Unified Interior Regions

Region 1: North Atlantic-Appalachian

Our Science Centers

Our Science Centers

The NAA Region has 15 Science Centers spanning 15 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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February Photo Contest

February Photo Contest

Check out the winning photographs in the February 2020 Photo Contest! Categories include People, USGS at Work, Where We Work, and Honorable Mention

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Regions L2 Landing Page Tabs

Filter Total Items: 778
Date published: August 11, 2015
Status: Active

Detailed Aquifer Mapping in the Greene-Kattelville area of New York

Background Since 1980 the U.S. Geological Survey has conducted a Detailed Aquifer Mapping Program in upstate New York, first in cooperation with the New York State Department of Health (NYSDOH), and later in cooperation with the New York State Department of Environmental Conservation (NYSDEC), Division of Water. The objective of this program is to define the hydrogeology of important stra...

Contacts: Paul Heisig, Todd S. Miller
Date published: August 11, 2015
Status: Active

Detailed Aquifer Mapping Program in Upstate New York

BRIEF HISTORY OF THE DETAILED AQUIFER MAPPING PROGRAM In 1980 the U.S. Geological Survey began a Detailed Aquifer Mapping Program in upstate New York, in cooperation with the New York State Department of Health (NYSDOH), funded by the USEPA's Underground Injection Control Program. The objective of this program was to define the hydrogeology of 21 extensively used (primary) stratified-drift...

Date published: August 10, 2015
Status: Active

Development and Implementation of a Baseflow (groundwater) Monitoring Network for the Pepacton Watershed

The Pepacton watershed is an integral part of New York City's public-water supply system. Most of the watershed is within Delaware County with headwaters of some of its eastern tributary streams originating in Greene and Ulster Counties. Land use varies from dairy farms in the northern portion of the watershed to extensive forested areas in the south with small rural communities interspersed...

Contacts: Paul Heisig
Date published: August 10, 2015
Status: Active

Sediment toxicity and status of benthic invertebrate communities in the St. Lawrence River and its tributaries within the Massena Area-of-Concern

Background Past water-quality issues in the St. Lawrence River at Massena, NY resulted in a determination that selected beneficial uses were impaired in a surrounding Area of Concern (AOC) and on the Canadian side of the international boundary (Cornwall, Ontario). The benthic macroinvertebrate community or “benthos” Beneficial Use Impairment (BUI) was designated degraded because impairment...

Contacts: Barry P Baldigo, Brian Duffy
Date published: August 10, 2015
Status: Active

Estimating chronic toxicity of waters from the St. Lawrence River at Massena Area-of-Concern using two plankton species

Background Past water-quality issues in the St. Lawrence River at Massena, NY resulted in a determination that selected beneficial uses may be impaired in a surrounding Area of Concern (AOC) and on the Canadian side of the international boundary (Cornwall, Ontario). The plankton (phytoplankton zooplankton) Beneficial Use Impairment (BUI) was so designated because impairment metrics were...

Contacts: Barry P Baldigo
Date published: August 10, 2015
Status: Active

Development and Operation of Groundwater, Surface-Water, and Water-Quality Monitoring Networks in Richmond, New York, and Bronx Counties, New York

Problem Previous hydrologic studies have indicated that there may be sufficient water resources underlying Richmond, New York, and Bronx Counties for use as a supplemental water supply by the New York City Department of Environmental Protection (NYCDEP) in times of a drought or other water shortage. Unfortunately, comprehensive data on the quantity and quality of the Counties' water resources...

Contacts: Irene J Fisher
Date published: August 10, 2015
Status: Active

Development of GIS datasets for selected aquifers in New York

Problem - Since the 1980s, the U.S. Geological Survey (USGS) has mapped over 30 sand and gravel aquifers in upstate New York at the 1:24,000-scale. These mapped aquifers include both the primary and many of the principal aquifers as designated by the New York State Department of Environmental Conservation. Although the 1:24,000-scale maps are valuable in their present form, their usefulness is...

