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.

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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.

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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...

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Year Published: 2018

A consistent global approach for the morphometric characterization of subaqueous landslides

Landslides are common in aquatic settings worldwide, from lakes and coastal environments to the deep sea. Fast-moving, large-volume landslides can potentially trigger destructive tsunamis. Landslides damage and disrupt global communication links and other critical marine infrastructure. Landslide deposits act as foci for localized, but important,...

Clare, Michael; Chaytor, Jason; Dabson, Oliver; Gamboa, Davide; Georgiopoulou, Aggeliki; Eady, Harry; Hunt, James; Jackson, Christopher; Katz, Oded; Krastel, Sebastian; León, Ricardo; Micallef, Aaron; Moernaut, Jasper; Moriconi, Roberto; Moscardelli, Lorena; Mueller, Christof; Normandeau, Alexandre; Patacci, Marco; Steventon, Michael; Urlaub, Morelia; Volker, David; Wood, Lesli; Jobe, Zane R.

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Year Published: 2018

Brook trout distributional response to unconventional oil and gas development: Landscape context matters

We conducted a large-scale assessment of unconventional oil and gas (UOG) development effects on brook trout (Salvelinus fontinalis) distribution. We compiled 2231 brook trout collection records from the Upper Susquehanna River Watershed, USA. We used boosted regression tree (BRT) analysis to predict occurrence probability at the 1:24,000 stream-...

Merriam, Eric R.; Petty, J. Todd; Maloney, Kelly O.; Young, John A.; Faulkner, Stephen; Slonecker, E. Terrence; Milheim, Lesley E.; Hailegiorgis, Atesmachew; Niles, Jonathan M.
Merriam, E. R., J. T. Petty, K. O. Maloney, J. A. Young, S. P. Faulkner, E. T. Slonecker, L. E. Milheim, A. Hailegiorgis, and J. Niles. 2018. Brook trout distributional response to unconventional oil and gas development: Landscape context matters. Science of The Total Environment 628-629:338-349.

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Year Published: 2018

Archie’s saturation exponent for natural gas hydrate in coarse-grained reservoirs

Accurately quantifying the amount of naturally occurring gas hydrate in marine and permafrost environments is important for assessing its resource potential and understanding the role of gas hydrate in the global carbon cycle. Electrical resistivity well logs are often used to calculate gas hydrate saturations, Sh, using Archie's equation....

Cook, Ann E.; Waite, William F.
Cook, A. E., & Waite, W. F. (2018). Archie’s saturation exponent for natural gas hydrate in coarse-grained reservoirs.Journal of Geophysical Research: Solid Earth, 123. https://doi.org/10.1002/ 2017JB015138

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Year Published: 2018

Tributyltin: Advancing the science on assessing endocrine disruption with an unconventional endocrine-disrupting compound

Tributyltin (TBT) has been recognized as an endocrine disrupting chemical (EDC) for several decades. However, only in the last decade, was its primary endocrine mechanism of action (MeOA) elucidated—interactions with the nuclear retinoid-X receptor (RXR), peroxisome proliferator-activated receptor γ (PPARγ), and their heterodimers. This molecular...

Lagadic, Laurent; Katsiadaki, Ioanna; Biever, Ronald C.; Guiney, Patrick; Karouna-Renier, Natalie K.; Schwarz, Tamar; Meador, James P.
Lagadic, L., Katsiadaki, I., Biever, R. C., Guiney, P. D., Karouna-Renier, N., Schwarz, T., and Meador, J. P., 2017, Tributyltin: Advancing the science on assessing endocrine disruption with an unconventional endocrine-disrupting compound: Reviews of Environmental Contamination and Toxicology, v. 245, p. 65-127. https://doi.org/10.1007/398_2017_8

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Year Published: 2018

Nitrogen concentrations and loads for the Connecticut River at Middle Haddam, Connecticut, computed with the use of autosampling and continuous measurements of water quality for water years 2009 to 2014

The daily and annual loads of nitrate plus nitrite and total nitrogen for the Connecticut River at Middle Haddam, Connecticut, were determined for water years 2009 to 2014. The analysis was done with a combination of methods, which included a predefined rating curve method for nitrate plus nitrite and total nitrogen for water years 2009 to 2011...

Mullaney, John R.; Martin, Joseph W.; Morrison, Jonathan
Mullaney, J.R., Martin, J.W., and Morrison, J., 2018, Nitrogen concentrations and loads for the Connecticut River at Middle Haddam, Connecticut, computed with the use of autosampling and continuous measurements of water quality for water years 2009 to 2014: U.S. Geological Survey Scientific Investigations Report 2018–5006, 22 p., https://doi.org/10.3133/sir20185006.

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Year Published: 2018

Hydrologic assessment of the Edwin B. Forsythe National Wildlife Refuge

The Edwin B. Forsythe National Wildlife Refuge (hereafter Forsythe refuge or the refuge) is situated along the central New Jersey coast and provides a mixture of freshwater and saltwater habitats for numerous bird, wildlife, and plant species. Little data and information were previously available regarding the freshwater dynamics that support the...

Wieben, Christine M.; Chepiga, Mary M.
Wieben, C.M., and Chepiga, M.M., 2018, Hydrologic assessment of the Edwin B. Forsythe National Wildlife Refuge, New Jersey: U.S. Geological Survey Scientific Investigations Report 2017–5088, 38 p., https://doi.org/10.3133/sir20175088.

