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

August and September Photo Contests

August and September Photo Contests

Check out the winning photographs in the August and September 2021 Photo Contests! Categories include People, USGS at Work, Where We Work, and Honorable Mention.

See Photos

Regions L2 Landing Page Tabs

Filter Total Items: 1,126
Date published: August 13, 2015
Status: Active

National Water Quality Assessment Program -- Water-Quality Assessments of Principal Aquifers

A major focus of the NAWQA Program in its second decade (2002-2013) is on regional- and national-scale assessments of groundwater-quality status and trends in principal aquifers. The U.S. Geological Survey Office of Groundwater has identified 62 principal aquifers in the U.S. (U.S. Geological Survey, 2003). About 1/3 of the Nation's principal aquifers are the focus of water-quality assessments...

Date published: August 13, 2015
Status: Active

Quantitative assessment of water quality in the Upper Esopus Creek using fatty acid content of periphyton

Problem - The Esopus Creek is located in the Catskill Mountains of New York State and is part of the New York City (NYC) drinking water supply system. The basin was dammed in 1915 to form the Ashokan Reservoir splitting the creek into Upper (upstream of the reservoir) and Lower segments. The Schoharie Reservoir, located 27 miles north of the Ashokan Reservoir, supplies water to Upper Esopus...

Date published: August 13, 2015
Status: Active

Didymosphenia geminata in the Upper Esopus Creek: Seasonal changes in density and distribution, controlling environmental factors, and potential ecosystem impacts

Background The invasive diatom Didymosphenia geminata (didymo) has historically been a wide-spread, but rare, micro algae found in moderately flowing cold-water streams of North America, Europe, Asia, and (more recently) New Zealand. Demographic patterns of didymo have recently changed resulting in greater spatial coverage and temporal persistence (e.g. blooms) in streams worldwide. Didymo...

Date published: August 13, 2015
Status: Active

Evaluation of a barrier-island breach created by Hurricane Sandy at Fire Island National Seashore, N.Y.

Hurricane Sandy has created three open breaches in the barrier island system along the south shore of Long Island, N.Y. In response, the National Park Service has sought assistance from the U.S. Geological Survey (USGS) New York Water Science Center (NYWSC) to help evaluate the open breach condition in Federal Wilderness near the Old Inlet area of Fire Island National Seashore, N.Y. The NYWSC...

Date published: August 13, 2015
Status: Active

Effects of recreational flow releases on natural resources of the Indian and Hudson Rivers

The New York State Department of Environmental Conservation (NYSDEC) is developing a unit management plan/environmental impact statement (UMP/EIS) for the Hudson Gorge Primitive Area, an area of Forest Preserve land encompassing a scenic stretch of the Hudson River in the Adirondack Park. Two goals of the UMP/EIS are to inventory natural resources and ecosystems and take actions to protect...

Contacts: Barry P Baldigo
Date published: August 13, 2015
Status: Active

Delineation of the Freshwater-Saltwater Interface at Selected Public-Supply Wells Using Advanced Surface and Borehole Geophysical Techniques, in Eastern Suffolk County, New York

The combination of a complex hydrogeologic framework, narrow land masses surrounded by saltwater, and extensive ground-water public-supply pumpage has produced localized areas of elevated chloride concentrations in ground water. This project uses advanced surface and borehole geophysical methods to determine the extent of saltwater intrusion and road-salt plumes at selected sites in eastern...

Contacts: Frederick Stumm
Date published: August 13, 2015
Status: Active

Delineation of Groundwater Flow, Lithology, Faults, and Fractures Along Existing and Proposed Water Tunnel

Problem The New York City Department of Environmental Protection (NYCDEP) has asked the U.S. Geological Survey (USGS) to assist in two major studies: 1) delineation of the source(s) of shallow groundwater and the extent that the Delaware Aqueduct is contributing to local flooding issues, and 2) delineation of the structural, geologic, and hydrologic conditions along proposed tunnel...