Date published: August 7, 2015
Status: Active

The Effects of Watershed and Stream Liming on Mercury Dynamics at Honnedaga Lake

Problem The Adirondack region of New York has 128 lakes that are listed as impaired by acidity under section 303(d) of the Clean Water Act. Acidity can limit the survival and reproduction of native fishes such as brook trout (Salvelinus fontinalis). Chronic and episodic acidification also stresses fish, aquatic macroinvertebrates, and other biota of inflowing tributaries of these and many...

Contacts: Douglas A Burns, Karen Riva Murray, Ph.D., Charles Driscoll
Date published: August 7, 2015
Status: Active

Hydrogeology of the Tully Valley Mudboil Area, Southern Onondaga County, New York

Problem The Tully Valley, located in southern Onondaga County has been the source of sediment and brackish water discharge to Onondaga Creek, a tributary to the Seneca and Oswego Rivers and eventually Lake Ontario. Information on the origin of the Tully Valley mudboils, their persistence, and the possible extent of their migration within the Tully Valley is needed to mitigate or remediate (1)...

Date published: August 7, 2015
Status: Active

Geohydrology of the Valley-Fill Aquifer in the Nanticoke Creek Valley near Endicott, New York

Problem The Village of Endicott relies on wells that supply ground water from sand and gravel aquifers within the Susquehanna River valley. Localized contamination in the Village of Endicott and elsewhere in the Susquehanna River Valley has been documented by U. S. Environmental Protection Agency (USEPA) and the New York State Department of Environmental Conservation (NYSDEC) from a number of...

Date published: August 6, 2015
Status: Active

Assessing American Eel Populations in Tributaries to the Upper Delaware River

American Eel (Anguilla Rostrata) Background The U.S. Geological Survey (USGS) has worked in cooperation with The Nature Conservancy (TNC) over the past 11 years to study the effects of channel geomorphology and impoundments on the distribution of common and rare mussels in the Neversink River and to characterize fish assemblages in tributaries to the Upper Delaware River in New York,...

Contacts: Barry P Baldigo
Date published: August 6, 2015
Status: Active

Effects of Stream Restoration and Bank Stabilization on Suspended Sediment in Tributaries to the Upper Esopus Creek

Introduction The upper Esopus Creek watershed is located in the eastern Catskill Mountains of New York State and covers 497 km2 from Slide Mountain, the highest peak in the Catskills at 1,274 m, to the Ashokan Reservoir at 193 m elevation (fig. 1). Suspended sediment and turbidity are primary water quality concerns in the Ashokan Reservoir watershed, part of the New York City Catskill-Delaw...

Filter Total Items: 15,570
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Year Published: 2017

Increased hurricane frequency near Florida during Younger Dryas Atlantic Meridional Overturning Circulation slowdown

The risk posed by intensification of North Atlantic hurricane activity remains controversial, in part due to a lack of available storm proxy records that extend beyond the relatively stable climates of the late Holocene. Here we present a record of storm-triggered turbidite deposition offshore the Dry Tortugas, south Florida, USA, that spans...

Toomey, Michael; Korty, Robert L.; Donnelly, Jeffrey P.; van Hengstum, Peter J.; Curry, William B.
Michael R. Toomey, Robert L. Korty, Jeffrey P. Donnelly, Peter J. van Hengstum, William B. Curry; Increased hurricane frequency near Florida during Younger Dryas Atlantic Meridional Overturning Circulation slowdown. Geology ; 45 (11): 1047–1050. doi: https://doi.org/10.1130/G39270.1

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Year Published: 2017

Reply to ‘Marsh vulnerability to sea-level rise’

Response to Parkinson et al. Rebuttal of Kirwan, M. L., Temmerman, S., Skeehan, E. E., Guntenspergen, G. R.,& Fagherazzi, S. (2016). Overestimation of marsh vulnerability to sea level rise. Nature Climate Change, 6(3):253-2601.

