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: February 9, 2018
Status: Active

The West Brook Story

Natural systems, like rivers and streams, are remarkably complex, with many interacting parts. Data visualization tools make understanding and communicating complex ecological processes easier. Effective visualizations help users learn about patterns in data and how models work. Interactive visualizations are particularly useful, as they let users explore data and develop a personal...

Date published: February 9, 2018
Status: Active

Conservation Engineering

Engineering has an important role to play in the conservation of migratory fish species.  As a result of anthropogenic development on river systems, full and partial barriers to fish movement commonly exist in watersheds worldwide.  There is an estimated 2.5 million barriers to fish migration in the United States alone.  These barriers typically consist of small to large size dams, culverts,...

Date published: February 8, 2018
Status: Active

Lake Ontario Flood Monitoring and Mapping

Problem– Lake Ontario experienced period-of-record (1918-2017) maximum monthly average water levels during May through July 2017. NOAA lake gages recorded instantaneous peaks-of record, 249.2 at Olcott, 249.1 at Rochester, and 249.0 at Oswego and St. Vincent. These high water levels along with wind-generated waves caused flooding of thousands of residences and businesses and the erosion of...

Date published: February 7, 2018
Status: Active

Native Bee Inventory and Monitoring Lab

The USGS Native Bee Inventory and Monitoring Program designs and develops large and small scale surveys for native bees. As part of that program we also develop identification tools and keys for native bee species. One aspect of creating those tools is creating accurate and detailed pictures of native bees and the plants and insects they interact with.

Date published: February 5, 2018
Status: Active

Fish Ecology

Our goal is to identify the factors that govern population dynamics. Emphasis is on an integrative approach, combining field and laboratory studies to provide data for mathematical models of ecological and evolutionary dynamics. We focus on the fish that live in streams; how environmental variation, barriers to movement, and landscape characteristics influence changes in abundance over time...

Date published: February 5, 2018
Status: Active

Fish Passage Hydraulic Flume

Many existing upstream and downstream fish passage structure designs (fishways, culverts, screens, downstream bypasses, etc.) function poorly or only for a narrow range of species or environmental conditions. Agencies currently seek improved or new designs that pass a broader range of species with increased efficiency and reliability, under a wider range of hydraulic operating conditions, and...

Date published: February 5, 2018
Status: Active

Fish Biomechanics

Biomechanics is the study of mechanical laws relating to the movement of living organisms. In regards to fish, biomechanics pertains to the body shape of different species and the various structures of fish muscles, fins, etc. The biomechanics of a fish impact its swimming performance which in turn affects its ability to surpass barriers to movement. Understanding the biomechanical drivers of...

Date published: February 2, 2018
Status: Active

NE ARMI Research Team

Current and past members of the Northeast Amphibian Research and Monitoring Initiative

Date published: February 2, 2018
Status: Active

Stream salamanders in Shenandoah National Park: Movement and survival of stream salamander populations

Research in population biology is concerned with factors affecting the change in a population over time, including births, deaths, immigration and emigration. Despite the potential importance of immigration and emigration, empirical data on movement patterns are lacking in many systems.

Date published: February 2, 2018
Status: Active

Effects of Network Structure on Stream Salamanders

The role of stream network structure in driving salamander population dynamics needs more attention.  Although several studies have examined the effects of stream habitat and interspecific interactions on salamander populations, the role of the spatial structure of stream networks in mediating population processes for stream salamanders is poorly understood.  However, the role of stream...

Date published: February 2, 2018
Status: Active

Managing Habitat for Amphibians

Monitoring programs worldwide focus on estimation of trends in populations, often with an implicit expectation that identification of a trend will result in smart decisions as to how to respond (via management).  Though many researchers investigating the patterns and causes of amphibian declines have focused on estimation and detection of population trends, we take a different approach.  We...