Date published: August 13, 2015
Status: Active

Using Advanced Borehole Geophysical Methods to Characterize Fractures, Foliation, and Fractured-Rock Groundwater Flow at a Geothermal Test Site on Roosevelt Island, New York County, New York

Background The U.S. Geological Survey (USGS) has characterized fractures, foliation, and fractured-rock groundwater flow penetrated by test boreholes in crystalline bedrock underlying Manhattan Island, New York County, New York since 1998. New test boreholes will be drilled on Roosevelt Island in New York County for a Cornell University geothermal test project. Cornell University is...

Contacts: Anthony Chu
Date published: August 12, 2015
Status: Active

Identifying Thermal Refuges in the Schoharie Watershed

Problem Water temperature is a critical component of trout habitat. Stream temperatures not only affect the distribution, behavior, and survival of trout (and other species), but also compel these species to move toward small areas of preferred temperatures, known as refuges, to maximize growth, survival, and fitness. The Schoharie watershed in the Catskill Mountains, including East Kill, West...

Date published: August 12, 2015
Status: Active

Trends in Nitrate Concentrations in Public Water-Supply Wells, Suffolk County, New York, 1982-2008

Introduction High nitrate concentrations are a common concern among many purveyors, including the Suffolk County Water Authority (SCWA), the largest supplier of water to residents in Suffolk County. Typically, the amount of nitrate in groundwater is related to land use, where the greatest concentrations are observed in agricultural regions. In many areas, the nitrate concentration has...

Contacts: Irene J Fisher
Date published: August 12, 2015
Status: Active

Monitoring of Waterways for Mosquito Insecticides, Suffolk County, New York

Introduction Mosquitoes are the principle vector of the West Nile Virus (WNV) which causes infections in humans and animals and has emerged as a public health threat throughout Long Island, NY. The WNV was first detected among birds and mosquitoes by the Suffolk County Department of Health Services (SCDHS) in 2000. In response to the public health concern, the USGS in cooperation with the SC...

Date published: August 12, 2015
Status: Active

Long-Term Monitoring of Buck Creek Watershed in the Western Adirondack Region of New York

Monitoring of lake chemistry in the western Adirondack region has indicated reductions in the acidity of these lakes during the past two decades. However, lakes are not always reliable indicators of streams and soils. Uncertainty remains regarding the recovery potential of surface waters and the effects of acidic deposition on soils. Furthermore, nitrogen, long considered a growth-limiting...

Filter Total Items: 16,165
Publication Thumbnail
Year Published: 2018

Effects of host species and environment on the skin microbiome of Plethodontid salamanders

The amphibian skin microbiome is recognized for its role in defence against pathogens, including the deadly fungal pathogen Batrachochytrium dendrobatidis (Bd). Yet, we have little understanding of evolutionary and ecological processes that structure these communities, especially for salamanders and closely related species. We...

Muletz-Wolz, Carly R.; Yarwood, Stephanie A.; Grant, Evan H. Campbell; Fleischer, Robert C.; Lips, Karen R.
Muletz, C. R., Yarwood, S. A., Grant, E. H. C., Fleischer, R. C., and Lips, K. R., 2018, Effects of host species and environment on the skin microbiome of Plethodontid salamanders: Journal of Animal Ecology, v. 87, p. 341-353. https://doi.org/10.1111/1365-2656.12726

Publication Thumbnail
Year Published: 2018

Imperfect pathogen detection from non-invasive skin swabs biases disease inference

1. Conservation managers rely on accurate estimates of disease parameters, such as pathogen prevalence and infection intensity, to assess disease status of a host population. However, these disease metrics may be biased if low-level infection intensities are missed by sampling methods or laboratory diagnostic tests. These false negatives...

DiRenzo, Graziella V.; Grant, Evan H. Campbell; Longo, Ana V.; Che-Castaldo, Christian; Zamudio, Kelly R.; Lips, Karen
DiRenzo, G. V., Grant, E. H. C., Longo, A. V., Che-Castaldo, C., Zamudio, K. R., and Lips, K. R., 2018, Imperfect pathogen detection from non-invasive skin swabs biases disease inference: Methods in Ecology and Evolution, v. 9, no. 2, p. 380-389. https://doi.org/10.1111/2041-210X.12868

Publication Thumbnail
Year Published: 2018

Genomic evolution, recombination, and inter-strain diversity of chelonid alphaherpesvirus 5 from Florida and Hawaii green sea turtles with fibropapillomatosis

Chelonid alphaherpesvirus 5 (ChHV5) is a herpesvirus associated with fibropapillomatosis (FP) in sea turtles worldwide. Single-locus typing has previously shown differentiation between Atlantic and Pacific strains of this virus, with low variation within each geographic clade. However, a lack of multi-locus genomic sequence data hinders...