Kirwan, Matthew L.; Temmerman, Stijn; Guntenspergen, Glenn R.; Fagherazzi, Sergio
Kirwan, M. L., Temmerman., S., Guntenspergen, G. R., and Fagherazzi, S., 2017, Reply to ‘Marsh vulnerability to sea-level rise’: Nature Climate Change, v. 7, p. 756-757. https://doi.org/10.1038/nclimate3425

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Year Published: 2017

Transgressive-regressive cycles in the metalliferous, oil-shale-bearing Heath Formation (Upper Mississippian), central Montana

The Upper Mississippian Heath Formation, which accumulated in the Big Snowy Trough of central Montana, has been known for three decades to contain mudrocks highly enriched in Zn, V, Mo, Ni and other metals, and source rocks for oil. The unit has more recently been recognized as a prospective tight oil play. Here we present petrographic,...

Dumoulin, Julie A.; Johnson, Craig A.; Kelley, Karen D.; Jarboe, Palma J.; Hackley, Paul C.; Scott, Clint; Slack, John F.

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Year Published: 2017

Concepts: Assessing tiger population dynamics using capture–recapture sampling

Capture-recapture can be viewed as an animal survey method in which the count statistic is the total number of animals caught, and the associated detection probability is the probability of capture.

Royle, J. Andrew; Gopalaswamy, Arjun M.; Dorazio, Robert; Nichols, James D.; Jathanna, Devcharan; Parameshwaran, Ravishankar
Royle, J.A., Gopalaswamy, A.M., Dorazio, R.M., Nichols, J.D., Jathanna, D., Parameshwaran, R., and Karanth, K.U., 2017, Concepts: Assessing tiger population dynamics using capture–recapture sampling, in Karanth, K.U. and Nichols, J.D., editors, Methods for monitoring tiger and prey populations: Singapore, Springer, p. 163-189. https://doi.org/10.1007/978-981-10-5436-5_9

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Year Published: 2017

Estimating the high-arsenic domestic-well population in the conterminous United States

Arsenic concentrations from 20 450 domestic wells in the U.S. were used to develop a logistic regression model of the probability of having arsenic >10 μg/L (“high arsenic”), which is presented at the county, state, and national scales. Variables representing geologic sources, geochemical, hydrologic, and physical features were among the...

Ayotte, Joseph D.; Medalie, Laura; Qi, Sharon L.; Backer, Lorraine C.; Nolan, Bernard T.
Ayotte, Joseph D., Medalie, Laura, Qi, Sharon L., Backer, Lorraine C., and Nolan, Bernard T., 2017, Estimating the High-Arsenic Domestic-Well Population in the Conterminous United States. Environmental Science & Technology, DOI: 10.1021/acs.est.7b02881

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Year Published: 2017

Rapid exhumation of Cretaceous arc-rocks along the Blue Mountains restraining bend of the Enriquillo-Plantain Garden fault, Jamaica, using thermochronometry from multiple closure systems

The effect of rapid erosion on kinematic partitioning along transpressional plate margins is not well understood, particularly in highly erosive climates. The Blue Mountains restraining bend (BMRB) of eastern Jamaica, bound to the south by the left-lateral Enriquillo-Plantain Garden fault (EPGF), offers an opportunity to test the effects of highly...

Cochran, William J.; Spotila, James A.; Prince, Philip S.; McAleer, Ryan J.
Cochran, W. J., Spotila, J. A., Prince, P.S., and McAleer R.J., 2017, Rapid exhumation of Cretaceous arc-rocks along the Blue Mountains restraining bend of the Enriquillo-Plantain Garden fault, Jamaica, using thermochronometry from multiple closure systems, Tectonophysics, https://doi.org/10.1016/j.tecto.2017.09.021;

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Year Published: 2017

Significance of northeast-trending features in Canada Basin, Arctic Ocean

Synthesis of seismic velocity, potential field, and geological data from Canada Basin and its surrounding continental margins suggests that a northeast-trending structural fabric has influenced the origin, evolution, and current tectonics of the basin. This structural fabric has a crustal origin, based on the persistence of these trends in upward...