Date published: February 2, 2018
Status: Active

Morphological variation of Plethodon shenandoah and Plethodon cinereus in high-elevation areas of Shenandoah National Park

In order for resource managers at Shenandoah National Park to implement long-term monitoring for the federally-endangered Shenandoah salamander, Plethodon shenandoah, absolute certain identification of the species in the field is critical.

Filter Total Items: 16,199
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Year Published: 2019

Influenza A virus detected in native bivalves in waterfowl habitat of the Delmarva Peninsula, USA

We evaluated the prevalence of influenza A virus (IAV) in different species of bivalves inhabiting natural water bodies in waterfowl habitat along the Delmarva Peninsula and Chesapeake Bay in eastern Maryland. Bivalve tissue from clam and mussel specimens (Macoma balthica, Macoma phenax, Mulinia sp., Rangia cuneata, ...

Densmore, Christine L.; Iwanowicz, Deborah D.; McLaughlin, Shawn M.; Ottinger, Christopher A.; Spires, Jason E.; Iwanowicz, Luke R.

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Year Published: 2019

Arsenic variability and groundwater age in three water supply wells in southeast New Hampshire

Three wells in New Hampshire were sampled bimonthly over three years to evaluate the temporal variability of arsenic concentrations and groundwater age. All samples had measurable concentrations of arsenic throughout the entire sampling period and concentrations in individual wells varied, on average, by more than 7 µg/L. High arsenic...

Levitt, Joseph; Degnan, James; Flanagan, Sarah; Jurgens, Bryant

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Year Published: 2019

Tritium as an indicator of modern, mixed, and premodern groundwater age

Categorical classification of groundwater age is often used for the assessment and understanding of groundwater resources. This report presents a tritium-based age classification system for the conterminous United States based on tritium (3H) thresholds that vary in space and time: modern (recharged in 1953 or later), if the measured value is...

Lindsey, Bruce D.; Jurgens, Bryant C.; Belitz, Kenneth
Lindsey, B.D., Jurgens, B.C., and Belitz, K., 2019, Tritium as an indicator of modern, mixed, and premodern groundwater age: U.S. Geological Survey Scientific Investigations Report 2019–5090, 18 p., https://doi.org/10.3133/sir20195090.

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Year Published: 2019

Estimating spatially and temporally complex range dynamics when detection is imperfect

Species distributions are determined by the interaction of multiple biotic and abiotic factors, which produces complex spatial and temporal patterns of occurrence. As habitats and climate change due to anthropogenic activities, there is a need to develop species distribution models that can quantify these complex range dynamics. In this paper, we...

Rushing, Clark S.; Royle, J. Andrew; Ziolkowski, David; Pardieck, Keith L.

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Year Published: 2019

Rapid adoption of nestboxes by Prothonotary Warblers (Protonotaria citrea) in mesic deciduous forest

Breeding territory selection in Prothonotary Warblers (Protonotaria citrea (Boddaert, 1783)) is thought to hinge on standing water, with a strong preference for low-lying areas prone to seasonal flooding. However, we have observed this species nesting in much drier areas than previously reported. We recently initiated a study of the Carolina...

Mueller, Alexander J; Twedt, Daniel J.; Bowers, E Keith

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Year Published: 2019

Adult survival of common eiders in Maine

Although most species of sea ducks are poorly studied, much is known about the population dynamics of the American race of Somateria mollissma dresseri (Common Eider). Although Common Eiders typically have high adult survival and low recruitment rates, their populations in Maine have declined since the early 1990s. Wildlife managers...

Allen, R. B.; McAuley, Daniel; Zimmerman, G.

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Year Published: 2019

Residency, recruitment, and stopover duration of hatch-year Roseate Terns (Sterna dougallii) during the pre-migratory staging period

Avian migratory stopover and staging sites represent important energetic bottlenecks and may influence population dynamics as much as breeding or wintering periods. Roseate terns (Sterna dougallii) are an ideal species to examine staging demography because >70% of the entire endangered northwest Atlantic population stages at accessible...