Morrison, Cheryl L.; Iwanowicz, Luke R.; Work, Thierry M.; Fahsbender, Elizabeth; Breitbart, Mya; Adams, Cynthia R.; Iwanowicz, Deborah D.; Sanders, Lakyn; Ackermann, Mathias; Cornman, Robert S.
Morrison et al. (2018), Genomic evolution, recombination, and inter-strain diversity of chelonid alphaherpesvirus 5 from Florida and Hawaii green sea turtles with fibropapillomatosis. PeerJ 6:e4386; DOI 10.7717/peerj.4386

Publication Thumbnail
Year Published: 2018

Draft critical mineral list—Summary of methodology and background information—U.S. Geological Survey technical input document in response to Secretarial Order No. 3359

Pursuant to the Presidential Executive Order (EO) No. 13817, “A Federal Strategy to Ensure Secure and Reliable Supplies of Critical Minerals,” the Secretary of the Interior, in coordination with the Secretary of Defense, and in consultation with the heads of other relevant executive departments and agencies, was tasked with developing and...

Fortier, Steven M.; Nassar, Nedal T.; Lederer, Graham W.; Brainard, Jamie ; Gambogi, Joseph; McCullough, Erin A.
Fortier, S.M., Nassar, N.T., Lederer, G.W., Brainard, Jamie, Gambogi, Joseph, and McCullough, E.A., 2018, Draft critical mineral list—Summary of methodology and background information—U.S. Geological Survey technical input document in response to Secretarial Order No. 3359: U.S. Geological Survey Open-File Report 2018–1021, 15 p., https://doi.org/10.3133/ofr20181021.

Publication Thumbnail
Year Published: 2018

Assessing the impact of stocking northern-origin hatchery brook trout on the genetics of wild populations in North Carolina

The release of hatchery-origin fish into streams with endemics can degrade the genetics of wild populations if interbreeding occurs. Starting in the 1800s, brook trout descendent from wild populations in the northeastern United States were stocked from hatcheries into streams across broad areas of North America to create and enhance fishery...

Kazyak, David; Rash, Jacob; Lubinski, Barbara A.; King, Tim L.
Kazyak, D.C., Rash, J., Lubinski, B.A. et al. Conserv Genet (2018) 19: 207. https://doi.org/10.1007/s10592-017-1037-4

Publication Thumbnail
Year Published: 2018

Development of a multimetric index for integrated assessment of salt marsh ecosystem condition

Tools for assessing and communicating salt marsh condition are essential to guide decisions aimed at maintaining or restoring ecosystem integrity and services. Multimetric indices (MMIs) are increasingly used to provide integrated assessments of ecosystem condition. We employed a theory-based approach that considers the multivariate relationship...

Nagel, Jessica L.; Neckles, Hilary A.; Guntenspergen, Glenn R.; Rocks, Erika N.; Schoolmaster, Donald; Grace, James B.; Skidds, Dennis E.; Stevens, Sara
Nagel, J. L., Neckles, H. A., Guntenspergen, G. R., Rocks, E. N., Schoolmaster, D. R. Jr., Grace, J. B., Skidds, D., and Stevens, S., 2018, Development of a multimetric index for integrated assessment of salt marsh ecosystem condition: Estuaries and Coasts, v. 41, no. 2, p. 334-348. https://doi.org/10.1007/s12237-017-0293-3

Publication Thumbnail
Year Published: 2018

Post-breeding migration and connectivity of red knots in the Western Atlantic

Red knots (Calidris canutus rufa) have 3 distinct nonbreeding regions: 1 in the southeastern United States and Caribbean, another on the northeast coast of Brazil in the Maranhão region, and a third along the Patagonian coasts of Chile and Argentina. Effective conservation and recovery of this threatened long-distance migrant will require...