Hutchinson, Deborah; Jackson, H.R.; Houseknecht, David W.; Li, Q.; Shimeld, J.W.; Mosher, D.C.; Chian, D.; Saltus, Richard; Oakey, G.N.
Hutchinson, D. R., Jackson, H. R., Houseknecht, D. W., Li, Q., Shimeld, J. W., Mosher, D. C., … Oakey, G. N. (2017). Significance of northeast-trending features in Canada Basin, Arctic Ocean. Geochemistry, Geophysics, Geosystems, 18, 4156–4178. https://doi.org/10.1002/2017GC007099

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Year Published: 2017

Swimming behaviour and ascent paths of brook trout in a corrugated culvert

Culverts may restrict fish movements under some hydraulic conditions such as shallow flow depths or high velocities. Although swimming capacity imposes limits to passage performance, behaviour also plays an important role in the ability of fish to overcome velocity barriers. Corrugated metal culverts are characterized by unsteady flow and...

Goerig, Elsa; Bergeron, Normand E.; Castro-Santos, Theodore R.
E. Goerig, N. E. Bergeron, T. Castro-Santos, 2017. Swimming behaviour and ascent paths of brook trout in a corrugated culvert. River Research and Applications. 33:1463–1471.

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Year Published: 2017

Deglacial sea level history of the East Siberian Sea and Chukchi Sea margins

Deglacial (12.8–10.7 ka) sea level history on the East Siberian continental shelf and upper continental slope was reconstructed using new geophysical records and sediment cores taken during Leg 2 of the 2014 SWERUS-C3 expedition. The focus of this study is two cores from Herald Canyon, piston core SWERUS-L2-4-PC1 (4-PC1) and multicore SWERUS-L2-4-...

Cronin, Thomas M.; O'Regan, Matt; Pearce, Christof; Gemery, Laura; Toomey, Michael; Semiletov, Igor
Cronin, T. M., O'Regan, M., Pearce, C., Gemery, L., Toomey, M., Semiletov, I., and Jakobsson, M.: Deglacial sea-level history of the East Siberian Sea Margin, Clim. Past Discuss.,in review, 2017.

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Year Published: 2017

The magnitude and origin of groundwater discharge to eastern U.S. and Gulf of Mexico coastal waters

Fresh groundwater discharge to coastal environments contributes to the physical and chemical conditions of coastal waters, but the role of coastal groundwater at regional to continental scales remains poorly defined due to diverse hydrologic conditions and the difficulty of tracking coastal groundwater flow paths through heterogeneous subsurface...

Befus, Kevin; Kroeger, Kevin D.; Smith, Christopher G.; Swarzenski, Peter W.
Befus, K. M., Kroeger, K. D., Smith, C. G., & Swarzenski, P. W. (2017). The magnitude and origin of groundwater discharge to eastern U.S. and Gulf of Mexico coastal waters. Geophysical Research Letters, 44. https://doi.org/10.1002/2017GL075238

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Year Published: 2017

Assessing models of arsenic occurrence in drinking water from bedrock aquifers in New Hampshire

Three existing multivariate logistic regression models were assessed using new data to evaluate the capacity of the models to correctly predict the probability of groundwater arsenic concentrations exceeding the threshold values of 1, 5, and 10 micrograms per liter (µg/L) in New Hampshire, USA. A recently released testing dataset includes arsenic...