Davis, Kayla L.; Karpanty, Sarah M.; Spendelow, Jeffrey A.; Cohen, Jonathan B.; Althouse, Melissa A.; Parsons, Katharine C; Luttazi, Cristin F.; Catlin, Daniel H.; Gibson, Daniel

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Year Published: 2019

Restoring a forest icon: Could returning the American chestnut remodel our wildlife landscape?

Mother Nature was not making it easy. It was February 18, 2009, and winds were gusting, sleet was falling, and temperatures were hovering around 40° F. Our crew of 9 which consisted of personnel from the USDA Forest Service Southern Research Station, the Cherokee National Forest, and The University of Tennessee’s Tree Improvement Program, was...

Clark, Staci L; Schlarbaum, Scott E.; Clark, Joseph D.

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Year Published: 2019

Water velocity regulates macro-consumer herbivory on the benthic macrophyte Podostemum ceratophyllum Michx.

1) Macrophytes influence aquatic ecosystems by increasing habitat complexity and providing trophic resources for aquatic fauna. While herbivory on freshwater macrophytes is widely documented in lakes, low-velocity riverine habitats, the influence of herbivory on macrophytes in higher-velocity habitats has rarely been examined. 2) We...

Wood, James L; Skaggs, Jon W; Conn, Caitlin C; Freeman, Mary

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Year Published: 2019

Hydrologic balance, water quality, chemical-mass balance, and geochemical modeling of hyperalkaline ponds at Big Marsh, Chicago, Illinois, 2016–17

Hyperalkaline (pH greater than 12) ponds and groundwater exist at Big Marsh near Lake Calumet, Chicago, Illinois, a site used by the steel industry during the mid-1900s to deposit steel- and iron-making waste, in particular, slag. The hyperalkaline ponds may pose a hazard to human health and the environment. The U.S. Geological Survey (USGS), in...

Gahala, Amy M.; Seal, Robert R.; Piatak, Nadine M.
Gahala, A.M., Seal, R.R., and Piatak, N.M., 2019, Hydrologic balance, water quality, chemical-mass balance, and geochemical modeling of hyperalkaline ponds at Big Marsh, Chicago, Illinois, 2016–17: U.S. Geological Survey Scientific Investigations Report 2019–5078, 31 p., https://doi.org/10.3133/sir20195078.

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Year Published: 2019

Development and evaluation of a record extension technique for estimating discharge at selected stream sites in New Hampshire

Daily mean discharges are needed for rivers in New Hampshire for the management of instream flows. It is impractical, however, to continuously gage all streams in New Hampshire, and at many sites where information is needed, the discharge data required do not exist. For such sites, techniques for estimating discharge are available. The U.S....

Olson, Scott A.; Meyerhofer, Abraham J.
Olson, S.A., and Meyerhofer, A.J., 2019, Development and evaluation of a record extension technique for estimating discharge at selected stream sites in New Hampshire: U.S. Geological Survey Scientific Investigations Report 2019–5066, 23 p., https://doi.org/10.3133/sir20195066.

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Year Published: 2019

Urban stormwater: An overlooked pathway of extensive mixed contaminants to surface and groundwaters in the United States

Increasing global reliance on stormwater control measures to reduce discharge to surface water, increase groundwater recharge, and minimize contaminant delivery to receiving waterbodies necessitates improved understanding of stormwater-contaminant profiles. A multi-agency study of organic and inorganic chemicals in urban stormwater from 50 runoff...