Lyons, James E.; Winn, Bradford; Keyes, Timothy; Kalasz, Kevin S.
Lyons, J. E., Winn, B., Keyes, T., and Kalasz, K. S., 2018, Post-breeding migration and connectivity of red knots in the Western Atlantic: Journal of Wildlife Management, v. 82, no. 2, p. 383-396. https://doi.org/10.1002/jwmg.21389

Publication Thumbnail
Year Published: 2018

Development of a species status assessment process for decisions under the U.S. Endangered Species Act

Decisions under the U.S. Endangered Species Act (ESA) require scientific input on the risk that the species will become extinct. A series of critiques on the role of science in ESA decisions have called for improved consistency and transparency in species risk assessments and clear distinctions between science input and policy application. To...

Smith, David R.; Allan, Nathan L.; McGowan, Conor P.; Szymankski, Jennifer A.; Oetker, Susan R.; Bell, Heather M.

Publication Thumbnail
Year Published: 2018

Biomarker responses of Peromyscus leucopus exposed to lead and cadmium in the Southeast Missouri Lead Mining District

Biomarker responses and histopathological lesions have been documented in laboratory mammals exposed to elevated concentrations of lead and cadmium. The exposure of white-footed mice (Peromyscus leucopus) to these metals and the potential associated toxic effects were examined at three contaminated sites in the Southeast Missouri Lead Mining...

Beyer, W. Nelson; Casteel, Stan W.; Friedrichs, Kristen R.; Gramlich, Eric; Houseright, Ruth A.; Nichols, John W.; Karouna-Renier, Natalie K.; Kim, Dae Young; Rangen, Kathleen; Rattner, Barnett A.; Schultz, Sandra L.
Beyer, W. N., Casteekm , S.W., Friedrichs, K. R., Gramlich, E., Houseright, R. A., Nichols, J. R., Karouna-Renier, N. K., Kim, D. Y., Rangen, K. L., Rattner, B. A., and Schultz, S. L., 2018, Biomarker responses of Peromyscus leucopus exposed to lead and cadmium in the Southeast Missouri Lead Mining District: Environmental Monitoring and Assessment, v. 190, Article104, 16p. https://doi.org/10.1007/s10661-017-6442-0

Publication Thumbnail
Year Published: 2018

Comparative analyses of hydrological responses of two adjacent watersheds to climate variability and change using the SWAT model

Water quality problems in the Chesapeake Bay Watershed (CBW) are expected to be exacerbated by climate variability and change. However, climate impacts on agricultural lands and resultant nutrient loads into surface water resources are largely unknown. This study evaluated the impacts of climate variability and change on two adjacent watersheds in...

Lee, Sangchul; Yeo, In-Young; Sadeghi, Ali M.; McCarty, Gregory W.; Hively, Wells; Lang, Megan W.; Sharifi, Amir
Lee, Sangchul, In-Young Yeo, Ali M. Sadeghi, Gregory W. McCarty, W. D. Hively, Megan W. Lang, and Amir Sharifi. Comparative analyses of hydrological responses of two adjacent watersheds to climate variability and change scenarios using SWAT model. Submitted to HESS.

Publication Thumbnail
Year Published: 2018

Contaminant-associated health effects in fishes from the Ottawa and Ashtabula Rivers, Ohio

The health of resident fishes serves as a biologically relevant barometer of aquatic ecosystem integrity. Here, the health of the Ottawa River and Ashtabula River (both within the Lake Erie Basin) were assessed using morphological and immunological biomarkers in brown bullheads (Ameiurus nebulosus) and largemouth bass (Micropterus salmoides)....

Iwanowicz, Luke R.; Blazer, Vicki S.; Walsh, Heather L.; Shaw, Cassidy H.; DeVault, David S.; Banda, Jo A.
Iwanowicz, L.R., V. S. Blazer, H.L. Walsh, C.H. Shaw, D.S. DeVault and J.A. Banda (2018) Contaminant-Associated Health Effects in Fishes from the Ottawa and Ashtabula Rivers, Ohio Journal of Great Lakes Research. 44(1); 184 - 196.