Andy, Caroline; Fahnestock, Maria Florencia; Lombard, Melissa; Hayes, Laura; Bryce, Julie; Ayotte, Joseph D.
Andy, C. M., Fahnestock, M. F., Lombard, M. A., Hayes, L., Bryce, J. G. and Ayotte, J. D. (2017), Assessing Models of Arsenic Occurrence in Drinking Water from Bedrock Aquifers in New Hampshire. Journal of Contemporary Water Research & Education, 160: 25–41. doi:10.1111/j.1936-704X.2017.03238.x

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Year Published: 2017

Biostratigraphic and morphometric analyses of specimens from the calcareous nannofossil genus Tribrachiatus

Biostratigraphic and morphometric analyses of calcareous nannofossil assemblages from one outcrop and two cored sections of lower Eocene sediments reveal the presence of two new species: Tribrachiatus lunatus sp. nov., and Tribrachiatus absidatus sp. nov. Differences between the new species and Tribrachiatus orthostylus are discussed. The first...

Self-Trail, Jean M.; Seefelt, Ellen L.; Shepherd, Claire L.; Martin, Victoria A.
Self-Trail, J.M., Seefelt, E.L., Shepherd, C. L., and Martin, V.A., 2017. Biostratigraphic and morphometric analyses of specimens from the calcareous nannofossil genus Tribrachiatus: Journal of Nannoplankton Research, v. 37 (2-3), p. 177-188.

Filter Total Items: 1,035
Purging a domestic well to be sampled for radon
June 9, 2014

Purging a domestic well to be sampled for radon

A U.S. Geological Survey (USGS) scientist recording water-quality parameters (pH, temperature, and specific conductance) during the purging of a domestic well that was sampled for radon at a site north of Jersey Shore, Pennsylvania.

photo of USGS staffers on beach making bathymetric survey of Long Island barrier-island breach from Hurricane Sandy
June 9, 2014

Long Island Bathymetric surveying of barrier-island breach

USGS staffers on beach making bathymetric survey of Long Island barrier-island breach from Hurricane Sandy

2 USGS scientists on a beach launching an orange adcp into the Atlantic Ocean
June 9, 2014

Launching ADCP into the ocean from a Long Island, NY beach

Two USGS scientists launching an Acoustic Doppler Current Profiler (ADCP) into the ocean from a Long Island, NY beach

Sudbury Dam, Massachusetts
May 16, 2014

Sudbury Dam, Massachusetts

Sudbury Dam located in Southborough Massachusetts was built in 1894. A storehouse was built in 1900.

view across Ashumet Pond, Cape Cod, Massachusetts
April 30, 2014

Ashumet Pond, Cape Cod

View looking west from Fishermans Cove, across Ashumet Pond, Cape Cod, Massachusetts. The small sticks in the lake are a small-scale sampling grid. 

USGS Scientists installing a monitor base station
April 30, 2014

Installation of a basestation

USGS Geologist Francis Ashland and USGS Hydrologist Alex Fiore installing a base station at the OBB monitoring site

Earth As Art of the Susquehanna River
April 24, 2014

River and Ridge

The Susquehanna River appears as a dark line coursing through this scene in southeastern Pennsylvania. The cities of York, Lancaster, and Reading lie among agricultural lands. The State capital, Harrisburg, is positioned against the orange folds in the upper left of the image, along the edge of the Appalachian Mountain Ridge and Valley Province.

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photo of man sitting on cooler working with plastic encased plastic tubing
April 1, 2014

305(b) Groundwater quality sampling

305(b) Groundwater quality sampling 

2 people lifting ADCP at edge of ocean on Long Island
April 1, 2014

Long Island - Breach

Using ADCP (Acoustic Doppler Current Profiler) to measure current offshore on Long Island, NY.

horseshoe crab on the sand with water in the background
March 29, 2014

Horseplay on Assateague Island

Following Hurricane Sandy, GPR field work was conducted on Assateague Island, Maryland, to image stratigraphic features that may aid in explaining controls on washover deposition. The horseshoe crab was spotted early in the morning while gearing up for the day.