Masoner, Jason R.; Kolpin, Dana W.; Cozzarelli, Isabelle M.; Barber, Larry B.; Burden, D.S.; Foreman, William T.; Forshay, Kenneth J.; Furlong, Edward; Groves, Justin F.; Hladik, Michelle; Hopton, Matthew E.; Jaeschke, Jeanne B.; Keefe, Steffanie H.; Krabbenhoft, David; Lowrance , Richard; Romanok, Kristin; Rus, David L.; Selbig, William R.; Williams, Brad; Bradley, Paul

Filter Total Items: 1,774
woman measuring circumference of tree with a tape measure in a forest
August 6, 2018

Tree Growth - soil acidified by acid rain

Peggy Phillips measures a young red maple in an Adirondack watershed to see if liming has improved tree growth in a watershed where acid rain severely acidified the soil.

Photograph of Woods Hole Coastal and Marine Science Center drone pilots on Sandy Neck, Beach, Cape Cod, MA
August 6, 2018

UAS pilots in the field

Woods Hole Coastal and Marine Science Center unmanned aerial systems (uas) pilots conduct drone flights at Sandy Neck Beach, Cape Cod, MA

Photograph of USGS personnel in front of an active volcano
July 31, 2018

Night Shift

Woods Hole Coastal and Marine Science Center's Aerial Imaging and Mapping Unmanned Aerial Systems (UAS) pilots, Emily Sturdivant (left) and Elizabeth Pendleton (right) working the night shift in Hawaii at the Kileaua volcano site.  

Graphite schist from the Roanoke Rapids terrane in southeastern Virginia.
July 31, 2018

Roanoke Rapids Graphite Schist, VA

Graphite schist from the Roanoke Rapids terrane in southeastern Virginia.  Economic deposits of this critical mineral may exist in this relatively unexplored region, which has not been adequately mapped at scales larger than 1:250,000. 

Staurolite weathering out of schist in the along the eastern edge of the Roanoke Rapids terrane in southeastern Virginia.
July 31, 2018

Staurolite Weathering out of Schist, Roanoke Rapids

Staurolite weathering out of schist along the eastern edge of the Roanoke Rapids terrane in southeastern Virginia.  Is this greenschist-facies schist part of the suprastructural Roanoke Rapids terrane, or part of a heretofore undefined higher-grade infrastructural terrane to the east? 

Image of an outcrop of quartzite within the Roanoke Rapids terrane near Coleman Lake.
July 31, 2018

Outcrop of Quartzite Within the Roanoke Rapids

An outcrop of quartzite within the Roanoke Rapids terrane near Coleman Lake.  Laser ablation inductively coupled plasma mass spectrometry U-Pb geochronology on detrital zircon grains within this unit (conducted by the USGS LA-ICPMS Lab in Denver) will provide critical and precise geochronologic age control as a geologic framework model is developed and compiled for the

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Image of an outcrop of blue quartz-bearing granite within the Roanoke Rapids terrane.
July 31, 2018

Outcrop of Blue Quartz-Bearing Granite, Roanoke Rapids

An outcrop of blue quartz-bearing granite within the Roanoke Rapids terrane.  Sensitive high-resolution ion microprobe U-Pb geochronology will precisely determine the age of this rock (conducted by the USGS-Stanford SHRIMP Lab in Menlo Park) and will provide critical geochronologic age control as a geologic framework model is developed and complied for the easternmost

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Photograph of Neil Ganju presenting at SSEAT
July 31, 2018

USGS teaches the teachers

Woods Hole Costal and Marine Science Center staff offered a presentation and handouts on Natural Hazards and Coastal Hazards in Wetlands and Estuaries  Smithsonian Science Education Academies for Teachers (SSEATs)

Photograph of Meagan Gonneea at SSEAT
July 31, 2018

USGS scientists teach the teachers

Woods Hole Costal and Marine Science Center staff offered a presentation and handouts on Natural Hazards and Coastal Hazards in Wetlands and Estuaries  at the Smithsonian Science Education Academies for Teachers (SSEATs)

man and woman near red USGS truck under blue canopy using groundwater sampling equipment
July 17, 2018

Groundwater Sampling in Nassau County, Long Island, New York

Groundwater Sampling in Nassau County, Long Island, New York

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