Publication Thumbnail
Year Published: 2018

Dynamic interactions between coastal storms and salt marshes: A review

This manuscript reviews the progresses made in the understanding of the dynamic interactions between coastal storms and salt marshes, including the dissipation of extreme water levels and wind waves across marsh surfaces, the geomorphic impact of storms on salt marshes, the preservation of hurricanes signals and deposits into the sedimentary...

Leonardi, Nicoletta; Carnacina, Iacopo; Donatelli, Carmine; Ganju, Neil K.; Plater, Andrew James; Schuerch, Mark; Temmerman, Stijn
Leonardi, N., Carnacina, I., Donatelli, C., Ganju, N., Plater, A., Schuerch, M., Temmerman, S., 2018, Dynamic interactions between coastal storms and salt marshes: a review: Geomorphology, v. 301, 92-107 p doi:10.1016/j.geomorph.2017.11.001.

Filter Total Items: 1,772
beryllium tuff
December 31, 2016

Beryllium Tuff, Spor Mountain

Closeup of the Beryllium Tuff member, Spor Mountain, Utah.

Image shows a sample of augelite and quartz on a black background.
December 31, 2016

Augelite and Quartz

A sample of augelite and quartz. Augelite is an aluminum phosphate mineral, primarily prized for collecting rather than as a source for its industrial mineral components.

Sample provided by Carlin Green, USGS. Sample originated from Mundo Nuevo Mine, Peru, and is 3.7cm in size.

scientists collecting samples
December 31, 2016

Sampling at Spor Mountain

USGS scientists Brian Jaskula and Robert Ayuso collecting samples at Spor Mountain, Utah.

Map showing the surficial geology of Vineyard and western Nantucket Sounds with equivalent onshore geology
December 31, 2016

Surficial Geology of Vineyard and western Nantucket Sounds

Map showing the surficial geology of Vineyard and western Nantucket Sounds with equivalent onshore geology (adapted from Stone and DiGiacomo-Cohen, 2009). The areal extents over which offshore subsurface geologic units crop out at the sea floor were interpreted from seismic-reflection data.

Parameters considered in models for shoreline change
December 31, 2016

Models for shoreline change

Parameters considered in models for shoreline change, barrier island characteristics, and piping plover habitat availability. Together, these three models allow for forecasts of most likely future barrier island characteristics and piping plover habitat availability given sea-level rise. 

Image shows a sample of axinite against a black background
December 31, 2016

Axinite

This is a sample of axinite with iron, making it ferroaxinite. Axinite is primarily used as a collectors mineral.

Sample provided by Carlin Green, USGS. Sample originated from Puiva Mount, Russia, and is 3.0cm in size.

scientists sampling near mountain
December 31, 2016

Sampling at Spor Mountain

USGS scientists gathering samples for analysis at Spor Mountain, Utah.

Screen shot of the CCH web Portal shown over a coastal development
December 31, 2016

USGS data and tools can be accessed using mobile devices in the field

The USGS strives to put coastal change data and information at the fingertips of users such as planners and emergency managers. The explicit goal is to enable users to integrate and apply USGS data and tools to address their specific needs. Online resources such as the Coastal Change Hazards (CCH) portal are designed with applied use of data in mind. The data can be

...
Image of USGS scientist on a beach recording piping plover habitat characteristics
December 31, 2016

USGS scientist records piping plover habitat characteristics

USGS scientist Sara Zeigler records habitat characteristics in iPlover at an ‘exclosed’ nest. On some beaches, managers erect netting around nests to protect eggs/chicks and adults from predators, allowing movement of chicks and parents to and from the nest but excluding predators

Image shows a sample of azurite and malachite against a black background
December 31, 2016

Azurite and Malachite

A sample of azurite, the blue mineral, and malachite, the green mineral. Both azurite and malachite are copper minerals that were once used as pigments but are now mostly valued as collectors minerals. They do serve as good indicators of copper deposits that can be developed. Read more information about copper here.

...
Image shows a sample of Apophyllite and Prehnite on a black background
December 31, 2016

Sample of Apophyllite and Prehnite

These two minerals are apophyllite and prehnite. Both apophyllite, the clear crystals, and prehnite, the green mineral, are primarily prized as collectors minerals. 

Sample provided by Carlin Green, USGS. Sample originated from Virginia Crushed Stone Quarry, Virginia, and is 4.6cm in size.