July 2, 2014

An R package to estimate nest abundance using a state-space superpopulation capture-recapture approach in which inference about detection proability is based on the age at first detection, as opposed to the sequence of re-detections in standard capture-recapture models.

OFR 2014-1003 frontcover
March 4, 2014

 

/media/files/hydrodssv01

 

Overview

The HyDroDSS is designed to provide water managers with risk-based information for balancing water-supply needs and aquatic-habitat protection goals to mitigate potential effects of hydrologic drought.

USGS
January 29, 2014

Generates capture-history data for given s,theta,p,c.

USGS science for a changing world logo
July 16, 2013

Overview

The Stochastic Empirical Loading and Dilution Model (SELDM) is designed to transform complex scientific data into meaningful information about the risk of adverse effects of runoff on receiving waters, the potential need for mitigation measures, and the potential effectiveness of such management measures for reducing these risks.

USGS
June 7, 2013

Computes estimates of species richness using large scale data.

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

USGS
December 11, 2011

Computes survival-movement, capture and recovery probabilities from multi-strata capture-recapture-recovery data.

FHWA-HEP-09-004 2009 cover
November 25, 2010

Overview

The highway-runoff database (HRDB) was developed to serve as a data warehouse for current and future highway-runoff data sets. The database can be used by transportation agencies and researchers as a data warehouse to document information about a data set, monitoring site(s), highway-runoff data (including precipitation, runoff, and event mean concentrations).

USGS science for a changing world logo
April 13, 2010

Overview

The SWQDM database application was developed by the U.S. Geological Survey in cooperation with the Federal Highway Administration for use in the analysis of regional and national hydrologic data sets. The surface-water quality data miner (SWQDM) database application was developed to coordinate use of NWIS Web, NWiz, and the Kendall-Theil Robust Line analysis software.

Filter Total Items: 1,718
Groundwater sampling along the shoreline of Academy Cove, Wickford, Rhode Island, February 9, 2021
February 9, 2021

Groundwater sampling, Wickford, Rhode Island

Groundwater sampling along the shoreline of Academy Cove, Wickford, Rhode Island, February 9, 2021

The water quality sample is being taken at Saugatuck River near Westport, CT 01209500
February 8, 2021

Taking the water quality sample

The water quality sample is being taken at Saugatuck River near Westport, CT 01209500.

The snowy gage at Indian River at Clinton, CT 01195100
February 8, 2021

The snowy streamgage

The snowy gage at Indian River,  Clinton, CT 01195100.

Average ice conditions, station 01194000, Eight Mile River at North Plain, Connecticut
February 4, 2021

Ice conditions, station 01194000, Eight Mile River at North Plain, CT

U.S. Geological Survey station 01194000, Eight Mile River at North Plain, Connecticut, February 4, 2021. The photograph represents average ice conditions during February 2021; some stations had almost no ice, some had 50 percent ice, and some had almost 100 percent ice.

Otter Brook State Park, Keene, New Hampshire
February 4, 2021

Otter Brook State Park, Keene, New Hampshire

Field team took advantage of a warmer winter day and stopped on their way between sites to eat a socially distanced lunch at Otter Brook State Park, managed by the Army Corps of Engineers.

Jennifer Lafayette sampling at 01208990 Saugatuck River in Redding, CT
February 3, 2021

Sampling at 01208990 Saugatuck River in Redding, CT

Jennifer Lafayette sampling at 01208990 Saugatuck River in Redding, CT

Photograph of a scuba diver in Double Keyhole Cave, Tampa Bay, FL
December 31, 2020

Double Keyhole Cave Diving

Bobby Scharping, a post-doctoral scholar working with scientists from the USGS (John Pohlman) and the Woods Hole Oceanographic Institution (Stefan Sievert and Matt Charette), documents the environmental conditions where he as emplaced an acoustic current meter and multi-sensor package 90 feet underwater AND underground in Double Keyhole Cave near the coastline of Tampa Bay

...
Jon Cohl ADCP at 01457400 Musconetcong Riegelsville
December 30, 2020

Jon Cohl ADCP at 01457400 Musconetcong Riegelsville

Photo Contest Winner | January 2021 | People
Jon Cohl ADCP at 01457400 Musconetcong Riegelsville

Teaching techs how to count clicks
November 19, 2020

Teaching techs how to count clicks

Photo Contest Winner | January 2021 | Honorable Mention 1
Teaching young techs how to count clicks

Filter Total Items: 262
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

TNMCorps Mapping Challenge: City/Town Halls in ME, NH, VT
July 9, 2020

Over 80 points have been added since last week!  Keep up the good work!

A male Blue-winged Teal in flight
July 7, 2020

Birds bring joy merely by their presence, from their bold colors and majestic songs to their grace as they glide through the sky. Birds contribute more than beauty to the environment and society. Many plants depend on hummingbirds and other species to pollinate them. Hawks and owls prey on rodents and other pests. Fruit- and grain-eating birds help spread plants’ seeds.

TNMCorps Mapping Challenge: City/Town Halls in ME, NH, VT
July 2, 2020

This challenge is seeing some progress with the northwestern corner of VT filling in!

Gage at LaVale, MD
July 1, 2020

There's a lot of talent at the Maryland, Delaware, Washington, DC Water Science Center!

We’ve created a series of websites, thematically named to characterize our work as our “Capabilities”, working interdependently with a diverse array of cooperative partners, the scientists, technicians, and support staff work tirelessly to produce the high-quality output for which the USGS is world renown.

TNMCorps Mapping Challenge: City/Town Halls in ME, NH, VT
June 25, 2020

Approximately 80 edits have come in since this challenge was launched! This includes ~70 new points! Nice work!

Dead Run, a typical urban creek
June 24, 2020

Dirt, sand, and other particulate material on parking lots and streets is washing off into urban streams, reports a new study by the U.S. Geological Survey Regional Stream Quality Assessment. The study used novel particle tracers to determine that particles washed from pavement made up almost half of the streambed sediment in parts of Dead Run, an urban stream in the Baltimore area.

A bee with pollen on it
June 22, 2020

Pollinators in the form of bees, birds, butterflies, bats and beetles provide vital but often invisible services, from supporting terrestrial wildlife and plant communities, to supporting healthy watersheds.

TNMCorps Mapping Challenge: City/Town Halls in ME, NH, VT NEW
June 19, 2020

TNMCorps Mapping Challenges head to New England with a new challenge for city/town halls in Maine, New Hampshire, and Vermont!

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.

Map of simulated flow paths from a model of regional groundwater flow
June 4, 2020

A USGS study characterized groundwater flow paths from possible PFAS sources at three former and active military facilities in southeastern Pennsylvania. The new research will help federal, state and local officials, water resource managers and the public as they work to address PFAS contamination in groundwater and surface water used for private and public water supply.

Filter Total Items: 590