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Year Published: 2018

Hydrogeology of, simulation of groundwater flow in, and potential effects of sea-level rise on the Kirkwood-Cohansey aquifer system in the vicinity of Edwin B. Forsythe National Wildlife Refuge, New Jersey

The Edwin B. Forsythe National Wildlife Refuge encompasses more than 47,000 acres of New Jersey coastal habitats, including salt marshes, freshwater wetlands, tidal wetlands, barrier beaches, woodlands, and swamps. The refuge is along the Atlantic Flyway and provides breeding habitat for fish, migratory birds, and other wildlife species. The...

Fiore, Alex R.; Voronin, Lois M.; Wieben, Christine M.
Fiore, A.R., Voronin, L.M., and Wieben, C.M., 2018, Hydrogeology of, simulation of groundwater flow in, and potential effects of sea-level rise on the Kirkwood-Cohansey aquifer system in the vicinity of Edwin B. Forsythe National Wildlife Refuge, New Jersey: U.S. Geological Survey Scientific Investigations Report 2017-5135, 59 p., https://doi.org/10.3133/sir20175135.

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Year Published: 2018

Development of Raman spectroscopy as a thermal maturity proxy in unconventional resource assessment

The objective of this study was to correlate shale hydrous pyrolysis with thermal maturity measurements based on solid bitumen reflectance (BRo) at the U.S. Geological Survey (USGS) and Raman microscopy (RM) at WellDog. In semi-blind Phase I, BRo values of the initial set of 8 samples were withheld prior to RM analysis. As reported previously, a...

Myers, Grant A.; Kehoe, Kelsey; Hackley, Paul C.

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Year Published: 2018

Spatial organization of the gastrointestinal microbiota in urban Canada geese

Recent reviews identified the reliance on fecal or cloacal samples as a significant limitation hindering our understanding of the avian gastrointestinal (gut) microbiota and its function. We investigated the microbiota of the esophagus, duodenum, cecum, and colon of a wild urban population of Canada goose (Branta canadensis). From a population...

Drovetski, Sergei V.; O'Mahoney, Michael; Ransome, Emma J.; Matterson, Kenan O.; Lim, Haw Chuan; Chesser, Terry; Graves, Gary R.
Drovetski, S. V., O'Mahoney, M., Ransome, E. J., Matterson, K. O., Lim, H. C., Chesser, R. T., and Graves, G. R, 2018, Spatial organization of the gastrointestinal microbiota in urban Canada geese: Scientific Reports , v. 8, no. 1, Article 3713. https://doi.org/10.1038/s41598-018-21892-y

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Year Published: 2018

Downstream fish passage guide walls: A hydraulic scale model analysis

Partial-depth guide walls are used to improve passage efficiency and reduce the delay of out-migrating anadromous fish species by guiding fish to a bypass route (i.e. weir, pipe, sluice gate) that circumvents the turbine intakes, where survival is usually lower. Evaluation and monitoring studies, however, indicate a high propensity for some fish...

Mulligan, Kevin; Towler, Brett; Haro, Alexander J.; Ahlfeld, David P.
Kevin Brian Mulligan, Brett Towler, Alex Haro, David P. Ahlfeld, Downstream fish passage guide walls: A hydraulic scale model analysis, Ecological Engineering, Volume 115, May 2018, Pages 122-138, ISSN 0925-8574, https://doi.org/10.1016/j.ecoleng.2018.02.006. (https://www.sciencedirect.com/science/article/pii/S0925857418300259)

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Year Published: 2018

Spatial capture–recapture with partial identity: An application to camera traps

Camera trapping surveys frequently capture individuals whose identity is only known from a single flank. The most widely used methods for incorporating these partial identity individuals into density analyses discard some of the partial identity capture histories, reducing precision, and, while not previously recognized, introducing bias. Here, we...

Augustine, Ben C.; Royle, J. Andrew; Kelly, Marcella J.; Satter, Christopher B.; Alonso, Robert S.; Boydston, Erin E.; Crooks, Kevin R.
Augustine, B., Royle, J. A., Kelly, M., Satter, C., Alonso, R., Boydston, E., and Crooks, K., 2018, Spatial capture-recapture with partial identity: an application to camera traps: Annals of Applied Statistics, v. 12, no. 1, p. 67-95. https://doi.org/10.1101/056804

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Year Published: 2018

Preliminary stage and streamflow data at selected U.S. Geological Survey streamgages in Maine and New Hampshire for the flood of October 30–31, 2017

Rainfall from a storm on October 24–27, 2017, and Tropical Storm Philippe on October 29–30, created conditions that led to flooding across portions of New Hampshire and western Maine. On the basis of streamflow data collected at 30 selected U.S. Geological Survey (USGS) streamgages in the Androscoggin River, Connecticut River, Merrimack River, and...

Kiah, Richard G.; Stasulis, Nicholas W.
Kiah, R.G, and Stasulis, N.W., 2018, Preliminary stage and streamflow data at selected U.S. Geological Survey streamgages in Maine and New Hampshire for the flood of October 30–31, 2017: U.S. Geological Survey Open-File Report 2018–1026, 12 p., https://doi.org/10.3133/ofr20181026.

Filter Total Items: 1,774
beryllium tuff
December 31, 2016

Beryllium Tuff, Spor Mountain

Closeup of the Beryllium Tuff member, 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.

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.

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. 

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

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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.

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.

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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.